./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfe43dac9acec5d21450031b4b25696c02a17019cbc94a74a969e06371e0741b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:32:11,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:32:11,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:32:11,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:32:11,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:32:11,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:32:11,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:32:11,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:32:11,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:32:11,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:32:11,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:32:11,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:32:11,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:32:11,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:32:11,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:32:11,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:32:11,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:32:11,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:32:11,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:32:11,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:32:11,452 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:32:11,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:32:11,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:32:11,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:32:11,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:32:11,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:32:11,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:32:11,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:32:11,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:32:11,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:32:11,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:32:11,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:32:11,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:32:11,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:32:11,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:32:11,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:32:11,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:32:11,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:32:11,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:32:11,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:32:11,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:32:11,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:32:11,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:32:11,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:32:11,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:32:11,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:32:11,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:32:11,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:32:11,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:32:11,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:32:11,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:32:11,507 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:32:11,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:32:11,508 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:32:11,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:32:11,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:32:11,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:32:11,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:32:11,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:32:11,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:32:11,509 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:32:11,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:32:11,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:32:11,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:32:11,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:32:11,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:32:11,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:32:11,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:32:11,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:32:11,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:32:11,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:32:11,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:32:11,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:32:11,513 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:32:11,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:32:11,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:32:11,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe43dac9acec5d21450031b4b25696c02a17019cbc94a74a969e06371e0741b [2022-07-12 09:32:11,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:32:11,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:32:11,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:32:11,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:32:11,775 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:32:11,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2022-07-12 09:32:11,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a2eeabf/a3160c8182164957a55d1f68af6eddf0/FLAG83d85c69f [2022-07-12 09:32:12,283 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:32:12,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2022-07-12 09:32:12,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a2eeabf/a3160c8182164957a55d1f68af6eddf0/FLAG83d85c69f [2022-07-12 09:32:12,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12a2eeabf/a3160c8182164957a55d1f68af6eddf0 [2022-07-12 09:32:12,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:32:12,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:32:12,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:32:12,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:32:12,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:32:12,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:32:12" (1/1) ... [2022-07-12 09:32:12,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d32d005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:12, skipping insertion in model container [2022-07-12 09:32:12,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:32:12" (1/1) ... [2022-07-12 09:32:12,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:32:12,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:32:12,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[914,927] [2022-07-12 09:32:12,925 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[7115,7128] [2022-07-12 09:32:13,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:32:13,032 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:32:13,040 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[914,927] [2022-07-12 09:32:13,064 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c[7115,7128] [2022-07-12 09:32:13,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:32:13,158 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:32:13,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13 WrapperNode [2022-07-12 09:32:13,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:32:13,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:32:13,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:32:13,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:32:13,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (1/1) ... [2022-07-12 09:32:13,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (1/1) ... [2022-07-12 09:32:13,216 INFO L137 Inliner]: procedures = 69, calls = 82, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 813 [2022-07-12 09:32:13,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:32:13,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:32:13,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:32:13,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:32:13,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (1/1) ... [2022-07-12 09:32:13,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (1/1) ... [2022-07-12 09:32:13,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (1/1) ... [2022-07-12 09:32:13,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (1/1) ... [2022-07-12 09:32:13,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (1/1) ... [2022-07-12 09:32:13,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (1/1) ... [2022-07-12 09:32:13,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (1/1) ... [2022-07-12 09:32:13,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:32:13,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:32:13,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:32:13,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:32:13,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (1/1) ... [2022-07-12 09:32:13,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:32:13,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:13,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:32:13,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:32:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:32:13,379 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:32:13,380 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:32:13,380 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:32:13,383 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:32:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:32:13,383 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:32:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:32:13,384 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:32:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:32:13,384 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:32:13,384 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:32:13,384 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:32:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:32:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:32:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:32:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:32:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:32:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:32:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:32:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:32:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:32:13,385 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:32:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:32:13,385 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:32:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:32:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:32:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:32:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:32:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:32:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:32:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:32:13,386 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-12 09:32:13,386 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-12 09:32:13,482 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:32:13,484 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:32:14,214 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:32:14,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:32:14,225 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-12 09:32:14,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:32:14 BoogieIcfgContainer [2022-07-12 09:32:14,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:32:14,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:32:14,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:32:14,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:32:14,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:32:12" (1/3) ... [2022-07-12 09:32:14,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791102eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:32:14, skipping insertion in model container [2022-07-12 09:32:14,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:32:13" (2/3) ... [2022-07-12 09:32:14,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@791102eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:32:14, skipping insertion in model container [2022-07-12 09:32:14,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:32:14" (3/3) ... [2022-07-12 09:32:14,240 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2022-07-12 09:32:14,257 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:32:14,257 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:32:14,313 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:32:14,318 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@58f7fd76, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@54bffc53 [2022-07-12 09:32:14,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:32:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 335 states have (on average 1.626865671641791) internal successors, (545), 343 states have internal predecessors, (545), 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) [2022-07-12 09:32:14,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:14,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:14,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:14,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:14,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:14,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2101552932, now seen corresponding path program 1 times [2022-07-12 09:32:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:14,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013120758] [2022-07-12 09:32:14,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:14,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:14,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:14,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013120758] [2022-07-12 09:32:14,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013120758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:14,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:14,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:32:14,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519923799] [2022-07-12 09:32:14,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:14,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:32:14,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:14,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:32:14,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:14,720 