./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.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 6f520cae1fe274b0f3a6786f3c06c3b2db48180a97ced5103b1a188b50ee581d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:53:53,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:53:53,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:53:53,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:53:53,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:53:53,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:53:53,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:53:53,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:53:53,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:53:53,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:53:53,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:53:53,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:53:53,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:53:53,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:53:53,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:53:53,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:53:53,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:53:53,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:53:53,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:53:53,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:53:53,406 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:53:53,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:53:53,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:53:53,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:53:53,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:53:53,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:53:53,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:53:53,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:53:53,416 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:53:53,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:53:53,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:53:53,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:53:53,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:53:53,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:53:53,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:53:53,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:53:53,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:53:53,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:53:53,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:53:53,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:53:53,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:53:53,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:53:53,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:53:53,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:53:53,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:53:53,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:53:53,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:53:53,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:53:53,451 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:53:53,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:53:53,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:53:53,452 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:53:53,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:53:53,453 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:53:53,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:53:53,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:53:53,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:53:53,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:53:53,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:53:53,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:53:53,454 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:53:53,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:53:53,454 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:53:53,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:53:53,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:53:53,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:53:53,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:53:53,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:53:53,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:53:53,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:53:53,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:53:53,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:53:53,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:53:53,456 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:53:53,457 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:53:53,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:53:53,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f520cae1fe274b0f3a6786f3c06c3b2db48180a97ced5103b1a188b50ee581d [2022-07-22 20:53:53,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:53:53,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:53:53,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:53:53,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:53:53,676 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:53:53,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c [2022-07-22 20:53:53,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df1a5711/9bfa3e69893a4ff49fe39f19d4ebd4cf/FLAG1e83e3b7f [2022-07-22 20:53:54,096 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:53:54,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c [2022-07-22 20:53:54,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df1a5711/9bfa3e69893a4ff49fe39f19d4ebd4cf/FLAG1e83e3b7f [2022-07-22 20:53:54,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df1a5711/9bfa3e69893a4ff49fe39f19d4ebd4cf [2022-07-22 20:53:54,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:53:54,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:53:54,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:53:54,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:53:54,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:53:54,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1420f234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54, skipping insertion in model container [2022-07-22 20:53:54,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:53:54,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:53:54,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c[911,924] [2022-07-22 20:53:54,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c[8416,8429] [2022-07-22 20:53:54,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:53:54,402 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:53:54,409 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c[911,924] [2022-07-22 20:53:54,420 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.13.cil-2.c[8416,8429] [2022-07-22 20:53:54,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:53:54,467 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:53:54,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54 WrapperNode [2022-07-22 20:53:54,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:53:54,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:53:54,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:53:54,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:53:54,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,514 INFO L137 Inliner]: procedures = 81, calls = 100, calls flagged for inlining = 50, calls inlined = 50, statements flattened = 1136 [2022-07-22 20:53:54,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:53:54,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:53:54,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:53:54,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:53:54,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:53:54,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:53:54,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:53:54,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:53:54,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (1/1) ... [2022-07-22 20:53:54,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:53:54,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:53:54,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:53:54,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 20:53:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:53:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:53:54,690 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:53:54,690 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:53:54,691 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:53:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:53:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:53:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:53:54,692 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:53:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:53:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:53:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:53:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:53:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:53:54,693 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:53:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:53:54,694 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:53:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:53:54,694 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:53:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:53:54,694 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:53:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:53:54,695 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:53:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:53:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:53:54,695 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:53:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:53:54,696 