INFO L87 Difference]: Start difference. First operand has 391 states, 335 states have (on average 1.626865671641791) internal successors, (545), 343 states have internal predecessors, (545), 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) [2022-07-12 09:32:15,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:15,729 INFO L93 Difference]: Finished difference Result 892 states and 1408 transitions. [2022-07-12 09:32:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:15,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:32:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:15,752 INFO L225 Difference]: With dead ends: 892 [2022-07-12 09:32:15,753 INFO L226 Difference]: Without dead ends: 515 [2022-07-12 09:32:15,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:32:15,768 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1227 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:15,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 1694 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:15,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-07-12 09:32:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 476. [2022-07-12 09:32:15,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 403 states have (on average 1.5086848635235732) internal successors, (608), 410 states have internal predecessors, (608), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2022-07-12 09:32:15,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 707 transitions. [2022-07-12 09:32:15,881 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 707 transitions. Word has length 65 [2022-07-12 09:32:15,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:15,881 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 707 transitions. [2022-07-12 09:32:15,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:32:15,882 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 707 transitions. [2022-07-12 09:32:15,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:15,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:15,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:15,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:32:15,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:15,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:15,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1789628413, now seen corresponding path program 1 times [2022-07-12 09:32:15,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:15,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342960405] [2022-07-12 09:32:15,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:15,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:15,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:16,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:16,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342960405] [2022-07-12 09:32:16,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342960405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:16,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:16,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:32:16,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648918241] [2022-07-12 09:32:16,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:16,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:32:16,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:16,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:32:16,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:16,044 INFO L87 Difference]: Start difference. First operand 476 states and 707 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:32:17,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:17,015 INFO L93 Difference]: Finished difference Result 823 states and 1184 transitions. [2022-07-12 09:32:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:32:17,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:32:17,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:17,022 INFO L225 Difference]: With dead ends: 823 [2022-07-12 09:32:17,022 INFO L226 Difference]: Without dead ends: 646 [2022-07-12 09:32:17,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:32:17,026 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1155 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:17,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 2201 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-07-12 09:32:17,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 572. [2022-07-12 09:32:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 479 states have (on average 1.4864300626304803) internal successors, (712), 488 states have internal predecessors, (712), 60 states have call successors, (60), 29 states have call predecessors, (60), 31 states have return successors, (69), 58 states have call predecessors, (69), 56 states have call successors, (69) [2022-07-12 09:32:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 841 transitions. [2022-07-12 09:32:17,090 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 841 transitions. Word has length 65 [2022-07-12 09:32:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:17,091 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 841 transitions. [2022-07-12 09:32:17,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:32:17,091 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 841 transitions. [2022-07-12 09:32:17,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:17,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:17,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:17,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:32:17,101 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:17,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:17,101 INFO L85 PathProgramCache]: Analyzing trace with hash 476752773, now seen corresponding path program 1 times [2022-07-12 09:32:17,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:17,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035128303] [2022-07-12 09:32:17,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:17,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:17,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:17,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:17,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:17,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:17,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035128303] [2022-07-12 09:32:17,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035128303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:17,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:17,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:32:17,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407070338] [2022-07-12 09:32:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:17,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:32:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:17,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:32:17,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:17,266 INFO L87 Difference]: Start difference. First operand 572 states and 841 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:32:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:18,196 INFO L93 Difference]: Finished difference Result 873 states and 1255 transitions. [2022-07-12 09:32:18,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:32:18,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-12 09:32:18,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:18,201 INFO L225 Difference]: With dead ends: 873 [2022-07-12 09:32:18,201 INFO L226 Difference]: Without dead ends: 606 [2022-07-12 09:32:18,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:18,203 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 731 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:18,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 2266 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-07-12 09:32:18,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 577. [2022-07-12 09:32:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 483 states have (on average 1.4782608695652173) internal successors, (714), 492 states have internal predecessors, (714), 60 states have call successors, (60), 29 states have call predecessors, (60), 32 states have return successors, (70), 59 states have call predecessors, (70), 56 states have call successors, (70) [2022-07-12 09:32:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 844 transitions. [2022-07-12 09:32:18,231 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 844 transitions. Word has length 65 [2022-07-12 09:32:18,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:18,232 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 844 transitions. [2022-07-12 09:32:18,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:32:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 844 transitions. [2022-07-12 09:32:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:18,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:18,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:18,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:32:18,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:18,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:18,235 INFO L85 PathProgramCache]: Analyzing trace with hash -552606525, now seen corresponding path program 1 times [2022-07-12 09:32:18,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:18,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231807672] [2022-07-12 09:32:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:18,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:18,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:18,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:18,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:18,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231807672] [2022-07-12 09:32:18,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231807672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:18,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:18,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:32:18,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24719382] [2022-07-12 09:32:18,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:18,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:32:18,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:18,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:32:18,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:18,350 INFO L87 Difference]: Start difference. First operand 577 states and 844 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:32:20,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:20,111 INFO L93 Difference]: Finished difference Result 2239 states and 3116 transitions. [2022-07-12 09:32:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:32:20,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-12 09:32:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:20,123 INFO L225 Difference]: With dead ends: 2239 [2022-07-12 09:32:20,124 INFO L226 Difference]: Without dead ends: 1967 [2022-07-12 09:32:20,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2022-07-12 09:32:20,134 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 2513 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:20,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 2140 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:32:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-07-12 09:32:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1717. [2022-07-12 09:32:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1383 states have (on average 1.3702096890817064) internal successors, (1895), 1412 states have internal predecessors, (1895), 177 states have call successors, (177), 131 states have call predecessors, (177), 155 states have return successors, (256), 177 states have call predecessors, (256), 173 states have call successors, (256) [2022-07-12 09:32:20,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2328 transitions. [2022-07-12 09:32:20,266 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2328 transitions. Word has length 65 [2022-07-12 09:32:20,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:20,267 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2328 transitions. [2022-07-12 09:32:20,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:32:20,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2328 transitions. [2022-07-12 09:32:20,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:20,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:20,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:20,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:32:20,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:20,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:20,270 INFO L85 PathProgramCache]: Analyzing trace with hash 498842564, now seen corresponding path program 1 times [2022-07-12 09:32:20,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:20,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288729606] [2022-07-12 09:32:20,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:20,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:20,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:20,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288729606] [2022-07-12 09:32:20,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288729606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:20,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:20,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:32:20,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97296397] [2022-07-12 09:32:20,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:20,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:32:20,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:20,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:32:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:20,385 INFO L87 Difference]: Start difference. First operand 1717 states and 2328 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:32:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:21,400 INFO L93 Difference]: Finished difference Result 3318 states and 4452 transitions. [2022-07-12 09:32:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:32:21,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-12 09:32:21,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:21,409 INFO L225 Difference]: With dead ends: 3318 [2022-07-12 09:32:21,409 INFO L226 Difference]: Without dead ends: 1906 [2022-07-12 09:32:21,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:32:21,416 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 490 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:21,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 2523 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2022-07-12 09:32:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1762. [2022-07-12 09:32:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1419 states have (on average 1.354474982381959) internal successors, (1922), 1448 states have internal predecessors, (1922), 177 states have call successors, (177), 131 states have call predecessors, (177), 164 states have return successors, (268), 186 states have call predecessors, (268), 173 states have call successors, (268) [2022-07-12 09:32:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2367 transitions. [2022-07-12 09:32:21,509 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2367 transitions. Word has length 65 [2022-07-12 09:32:21,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:21,509 INFO L495 AbstractCegarLoop]: Abstraction has 1762 states and 2367 transitions. [2022-07-12 09:32:21,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:32:21,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2367 transitions. [2022-07-12 09:32:21,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:21,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:21,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:21,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:32:21,512 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:21,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:21,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1885045958, now seen corresponding path program 1 times [2022-07-12 09:32:21,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:21,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039171037] [2022-07-12 09:32:21,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:21,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:21,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:21,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:21,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039171037] [2022-07-12 09:32:21,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039171037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:21,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:21,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:32:21,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678415735] [2022-07-12 09:32:21,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:21,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:32:21,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:21,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:32:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:21,624 INFO L87 Difference]: Start difference. First operand 1762 states and 2367 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:32:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:22,577 INFO L93 Difference]: Finished difference Result 3197 states and 4206 transitions. [2022-07-12 09:32:22,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:32:22,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:32:22,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:22,588 INFO L225 Difference]: With dead ends: 3197 [2022-07-12 09:32:22,588 INFO L226 Difference]: Without dead ends: 1960 [2022-07-12 09:32:22,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:32:22,593 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1131 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:22,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1935 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:32:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2022-07-12 09:32:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1740. [2022-07-12 09:32:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1405 states have (on average 1.3508896797153025) internal successors, (1898), 1428 states have internal predecessors, (1898), 177 states have call successors, (177), 131 states have call predecessors, (177), 156 states have return successors, (252), 184 states have call predecessors, (252), 173 states have call successors, (252) [2022-07-12 09:32:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2327 transitions. [2022-07-12 09:32:22,691 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2327 transitions. Word has length 65 [2022-07-12 09:32:22,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:22,691 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2327 transitions. [2022-07-12 09:32:22,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:32:22,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2327 transitions. [2022-07-12 09:32:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:32:22,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:22,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:22,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:32:22,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:22,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1751032452, now seen corresponding path program 1 times [2022-07-12 09:32:22,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:22,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633356657] [2022-07-12 09:32:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:22,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:22,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:22,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:22,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633356657] [2022-07-12 09:32:22,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633356657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:22,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:22,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:22,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115134802] [2022-07-12 09:32:22,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:22,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:22,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:22,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:22,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:22,783 INFO L87 Difference]: Start difference. First operand 1740 states and 2327 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:32:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:23,248 INFO L93 Difference]: Finished difference Result 4815 states and 6306 transitions. [2022-07-12 09:32:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:32:23,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:32:23,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:23,263 INFO L225 Difference]: With dead ends: 4815 [2022-07-12 09:32:23,264 INFO L226 Difference]: Without dead ends: 3383 [2022-07-12 09:32:23,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:32:23,269 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1650 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:23,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 1121 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:32:23,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2022-07-12 09:32:23,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3111. [2022-07-12 09:32:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2471 states have (on average 1.301092675030352) internal successors, (3215), 2515 states have internal predecessors, (3215), 329 states have call successors, (329), 254 states have call predecessors, (329), 309 states have return successors, (524), 348 states have call predecessors, (524), 325 states have call successors, (524) [2022-07-12 09:32:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4068 transitions. [2022-07-12 09:32:23,410 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4068 transitions. Word has length 65 [2022-07-12 09:32:23,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:23,410 INFO L495 AbstractCegarLoop]: Abstraction has 3111 states and 4068 transitions. [2022-07-12 09:32:23,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:32:23,411 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4068 transitions. [2022-07-12 09:32:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:32:23,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:23,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:23,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:32:23,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:23,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash -869770994, now seen corresponding path program 1 times [2022-07-12 09:32:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:23,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095887364] [2022-07-12 09:32:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:23,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095887364] [2022-07-12 09:32:23,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095887364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:23,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:23,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:23,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614426983] [2022-07-12 09:32:23,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:23,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:23,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:23,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:23,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:23,494 INFO L87 Difference]: Start difference. First operand 3111 states and 4068 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:32:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:24,126 INFO L93 Difference]: Finished difference Result 8129 states and 10582 transitions. [2022-07-12 09:32:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:32:24,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-12 09:32:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:24,152 INFO L225 Difference]: With dead ends: 8129 [2022-07-12 09:32:24,152 INFO L226 Difference]: Without dead ends: 5305 [2022-07-12 09:32:24,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:32:24,164 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 934 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:24,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1377 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:32:24,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5305 states. [2022-07-12 09:32:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5305 to 4789. [2022-07-12 09:32:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 3756 states have (on average 1.2819488817891374) internal successors, (4815), 3807 states have internal predecessors, (4815), 523 states have call successors, (523), 428 states have call predecessors, (523), 508 states have return successors, (845), 560 states have call predecessors, (845), 519 states have call successors, (845) [2022-07-12 09:32:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 6183 transitions. [2022-07-12 09:32:24,433 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 6183 transitions. Word has length 66 [2022-07-12 09:32:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:24,434 INFO L495 AbstractCegarLoop]: Abstraction has 4789 states and 6183 transitions. [2022-07-12 09:32:24,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:32:24,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 6183 transitions. [2022-07-12 09:32:24,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 09:32:24,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:24,438 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:24,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:32:24,438 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:24,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash -79299166, now seen corresponding path program 1 times [2022-07-12 09:32:24,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:24,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428790158] [2022-07-12 09:32:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:24,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:24,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:24,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428790158] [2022-07-12 09:32:24,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428790158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:24,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:24,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:24,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542003272] [2022-07-12 09:32:24,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:24,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:24,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:24,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:24,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:24,525 INFO L87 Difference]: Start difference. First operand 4789 states and 6183 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:32:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:25,110 INFO L93 Difference]: Finished difference Result 6419 states and 8185 transitions. [2022-07-12 09:32:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:32:25,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-12 09:32:25,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:25,137 INFO L225 Difference]: With dead ends: 6419 [2022-07-12 09:32:25,137 INFO L226 Difference]: Without dead ends: 6416 [2022-07-12 09:32:25,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:32:25,141 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1639 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:25,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 1404 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:32:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6416 states. [2022-07-12 09:32:25,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6416 to 5843. [2022-07-12 09:32:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5843 states, 4559 states have (on average 1.2689186225049354) internal successors, (5785), 4619 states have internal predecessors, (5785), 649 states have call