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:53:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:53:54,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:53:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:53:54,696 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:53:54,853 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:53:54,864 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:53:55,473 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-22 20:53:55,473 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-22 20:53:55,529 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:53:55,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:53:55,537 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-22 20:53:55,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:53:55 BoogieIcfgContainer [2022-07-22 20:53:55,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:53:55,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:53:55,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:53:55,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:53:55,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:53:54" (1/3) ... [2022-07-22 20:53:55,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68adf5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:53:55, skipping insertion in model container [2022-07-22 20:53:55,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:53:54" (2/3) ... [2022-07-22 20:53:55,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68adf5f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:53:55, skipping insertion in model container [2022-07-22 20:53:55,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:53:55" (3/3) ... [2022-07-22 20:53:55,544 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.13.cil-2.c [2022-07-22 20:53:55,553 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:53:55,553 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:53:55,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:53:55,597 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@4430b195, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@33bf173a [2022-07-22 20:53:55,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:53:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 524 states, 464 states have (on average 1.6422413793103448) internal successors, (762), 470 states have internal predecessors, (762), 43 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-22 20:53:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:53:55,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:55,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:55,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:55,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:55,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1273219449, now seen corresponding path program 1 times [2022-07-22 20:53:55,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:55,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323433688] [2022-07-22 20:53:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:55,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:55,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:55,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:55,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:53:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:55,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:53:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:55,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:53:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:55,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:55,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323433688] [2022-07-22 20:53:55,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323433688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:55,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:55,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:53:55,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079867740] [2022-07-22 20:53:55,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:55,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:53:55,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:53:55,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:53:55,949 INFO L87 Difference]: Start difference. First operand has 524 states, 464 states have (on average 1.6422413793103448) internal successors, (762), 470 states have internal predecessors, (762), 43 states have call successors, (43), 14 states have call predecessors, (43), 14 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:53:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:56,947 INFO L93 Difference]: Finished difference Result 1170 states and 1881 transitions. [2022-07-22 20:53:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:56,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:53:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:56,960 INFO L225 Difference]: With dead ends: 1170 [2022-07-22 20:53:56,960 INFO L226 Difference]: Without dead ends: 665 [2022-07-22 20:53:56,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:53:56,967 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1335 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:56,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 2808 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:53:56,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-07-22 20:53:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 626. [2022-07-22 20:53:57,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 546 states have (on average 1.532967032967033) internal successors, (837), 552 states have internal predecessors, (837), 56 states have call successors, (56), 21 states have call predecessors, (56), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2022-07-22 20:53:57,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 952 transitions. [2022-07-22 20:53:57,029 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 952 transitions. Word has length 65 [2022-07-22 20:53:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:57,030 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 952 transitions. [2022-07-22 20:53:57,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:53:57,030 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 952 transitions. [2022-07-22 20:53:57,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:53:57,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:57,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:57,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:53:57,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash 265120581, now seen corresponding path program 1 times [2022-07-22 20:53:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799060962] [2022-07-22 20:53:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:57,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:57,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:57,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:57,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:57,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:53:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:57,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:53:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:57,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:53:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:57,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:57,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799060962] [2022-07-22 20:53:57,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799060962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:57,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:57,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:53:57,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042855198] [2022-07-22 20:53:57,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:57,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:53:57,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:57,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:53:57,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:53:57,155 INFO L87 Difference]: Start difference. First operand 626 states and 952 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 20:53:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:58,656 INFO L93 Difference]: Finished difference Result 1659 states and 2412 transitions. [2022-07-22 20:53:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:53:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-22 20:53:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:58,696 INFO L225 Difference]: With dead ends: 1659 [2022-07-22 20:53:58,697 INFO L226 Difference]: Without dead ends: 1438 [2022-07-22 20:53:58,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:53:58,704 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 4541 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:58,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4561 Valid, 2943 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [751 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:53:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-07-22 20:53:58,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1299. [2022-07-22 20:53:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1089 states have (on average 1.4471992653810835) internal successors, (1576), 1103 states have internal predecessors, (1576), 127 states have call successors, (127), 74 states have call predecessors, (127), 81 states have return successors, (139), 123 states have call predecessors, (139), 125 states have call successors, (139) [2022-07-22 20:53:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1842 transitions. [2022-07-22 20:53:58,812 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1842 transitions. Word has length 65 [2022-07-22 