successors, (649), 542 states have call predecessors, (649), 633 states have return successors, (1038), 688 states have call predecessors, (1038), 646 states have call successors, (1038) [2022-07-12 09:32:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 7472 transitions. [2022-07-12 09:32:25,464 INFO L78 Accepts]: Start accepts. Automaton has 5843 states and 7472 transitions. Word has length 73 [2022-07-12 09:32:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:25,465 INFO L495 AbstractCegarLoop]: Abstraction has 5843 states and 7472 transitions. [2022-07-12 09:32:25,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:32:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5843 states and 7472 transitions. [2022-07-12 09:32:25,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 09:32:25,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:25,469 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:25,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:32:25,469 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:25,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:25,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1835525111, now seen corresponding path program 1 times [2022-07-12 09:32:25,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:25,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885818884] [2022-07-12 09:32:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:25,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:25,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:25,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885818884] [2022-07-12 09:32:25,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885818884] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:32:25,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514935317] [2022-07-12 09:32:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:25,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:32:25,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:25,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:32:25,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:32:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:25,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:32:25,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:32:26,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:26,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:32:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:26,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514935317] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:32:26,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:32:26,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-12 09:32:26,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176712148] [2022-07-12 09:32:26,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:32:26,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:32:26,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:32:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:32:26,193 INFO L87 Difference]: Start difference. First operand 5843 states and 7472 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 09:32:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:28,303 INFO L93 Difference]: Finished difference Result 13489 states and 17000 transitions. [2022-07-12 09:32:28,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-12 09:32:28,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-12 09:32:28,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:28,357 INFO L225 Difference]: With dead ends: 13489 [2022-07-12 09:32:28,358 INFO L226 Difference]: Without dead ends: 13486 [2022-07-12 09:32:28,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-12 09:32:28,364 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 1523 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:28,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 2742 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:32:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13486 states. [2022-07-12 09:32:29,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 11101. [2022-07-12 09:32:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11101 states, 8651 states have (on average 1.2592763842330366) internal successors, (10894), 8763 states have internal predecessors, (10894), 1215 states have call successors, (1215), 1032 states have call predecessors, (1215), 1233 states have return successors, (1977), 1312 states have call predecessors, (1977), 1212 states have call successors, (1977) [2022-07-12 09:32:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 14086 transitions. [2022-07-12 09:32:29,057 INFO L78 Accepts]: Start accepts. Automaton has 11101 states and 14086 transitions. Word has length 74 [2022-07-12 09:32:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:29,057 INFO L495 AbstractCegarLoop]: Abstraction has 11101 states and 14086 transitions. [2022-07-12 09:32:29,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 09:32:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 11101 states and 14086 transitions. [2022-07-12 09:32:29,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 09:32:29,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:29,060 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:29,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:32:29,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 09:32:29,275 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:29,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:29,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1541776738, now seen corresponding path program 2 times [2022-07-12 09:32:29,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:29,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791489850] [2022-07-12 09:32:29,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:29,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:29,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:29,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791489850] [2022-07-12 09:32:29,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791489850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:29,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:29,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:29,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194473481] [2022-07-12 09:32:29,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:29,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:29,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:29,337 INFO L87 Difference]: Start difference. First operand 11101 states and 14086 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:32:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:30,004 INFO L93 Difference]: Finished difference Result 17644 states and 22428 transitions. [2022-07-12 09:32:30,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:32:30,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-12 09:32:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:30,037 INFO L225 Difference]: With dead ends: 17644 [2022-07-12 09:32:30,037 INFO L226 Difference]: Without dead ends: 7706 [2022-07-12 09:32:30,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:32:30,064 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1000 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:30,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1509 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:32:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2022-07-12 09:32:30,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 7154. [2022-07-12 09:32:30,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7154 states, 5598 states have (on average 1.2386566630939622) internal successors, (6934), 5666 states have internal predecessors, (6934), 782 states have call successors, (782), 656 states have call predecessors, (782), 772 states have return successors, (1196), 838 states have call predecessors, (1196), 779 states have call successors, (1196) [2022-07-12 09:32:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7154 states to 7154 states and 8912 transitions. [2022-07-12 09:32:30,489 INFO L78 Accepts]: Start accepts. Automaton has 7154 states and 8912 transitions. Word has length 77 [2022-07-12 09:32:30,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:30,489 INFO L495 AbstractCegarLoop]: Abstraction has 7154 states and 8912 transitions. [2022-07-12 09:32:30,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:32:30,490 INFO L276 IsEmpty]: Start isEmpty. Operand 7154 states and 8912 transitions. [2022-07-12 09:32:30,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:32:30,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:30,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:30,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:32:30,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:30,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:30,494 INFO L85 PathProgramCache]: Analyzing trace with hash 68149481, now seen corresponding path program 1 times [2022-07-12 09:32:30,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:30,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464464072] [2022-07-12 09:32:30,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:30,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:32:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:32:30,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:30,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464464072] [2022-07-12 09:32:30,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464464072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:30,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:30,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:32:30,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692150719] [2022-07-12 09:32:30,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:30,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:32:30,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:30,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:32:30,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:30,570 INFO L87 Difference]: Start difference. First operand 7154 states and 8912 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:32:32,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:32,004 INFO L93 Difference]: Finished difference Result 21028 states and 26129 transitions. [2022-07-12 09:32:32,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 09:32:32,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-12 09:32:32,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:32,059 INFO L225 Difference]: With dead ends: 21028 [2022-07-12 09:32:32,059 INFO L226 Difference]: Without dead ends: 14185 [2022-07-12 09:32:32,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-12 09:32:32,081 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1475 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:32,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1794 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:32,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14185 states. [2022-07-12 09:32:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14185 to 13326. [2022-07-12 09:32:32,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13326 states, 10274 states have (on average 1.208974109402375) internal successors, (12421), 10448 states have internal predecessors, (12421), 1498 states have call successors, (1498), 1260 states have call predecessors, (1498), 1552 states have return successors, (2599), 1630 states have call predecessors, (2599), 1495 states have call successors, (2599) [2022-07-12 09:32:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13326 states to 13326 states and 16518 transitions. [2022-07-12 09:32:32,883 INFO L78 Accepts]: Start accepts. Automaton has 13326 states and 16518 transitions. Word has length 84 [2022-07-12 09:32:32,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:32,883 INFO L495 AbstractCegarLoop]: Abstraction has 13326 states and 16518 transitions. [2022-07-12 09:32:32,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:32:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 13326 states and 16518 transitions. [2022-07-12 09:32:32,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 09:32:32,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:32,890 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:32,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:32:32,890 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:32,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1418215744, now seen corresponding path program 1 times [2022-07-12 09:32:32,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:32,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755913711] [2022-07-12 09:32:32,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:32,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:32,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:32:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 09:32:32,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:32,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755913711] [2022-07-12 09:32:32,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755913711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:32,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:32,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:32:32,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171479007] [2022-07-12 09:32:32,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:32,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:32:32,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:32,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:32:32,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:32,968 INFO L87 Difference]: Start difference. First operand 13326 states and 16518 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:32:34,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:34,445 INFO L93 Difference]: Finished difference Result 24200 states and 29837 transitions. [2022-07-12 09:32:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 09:32:34,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-12 09:32:34,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:34,485 INFO L225 Difference]: With dead ends: 24200 [2022-07-12 09:32:34,485 INFO L226 Difference]: Without dead ends: 11801 [2022-07-12 09:32:34,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-12 09:32:34,513 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 2042 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:34,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 2099 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:32:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11801 states. [2022-07-12 09:32:34,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11801 to 10901. [2022-07-12 09:32:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10901 states, 8440 states have (on average 1.2004739336492891) internal successors, (10132), 8581 states have internal predecessors, (10132), 1199 states have call successors, (1199), 1009 states have call predecessors, (1199), 1260 states have return successors, (1931), 1320 states have call predecessors, (1931), 1196 states have call successors, (1931) [2022-07-12 09:32:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10901 states to 10901 states and 13262 transitions. [2022-07-12 09:32:35,034 INFO L78 Accepts]: Start accepts. Automaton has 10901 states and 13262 transitions. Word has length 93 [2022-07-12 09:32:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:35,034 INFO L495 AbstractCegarLoop]: Abstraction has 10901 states and 13262 transitions. [2022-07-12 09:32:35,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:32:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 10901 states and 13262 transitions. [2022-07-12 09:32:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 09:32:35,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:35,047 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:35,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:32:35,047 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:35,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1086528831, now seen corresponding path program 1 times [2022-07-12 09:32:35,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:35,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389838126] [2022-07-12 09:32:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:35,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:32:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:32:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:32:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:32:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 09:32:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 09:32:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 09:32:35,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:35,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389838126] [2022-07-12 09:32:35,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389838126] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:32:35,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130019261] [2022-07-12 09:32:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:35,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:32:35,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:32:35,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:32:35,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:32:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:35,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 09:32:35,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:32:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:32:35,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:32:35,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130019261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:35,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:32:35,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-12 09:32:35,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30904331] [2022-07-12 09:32:35,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:35,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:35,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:35,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:35,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:32:35,371 INFO L87 Difference]: Start difference. First operand 10901 states and 13262 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:32:35,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:35,626 INFO L93 Difference]: Finished difference Result 16049 states and 19482 transitions. [2022-07-12 09:32:35,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:35,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-12 09:32:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:35,643 INFO L225 Difference]: With dead ends: 16049 [2022-07-12 09:32:35,643 INFO L226 Difference]: Without dead ends: 5467 [2022-07-12 09:32:35,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:32:35,665 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 34 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:35,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2825 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:32:35,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5467 states. [2022-07-12 09:32:35,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5467 to 5025. [2022-07-12 09:32:35,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 4005 states have (on average 1.1980024968789014) internal successors, (4798), 4044 states have internal predecessors, (4798), 501 states have call successors, (501), 403 states have call predecessors, (501), 517 states have return successors, (771), 578 states have call predecessors, (771), 498 states have call successors, (771) [2022-07-12 09:32:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 6070 transitions. [2022-07-12 09:32:35,896 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 6070 transitions. Word has length 145 [2022-07-12 09:32:35,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:35,896 INFO L495 AbstractCegarLoop]: Abstraction has 5025 states and 6070 transitions. [2022-07-12 09:32:35,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:32:35,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 6070 transitions. [2022-07-12 09:32:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:32:35,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:35,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:35,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:32:36,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 09:32:36,120 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1051309190, now seen corresponding path program 1 times [2022-07-12 09:32:36,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:36,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017685398] [2022-07-12 09:32:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:36,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:36,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:32:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:32:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:36,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:36,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017685398] [2022-07-12 09:32:36,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017685398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:36,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:36,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:32:36,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453659459] [2022-07-12 09:32:36,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:36,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:32:36,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:36,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:32:36,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:32:36,227 INFO L87 Difference]: Start difference. First operand 5025 states and 6070 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:37,575 INFO L93 Difference]: Finished difference Result 5396 states and 6664 transitions. [2022-07-12 09:32:37,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:37,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 135 [2022-07-12 09:32:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:37,591 INFO L225 Difference]: With dead ends: 5396 [2022-07-12 09:32:37,591 INFO L226 Difference]: Without dead ends: 5123 [2022-07-12 09:32:37,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:37,596 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 841 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:37,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1088 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2022-07-12 09:32:37,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 5025. [2022-07-12 09:32:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 4005 states have (on average 1.1977528089887641) internal successors, (4797), 4044 states have internal predecessors, (4797), 501 states have call successors, (501), 403 states have call predecessors, (501), 517 states have return successors, (771), 578 states have call predecessors, (771), 498 states have call successors, (771) [2022-07-12 09:32:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 6069 transitions. [2022-07-12 09:32:38,003 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 6069 transitions. Word has length 135 [2022-07-12 09:32:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:38,006 INFO L495 AbstractCegarLoop]: Abstraction has 5025 states and 6069 transitions. [2022-07-12 09:32:38,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 6069 transitions. [2022-07-12 09:32:38,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:32:38,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:38,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:32:38,016 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash 999099708, now seen corresponding path program 1 times [2022-07-12 09:32:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:38,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297310869] [2022-07-12 09:32:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:38,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:38,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:38,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:32:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:38,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:38,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:32:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:38,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:38,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297310869] [2022-07-12 09:32:38,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297310869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:38,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:38,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:38,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770661306] [2022-07-12 09:32:38,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:38,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:38,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:38,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:38,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:38,129 INFO L87 Difference]: Start difference. First operand 5025 states and 6069 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:40,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:40,322 INFO L93 Difference]: Finished difference Result 5767 states and 7260 transitions. [2022-07-12 09:32:40,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:32:40,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 135 [2022-07-12 09:32:40,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:40,333 INFO L225 Difference]: With dead ends: 5767 [2022-07-12 09:32:40,334 INFO L226 Difference]: Without dead ends: 5499 [2022-07-12 09:32:40,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:32:40,335 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 1326 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:40,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 1530 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 09:32:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2022-07-12 09:32:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5302. [2022-07-12 09:32:40,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 4258 states have (on average 1.2209957726632221) internal successors, (5199), 4298 states have internal predecessors, (5199), 518 states have call successors, (518), 409 states have call predecessors, (518), 524 states have return successors, (791), 595 states have call predecessors, (791), 515 states have call successors, (791) [2022-07-12 09:32:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 6508 transitions. [2022-07-12 09:32:40,663 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 6508 transitions. Word has length 135 [2022-07-12 09:32:40,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:40,663 INFO L495 AbstractCegarLoop]: Abstraction has 5302 states and 6508 transitions. [2022-07-12 09:32:40,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 6508 transitions. [2022-07-12 09:32:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:32:40,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:40,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:40,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:32:40,673 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:40,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:40,673 INFO L85 PathProgramCache]: Analyzing trace with hash -362902728, now seen corresponding path program 1 times [2022-07-12 09:32:40,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:40,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787590546] [2022-07-12 09:32:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:40,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:40,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:40,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:32:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:40,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:40,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:32:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:40,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:40,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787590546] [2022-07-12 09:32:40,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787590546] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:40,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:40,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:40,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039634133] [2022-07-12 