20:53:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:58,813 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 1842 transitions. [2022-07-22 20:53:58,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 20:53:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1842 transitions. [2022-07-22 20:53:58,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:53:58,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:58,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:58,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:53:58,819 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:58,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1163818986, now seen corresponding path program 1 times [2022-07-22 20:53:58,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:58,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795329537] [2022-07-22 20:53:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:58,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:53:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:53:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:53:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:53:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:53:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:53:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:58,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:58,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795329537] [2022-07-22 20:53:58,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795329537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:58,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:58,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:53:58,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409554256] [2022-07-22 20:53:58,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:58,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:53:58,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:53:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:53:58,976 INFO L87 Difference]: Start difference. First operand 1299 states and 1842 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:53:59,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:59,926 INFO L93 Difference]: Finished difference Result 2325 states and 3236 transitions. [2022-07-22 20:53:59,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:53:59,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:53:59,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:59,933 INFO L225 Difference]: With dead ends: 2325 [2022-07-22 20:53:59,933 INFO L226 Difference]: Without dead ends: 1437 [2022-07-22 20:53:59,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:53:59,940 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 1052 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:59,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 3104 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:53:59,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2022-07-22 20:53:59,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1329. [2022-07-22 20:53:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 1113 states have (on average 1.4348607367475292) internal successors, (1597), 1127 states have internal predecessors, (1597), 127 states have call successors, (127), 74 states have call predecessors, (127), 87 states have return successors, (145), 129 states have call predecessors, (145), 125 states have call successors, (145) [2022-07-22 20:53:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1869 transitions. [2022-07-22 20:53:59,992 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1869 transitions. Word has length 66 [2022-07-22 20:53:59,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:59,993 INFO L495 AbstractCegarLoop]: Abstraction has 1329 states and 1869 transitions. [2022-07-22 20:53:59,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:53:59,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1869 transitions. [2022-07-22 20:53:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:53:59,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:59,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:59,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:53:59,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:59,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash 134459688, now seen corresponding path program 1 times [2022-07-22 20:53:59,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:59,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726114314] [2022-07-22 20:53:59,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:59,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:00,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:00,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:00,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:54:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:00,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:54:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:00,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:00,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726114314] [2022-07-22 20:54:00,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726114314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:00,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:00,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:54:00,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631918313] [2022-07-22 20:54:00,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:00,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:54:00,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:00,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:54:00,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:54:00,124 INFO L87 Difference]: Start difference. First operand 1329 states and 1869 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:54:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:01,571 INFO L93 Difference]: Finished difference Result 3667 states and 5056 transitions. [2022-07-22 20:54:01,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:54:01,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-22 20:54:01,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:01,577 INFO L225 Difference]: With dead ends: 3667 [2022-07-22 20:54:01,577 INFO L226 Difference]: Without dead ends: 1572 [2022-07-22 20:54:01,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:54:01,587 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 4601 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:01,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4621 Valid, 2967 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:54:01,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2022-07-22 20:54:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1417. [2022-07-22 20:54:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1166 states have (on average 1.4013722126929673) internal successors, (1634), 1180 states have internal predecessors, (1634), 147 states have call successors, (147), 88 states have call predecessors, (147), 102 states have return successors, (166), 150 states have call predecessors, (166), 145 states have call successors, (166) [2022-07-22 20:54:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1947 transitions. [2022-07-22 20:54:01,632 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1947 transitions. Word has length 66 [2022-07-22 20:54:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:01,633 INFO L495 AbstractCegarLoop]: Abstraction has 1417 states and 1947 transitions. [2022-07-22 20:54:01,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:54:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1947 transitions. [2022-07-22 20:54:01,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:54:01,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:01,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:01,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:54:01,635 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:01,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash -949162084, now seen corresponding path program 1 times [2022-07-22 20:54:01,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:01,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689833744] [2022-07-22 20:54:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:01,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:01,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:01,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:01,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:54:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:54:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:01,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689833744] [2022-07-22 20:54:01,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689833744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:01,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:01,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:54:01,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557007817] [2022-07-22 20:54:01,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:01,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:54:01,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:01,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:54:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:54:01,718 INFO L87 Difference]: Start difference. First operand 1417 states and 1947 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:54:02,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:02,668 INFO L93 Difference]: Finished difference Result 2594 states and 3498 transitions. [2022-07-22 20:54:02,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:54:02,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-22 20:54:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:02,674 INFO L225 Difference]: With dead ends: 2594 [2022-07-22 20:54:02,674 INFO L226 Difference]: Without dead ends: 1588 [2022-07-22 20:54:02,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:54:02,677 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 698 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 1901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:02,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 3410 Invalid, 1901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:54:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2022-07-22 20:54:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1457. [2022-07-22 20:54:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1198 states have (on average 1.3881469115191987) internal successors, (1663), 1212 states have internal predecessors, (1663), 147 states have call successors, (147), 88 states have call predecessors, (147), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2022-07-22 20:54:02,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 1984 transitions. [2022-07-22 20:54:02,713 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 1984 transitions. Word has length 91 [2022-07-22 20:54:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:02,713 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 1984 transitions. [2022-07-22 20:54:02,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:54:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 1984 transitions. [2022-07-22 20:54:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:54:02,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:02,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:02,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:54:02,715 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:02,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:02,715 INFO L85 PathProgramCache]: Analyzing trace with hash -505261410, now seen corresponding path program 1 times [2022-07-22 20:54:02,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:02,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428922237] [2022-07-22 20:54:02,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:02,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:02,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:02,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:02,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:02,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:54:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:54:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:02,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428922237] [2022-07-22 20:54:02,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428922237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:02,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:02,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:54:02,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242196427] [2022-07-22 20:54:02,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:02,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:54:02,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:54:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:54:02,796 INFO L87 Difference]: Start difference. First operand 1457 states and 1984 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:54:03,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:03,700 INFO L93 Difference]: Finished difference Result 3495 states and 4589 transitions. [2022-07-22 20:54:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 20:54:03,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:54:03,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:03,710 INFO L225 Difference]: With dead ends: 3495 [2022-07-22 20:54:03,710 INFO L226 Difference]: Without dead ends: 2450 [2022-07-22 20:54:03,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-22 20:54:03,713 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 1557 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:03,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 2730 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:54:03,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2022-07-22 20:54:03,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2134. [2022-07-22 20:54:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 1727 states have (on average 1.3474232773595831) internal successors, (2327), 1754 states have internal predecessors, (2327), 223 states have call successors, (223), 141 states have call predecessors, (223), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2022-07-22 20:54:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2837 transitions. [2022-07-22 20:54:03,778 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2837 transitions. Word has length 91 [2022-07-22 20:54:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:03,778 INFO L495 AbstractCegarLoop]: Abstraction has 2134 states and 2837 transitions. [2022-07-22 20:54:03,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:54:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2837 transitions. [2022-07-22 20:54:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:54:03,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:03,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:03,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:54:03,780 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:03,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:03,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1433900636, now seen corresponding path program 1 times [2022-07-22 20:54:03,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:03,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500837770] [2022-07-22 20:54:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:03,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:03,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:03,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:03,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:54:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:03,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:54:03,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:03,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500837770] [2022-07-22 20:54:03,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500837770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:03,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:03,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:03,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260758748] [2022-07-22 20:54:03,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:03,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:03,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:03,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:03,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:03,856 INFO L87 Difference]: Start difference. First operand 2134 states and 2837 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:54:04,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:04,253 INFO L93 Difference]: Finished difference Result 5793 states and 7619 transitions. [2022-07-22 20:54:04,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:54:04,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-22 20:54:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:04,266 INFO L225 Difference]: With dead ends: 5793 [2022-07-22 20:54:04,266 INFO L226 Difference]: Without dead ends: 4073 [2022-07-22 20:54:04,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:54:04,270 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 2219 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:04,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 1557 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:54:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2022-07-22 20:54:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3853. [2022-07-22 20:54:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3853 states, 3065 states have (on average 1.301794453507341) internal successors, (3990), 3128 states have internal predecessors, (3990), 416 states have call successors, (416), 275 states have call predecessors, (416), 370 states have return successors, (627), 454 states have call predecessors, (627), 414 states have call successors, (627) [2022-07-22 20:54:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 5033 transitions. [2022-07-22 20:54:04,386 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 5033 transitions. Word has length 91 [2022-07-22 20:54:04,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:04,386 INFO L495 AbstractCegarLoop]: Abstraction has 3853 states and 5033 transitions. [2022-07-22 20:54:04,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:54:04,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 5033 transitions. [2022-07-22 20:54:04,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:54:04,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:04,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:04,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:54:04,388 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:04,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:04,389 INFO L85 PathProgramCache]: Analyzing trace with hash 376062558, now seen corresponding path program 1 times [2022-07-22 20:54:04,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:04,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177664914] [2022-07-22 20:54:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:04,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:04,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:54:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:54:04,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:04,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177664914] [2022-07-22 