09:32:40,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:40,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:40,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:40,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:40,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:40,783 INFO L87 Difference]: Start difference. First operand 5302 states and 6508 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:43,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:43,166 INFO L93 Difference]: Finished difference Result 6430 states and 8318 transitions. [2022-07-12 09:32:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:43,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:32:43,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:43,183 INFO L225 Difference]: With dead ends: 6430 [2022-07-12 09:32:43,184 INFO L226 Difference]: Without dead ends: 5885 [2022-07-12 09:32:43,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:43,188 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 1337 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:43,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 2522 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 09:32:43,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2022-07-12 09:32:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 5560. [2022-07-12 09:32:43,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 4492 states have (on average 1.2384238646482635) internal successors, (5563), 4533 states have internal predecessors, (5563), 535 states have call successors, (535), 415 states have call predecessors, (535), 531 states have return successors, (810), 613 states have call predecessors, (810), 532 states have call successors, (810) [2022-07-12 09:32:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 6908 transitions. [2022-07-12 09:32:43,623 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 6908 transitions. Word has length 135 [2022-07-12 09:32:43,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:43,624 INFO L495 AbstractCegarLoop]: Abstraction has 5560 states and 6908 transitions. [2022-07-12 09:32:43,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:43,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 6908 transitions. [2022-07-12 09:32:43,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:32:43,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:43,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:43,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:32:43,632 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:43,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:43,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1566029498, now seen corresponding path program 1 times [2022-07-12 09:32:43,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:43,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441569347] [2022-07-12 09:32:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:43,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:43,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:32:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:43,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:32:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:43,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:43,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441569347] [2022-07-12 09:32:43,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441569347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:43,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:43,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:43,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914365356] [2022-07-12 09:32:43,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:43,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:43,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:43,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:43,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:43,756 INFO L87 Difference]: Start difference. First operand 5560 states and 6908 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:45,928 INFO L93 Difference]: Finished difference Result 7407 states and 9866 transitions. [2022-07-12 09:32:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:45,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:32:45,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:45,950 INFO L225 Difference]: With dead ends: 7407 [2022-07-12 09:32:45,951 INFO L226 Difference]: Without dead ends: 6604 [2022-07-12 09:32:45,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:45,961 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 1337 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:45,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 2512 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 09:32:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2022-07-12 09:32:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 6077. [2022-07-12 09:32:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6077 states, 4961 states have (on average 1.2682926829268293) internal successors, (6292), 5004 states have internal predecessors, (6292), 569 states have call successors, (569), 427 states have call predecessors, (569), 545 states have return successors, (852), 649 states have call predecessors, (852), 566 states have call successors, (852) [2022-07-12 09:32:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 7713 transitions. [2022-07-12 09:32:46,444 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 7713 transitions. Word has length 135 [2022-07-12 09:32:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:46,444 INFO L495 AbstractCegarLoop]: Abstraction has 6077 states and 7713 transitions. [2022-07-12 09:32:46,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 7713 transitions. [2022-07-12 09:32:46,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:32:46,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:46,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:46,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:32:46,454 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:46,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:46,454 INFO L85 PathProgramCache]: Analyzing trace with hash -727051528, now seen corresponding path program 1 times [2022-07-12 09:32:46,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:46,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102108826] [2022-07-12 09:32:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:46,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:32:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:46,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:32:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:46,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:46,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102108826] [2022-07-12 09:32:46,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102108826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:46,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:46,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:46,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929331416] [2022-07-12 09:32:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:46,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:46,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:46,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:46,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:46,589 INFO L87 Difference]: Start difference. First operand 6077 states and 7713 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:48,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:48,832 INFO L93 Difference]: Finished difference Result 9285 states and 12827 transitions. [2022-07-12 09:32:48,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:48,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:32:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:48,860 INFO L225 Difference]: With dead ends: 9285 [2022-07-12 09:32:48,860 INFO L226 Difference]: Without dead ends: 7965 [2022-07-12 09:32:48,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:48,867 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 1332 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:48,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 2504 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 09:32:48,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2022-07-12 09:32:49,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7117. [2022-07-12 09:32:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 5905 states have (on average 1.3141405588484336) internal successors, (7760), 5952 states have internal predecessors, (7760), 637 states have call successors, (637), 451 states have call predecessors, (637), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-12 09:32:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9339 transitions. [2022-07-12 09:32:49,475 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9339 transitions. Word has length 135 [2022-07-12 09:32:49,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:49,475 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 9339 transitions. [2022-07-12 09:32:49,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9339 transitions. [2022-07-12 09:32:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:32:49,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:49,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:49,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:32:49,488 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:49,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:49,488 INFO L85 PathProgramCache]: Analyzing trace with hash -255695178, now seen corresponding path program 1 times [2022-07-12 09:32:49,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:49,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224454319] [2022-07-12 09:32:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:49,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:49,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:49,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:32:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:49,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:49,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:32:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:49,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:49,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224454319] [2022-07-12 09:32:49,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224454319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:49,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:49,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955303621] [2022-07-12 09:32:49,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:49,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:49,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:49,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:49,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:49,583 INFO L87 Difference]: Start difference. First operand 7117 states and 9339 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:50,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:50,982 INFO L93 Difference]: Finished difference Result 10338 states and 14504 transitions. [2022-07-12 09:32:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:50,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:32:50,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:51,001 INFO L225 Difference]: With dead ends: 10338 [2022-07-12 09:32:51,001 INFO L226 Difference]: Without dead ends: 7978 [2022-07-12 09:32:51,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:32:51,009 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1194 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:51,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1298 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2022-07-12 09:32:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 7117. [2022-07-12 09:32:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 5905 states have (on average 1.3126164267569855) internal successors, (7751), 5952 states have internal predecessors, (7751), 637 states have call successors, (637), 451 states have call predecessors, (637), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-12 09:32:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9330 transitions. [2022-07-12 09:32:51,509 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9330 transitions. Word has length 135 [2022-07-12 09:32:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:51,509 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 9330 transitions. [2022-07-12 09:32:51,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9330 transitions. [2022-07-12 09:32:51,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:32:51,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:51,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:51,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:32:51,520 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:51,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:51,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1903058120, now seen corresponding path program 1 times [2022-07-12 09:32:51,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:51,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883708269] [2022-07-12 09:32:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:51,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:51,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:32:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:32:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:51,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:51,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883708269] [2022-07-12 09:32:51,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883708269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:51,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:51,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:51,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519744515] [2022-07-12 09:32:51,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:51,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:51,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:51,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:51,636 INFO L87 Difference]: Start difference. First operand 7117 states and 9330 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:52,903 INFO L93 Difference]: Finished difference Result 10328 states and 14457 transitions. [2022-07-12 09:32:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:52,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:32:52,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:52,920 INFO L225 Difference]: With dead ends: 10328 [2022-07-12 09:32:52,920 INFO L226 Difference]: Without dead ends: 7968 [2022-07-12 09:32:52,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:32:52,926 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1192 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:52,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 1294 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2022-07-12 09:32:53,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7117. [2022-07-12 09:32:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 5905 states have (on average 1.3110922946655377) internal successors, (7742), 5952 states have internal predecessors, (7742), 637 states have call successors, (637), 451 states have call predecessors, (637), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-12 09:32:53,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9321 transitions. [2022-07-12 09:32:53,454 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9321 transitions. Word has length 135 [2022-07-12 09:32:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:53,454 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 9321 transitions. [2022-07-12 09:32:53,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:53,455 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9321 transitions. [2022-07-12 09:32:53,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:32:53,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:53,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:53,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:32:53,464 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:53,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 260558454, now seen corresponding path program 1 times [2022-07-12 09:32:53,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:53,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456355512] [2022-07-12 09:32:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:53,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:53,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:32:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:53,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:53,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:32:53,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:53,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:53,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:53,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456355512] [2022-07-12 09:32:53,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456355512] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:53,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:53,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:53,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780763759] [2022-07-12 09:32:53,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:53,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:53,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:53,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:53,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:53,565 INFO L87 Difference]: Start difference. First operand 7117 states and 9321 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:54,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:54,830 INFO L93 Difference]: Finished difference Result 10318 states and 14410 transitions. [2022-07-12 09:32:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:54,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:32:54,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:54,844 INFO L225 Difference]: With dead ends: 10318 [2022-07-12 09:32:54,844 INFO L226 Difference]: Without dead ends: 7958 [2022-07-12 09:32:54,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:32:54,850 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1232 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:54,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1268 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:32:54,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7958 states. [2022-07-12 09:32:55,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7958 to 7117. [2022-07-12 09:32:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 5905 states have (on average 1.3095681625740898) internal successors, (7733), 5952 states have internal predecessors, (7733), 637 states have call successors, (637), 451 states have call predecessors, (637), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-12 09:32:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9312 transitions. [2022-07-12 09:32:55,266 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9312 transitions. Word has length 135 [2022-07-12 09:32:55,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:55,267 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 9312 transitions. [2022-07-12 09:32:55,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:55,267 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9312 transitions. [2022-07-12 09:32:55,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:32:55,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:55,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:32:55,275 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash -778026120, now seen corresponding path program 1 times [2022-07-12 09:32:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:55,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424821983] [2022-07-12 09:32:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:32:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:32:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:55,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:55,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424821983] [2022-07-12 09:32:55,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424821983] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:55,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:55,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:55,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529836210] [2022-07-12 09:32:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:55,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:55,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:55,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:55,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:55,375 INFO L87 Difference]: Start difference. First operand 7117 states and 9312 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:57,854 INFO L93 Difference]: Finished difference Result 13021 states and 18591 transitions. [2022-07-12 09:32:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:57,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:32:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:57,879 INFO L225 Difference]: With dead ends: 13021 [2022-07-12 09:32:57,879 INFO L226 Difference]: Without dead ends: 10661 [2022-07-12 09:32:57,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:57,886 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1310 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:57,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 2481 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 09:32:57,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10661 states. [2022-07-12 09:32:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10661 to 9229. [2022-07-12 09:32:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9229 states, 7825 states have (on average 1.3649840255591055) internal successors, (10681), 7880 states have internal predecessors, (10681), 773 states have call successors, (773), 499 states have call predecessors, (773), 629 states have return successors, (1140), 865 states have call predecessors, (1140), 770 states have call successors, (1140) [2022-07-12 09:32:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9229 states to 9229 states and 12594 transitions. [2022-07-12 09:32:58,523 INFO L78 Accepts]: Start accepts. Automaton has 9229 states and 12594 transitions. Word has length 135 [2022-07-12 09:32:58,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:58,523 INFO L495 AbstractCegarLoop]: Abstraction has 9229 states and 12594 transitions. [2022-07-12 09:32:58,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 9229 states and 12594 transitions. [2022-07-12 09:32:58,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:32:58,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:58,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:58,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:32:58,533 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1543775798, now seen corresponding path program 1 times [2022-07-12 09:32:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:58,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679607831] [2022-07-12 09:32:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:58,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:32:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:32:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:32:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:58,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:58,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679607831] [2022-07-12 09:32:58,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679607831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:58,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:58,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:58,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829727846] [2022-07-12 09:32:58,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:58,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:58,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:58,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:58,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:58,623 INFO L87 Difference]: Start difference. First operand 9229 states and 12594 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:02,013 INFO L93 Difference]: Finished difference Result 22491 states and 33369 transitions. [2022-07-12 09:33:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:33:02,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:33:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:02,064 INFO L225 Difference]: With dead ends: 22491 [2022-07-12 09:33:02,064 INFO L226 Difference]: Without dead ends: 18019 [2022-07-12 09:33:02,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:02,083 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 1392 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 2716 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:02,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 2602 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2716 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 09:33:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18019 states. [2022-07-12 09:33:02,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18019 to 13414. [2022-07-12 09:33:02,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13414 states, 11642 states have (on average 1.4220065280879575) internal successors, (16555), 11713 states have internal predecessors, (16555), 1029 states have call successors, (1029), 595 states have call predecessors, (1029), 741 states have return successors, (1574), 1137 states have call predecessors, (1574), 1026 states have call successors, (1574) [2022-07-12 09:33:03,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13414 states to 13414 states and 19158 transitions. [2022-07-12 09:33:03,018 INFO L78 Accepts]: Start accepts. Automaton has 13414 states and 19158 transitions. Word has length 135 [2022-07-12 09:33:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:03,019 INFO L495 AbstractCegarLoop]: Abstraction has 13414 states and 19158 transitions. [2022-07-12 09:33:03,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 13414 states and 19158 transitions. [2022-07-12 09:33:03,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:33:03,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:03,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:03,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:33:03,031 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:03,031 INFO L85 PathProgramCache]: Analyzing trace with hash -598084680, now seen corresponding path program 1 times [2022-07-12 09:33:03,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:03,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963491161] [2022-07-12 09:33:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:03,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:33:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:33:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:33:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:03,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:03,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963491161] [2022-07-12 09:33:03,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963491161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:03,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:03,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:03,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325023575] [2022-07-12 09:33:03,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:03,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:03,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:03,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:03,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:03,127 INFO L87 Difference]: Start difference. First operand 13414 states and 19158 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:07,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:07,496 INFO L93 Difference]: Finished difference Result 38962 states and 59359 transitions. [2022-07-12 09:33:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:33:07,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:33:07,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:07,569 INFO L225 Difference]: With dead ends: 38962 [2022-07-12 09:33:07,569 INFO L226 Difference]: Without dead ends: 30305 [2022-07-12 09:33:07,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:07,594 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 1601 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:07,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 2455 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 09:33:07,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30305 states. [2022-07-12 09:33:08,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30305 to 21447. [2022-07-12 09:33:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21447 states, 18955 states have (on average 1.4635188604589817) internal successors, (27741), 19058 states have internal predecessors, (27741), 1525 states have call successors, (1525), 787 states have call predecessors, (1525), 965 states have return successors, (2588), 1665 states have call predecessors, (2588), 1522 states have call successors, (2588) [2022-07-12 09:33:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21447 states to 21447 states and 31854 transitions. [2022-07-12 09:33:09,050 INFO L78 Accepts]: Start accepts. Automaton has 21447 states and 31854 transitions. Word has length 135 [2022-07-12 09:33:09,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:09,050 INFO L495 AbstractCegarLoop]: Abstraction has 21447 states and 31854 transitions. [2022-07-12 09:33:09,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 21447 states and 31854 transitions. [2022-07-12 09:33:09,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:33:09,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:09,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:09,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:33:09,066 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:09,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:09,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1221366282, now seen corresponding path program 1 times [2022-07-12 09:33:09,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:09,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684803349] [2022-07-12 09:33:09,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:09,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:33:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:33:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:33:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:09,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684803349] [2022-07-12 09:33:09,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684803349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:09,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:09,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:09,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268094116] [2022-07-12 09:33:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:09,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:09,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:09,155 INFO L87 Difference]: Start difference. First operand 21447 states and 31854 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:15,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:15,568 INFO L93 Difference]: Finished difference Result 69391 states and 107873 transitions. [2022-07-12 09:33:15,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:33:15,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:33:15,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:15,731 INFO L225 Difference]: With dead ends: 69391 [2022-07-12 09:33:15,731 INFO L226 Difference]: Without dead ends: 52701 [2022-07-12 09:33:15,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:15,776 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1519 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:15,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 2450 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 09:33:15,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52701 states. [2022-07-12 09:33:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52701 to 37865. [2022-07-12 09:33:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37865 states, 33965 states have (on average 1.497099955836891) internal successors, (50849), 34132 states have internal predecessors, (50849), 2485 states have call successors, (2485), 1171 states have call predecessors, (2485), 1413 states have return successors, (5070), 2689 states have call predecessors, (5070), 2482 states have call successors, (5070) [2022-07-12 09:33:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37865 states to 37865 states and 58404 transitions. [2022-07-12 09:33:18,623 INFO L78 Accepts]: Start accepts. Automaton has 37865 states and 58404 transitions. Word has length 135 [2022-07-12 09:33:18,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:18,624 INFO L495 AbstractCegarLoop]: Abstraction has 37865 states and 58404 transitions. [2022-07-12 09:33:18,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 37865 states and 58404 transitions. [2022-07-12 09:33:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:33:18,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:18,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:18,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:33:18,643 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:18,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:18,643 INFO L85 PathProgramCache]: Analyzing trace with hash 167927732, now seen corresponding path program 1 times [2022-07-12 09:33:18,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:18,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088539688] [2022-07-12 09:33:18,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:18,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:33:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:33:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:33:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:18,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:18,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088539688] [2022-07-12 09:33:18,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088539688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:18,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:18,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:18,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121794342] [2022-07-12 09:33:18,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:18,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:18,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:18,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:18,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:18,803 INFO L87 Difference]: Start difference. First operand 37865 states and 58404 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:29,861 INFO L93 Difference]: Finished difference Result 130991 states and 208169 transitions. [2022-07-12 09:33:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:33:29,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:33:29,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:30,270 INFO L225 Difference]: With dead ends: 130991 [2022-07-12 09:33:30,270 INFO L226 Difference]: Without dead ends: 97883 [2022-07-12 09:33:30,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:30,336 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 1479 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:30,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 2445 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 09:33:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97883 states. [2022-07-12 09:33:35,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97883 to 70634. [2022-07-12 09:33:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70634 states, 63982 states have (on average 1.5179738051326936) internal successors, (97123), 64277 states have internal predecessors, (97123), 4341 states have call successors, (4341), 1939 states have call predecessors, (4341), 2309 states have return successors, (11428), 4673 states have call predecessors, (11428), 4338 states have call successors, (11428) [2022-07-12 09:33:35,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70634 states to 70634 states and 112892 transitions. [2022-07-12 09:33:35,813 INFO L78 Accepts]: Start accepts. Automaton has 70634 states and 112892 transitions. Word has length 135 [2022-07-12 09:33:35,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:35,813 INFO L495 AbstractCegarLoop]: Abstraction has 70634 states and 112892 transitions. [2022-07-12 09:33:35,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:35,814 INFO L276 IsEmpty]: Start isEmpty. Operand 70634 states and 112892 transitions. [2022-07-12 09:33:35,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:33:35,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:35,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:35,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 09:33:35,839 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:35,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:35,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1865466314, now seen corresponding path program 1 times [2022-07-12 09:33:35,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:35,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814634970] [2022-07-12 09:33:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:35,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:33:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:33:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:33:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:36,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:36,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814634970] [2022-07-12 09:33:36,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814634970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:36,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:36,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:36,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502832478] [2022-07-12 09:33:36,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:36,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:36,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:36,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:36,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:36,141 INFO L87 Difference]: Start difference. First operand 70634 states and 112892 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:45,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:45,602 INFO L93 Difference]: Finished difference Result 155154 states and 255729 transitions. [2022-07-12 09:33:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:45,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-12 09:33:45,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:45,853 INFO L225 Difference]: With dead ends: 155154 [2022-07-12 09:33:45,853 INFO L226 Difference]: Without dead ends: 89277 [2022-07-12 09:33:45,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:45,960 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 1022 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:45,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1470 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:33:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89277 states. [2022-07-12 09:33:51,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89277 to 70634. [2022-07-12 09:33:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70634 states, 63982 states have (on average 1.5139570504204307) internal successors, (96866), 64277 states have internal predecessors, (96866), 4341 states have call successors, (4341), 1939 states have call predecessors, (4341), 2309 states have return successors, (11428), 4673 states have call predecessors, (11428), 4338 states have call successors, (11428) [2022-07-12 09:33:52,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70634 states to 70634 states and 112635 transitions. [2022-07-12 09:33:52,061 INFO L78 Accepts]: Start accepts. Automaton has 70634 states and 112635 transitions. Word has length 135 [2022-07-12 09:33:52,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:52,061 INFO L495 AbstractCegarLoop]: Abstraction has 70634 states and 112635 transitions. [2022-07-12 09:33:52,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:52,061 INFO L276 IsEmpty]: Start isEmpty. Operand 70634 states and 112635 transitions. [2022-07-12 09:33:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 09:33:52,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:52,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:52,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 09:33:52,282 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:52,282 INFO L85 PathProgramCache]: Analyzing trace with hash 562792308, now seen corresponding path program 1 times [2022-07-12 09:33:52,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:52,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674134125] [2022-07-12 09:33:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:52,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:52,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:33:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:33:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:33:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:52,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:52,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674134125] [2022-07-12 09:33:52,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674134125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:52,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:52,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:52,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946677738] [2022-07-12 09:33:52,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:52,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:52,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:52,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:52,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:52,423 INFO L87 Difference]: Start difference. First operand 70634 states and 112635 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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)