20:54:04,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177664914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:04,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:04,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:54:04,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109880512] [2022-07-22 20:54:04,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:04,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:54:04,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:54:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:54:04,443 INFO L87 Difference]: Start difference. First operand 3853 states and 5033 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:54:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:04,897 INFO L93 Difference]: Finished difference Result 5691 states and 7336 transitions. [2022-07-22 20:54:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 20:54:04,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:54:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:04,906 INFO L225 Difference]: With dead ends: 5691 [2022-07-22 20:54:04,906 INFO L226 Difference]: Without dead ends: 2252 [2022-07-22 20:54:04,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:04,912 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1154 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:04,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1171 Valid, 1783 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:54:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2252 states. [2022-07-22 20:54:04,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2252 to 2134. [2022-07-22 20:54:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2134 states, 1727 states have (on average 1.322524609148813) internal successors, (2284), 1754 states have internal predecessors, (2284), 223 states have call successors, (223), 141 states have call predecessors, (223), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2022-07-22 20:54:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2794 transitions. [2022-07-22 20:54:04,975 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2794 transitions. Word has length 91 [2022-07-22 20:54:04,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:04,975 INFO L495 AbstractCegarLoop]: Abstraction has 2134 states and 2794 transitions. [2022-07-22 20:54:04,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:54:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2794 transitions. [2022-07-22 20:54:04,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 20:54:04,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:04,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:04,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:54:04,978 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:04,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1860606532, now seen corresponding path program 1 times [2022-07-22 20:54:04,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:04,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128166951] [2022-07-22 20:54:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:54:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:54:05,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:05,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128166951] [2022-07-22 20:54:05,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128166951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:05,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:05,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:54:05,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434654431] [2022-07-22 20:54:05,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:05,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:54:05,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:05,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:54:05,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:54:05,049 INFO L87 Difference]: Start difference. First operand 2134 states and 2794 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:54:06,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:06,316 INFO L93 Difference]: Finished difference Result 4960 states and 6396 transitions. [2022-07-22 20:54:06,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 20:54:06,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-22 20:54:06,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:06,326 INFO L225 Difference]: With dead ends: 4960 [2022-07-22 20:54:06,326 INFO L226 Difference]: Without dead ends: 2933 [2022-07-22 20:54:06,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-22 20:54:06,331 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 2131 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2174 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:06,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2174 Valid, 2873 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [408 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:54:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2933 states. [2022-07-22 20:54:06,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2933 to 2756. [2022-07-22 20:54:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2193 states have (on average 1.2836297309621523) internal successors, (2815), 2228 states have internal predecessors, (2815), 301 states have call successors, (301), 189 states have call predecessors, (301), 260 states have return successors, (420), 341 states have call predecessors, (420), 299 states have call successors, (420) [2022-07-22 20:54:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3536 transitions. [2022-07-22 20:54:06,423 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3536 transitions. Word has length 92 [2022-07-22 20:54:06,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:06,424 INFO L495 AbstractCegarLoop]: Abstraction has 2756 states and 3536 transitions. [2022-07-22 20:54:06,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:54:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3536 transitions. [2022-07-22 20:54:06,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 20:54:06,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:06,430 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:06,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:54:06,431 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:06,431 INFO L85 PathProgramCache]: Analyzing trace with hash 402118481, now seen corresponding path program 1 times [2022-07-22 20:54:06,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:06,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019077574] [2022-07-22 20:54:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:06,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:54:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:54:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 20:54:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:54:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:54:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 20:54:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:54:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:54:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 20:54:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 20:54:06,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:06,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019077574] [2022-07-22 20:54:06,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019077574] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:54:06,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380037934] [2022-07-22 20:54:06,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:06,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:54:06,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:54:06,527 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:54:06,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:54:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:06,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:54:06,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:54:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 20:54:06,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:54:06,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380037934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:06,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:54:06,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 20:54:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379031649] [2022-07-22 20:54:06,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:06,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:54:06,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:06,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:54:06,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:06,799 INFO L87 Difference]: Start difference. First operand 2756 states and 3536 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:54:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:06,930 INFO L93 Difference]: Finished difference Result 7081 states and 8851 transitions. [2022-07-22 20:54:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:54:06,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-22 20:54:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:06,944 INFO L225 Difference]: With dead ends: 7081 [2022-07-22 20:54:06,944 INFO L226 Difference]: Without dead ends: 4893 [2022-07-22 20:54:06,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:06,947 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 61 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:06,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1553 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:54:06,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2022-07-22 20:54:07,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4848. [2022-07-22 20:54:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4848 states, 3818 states have (on average 1.247511786275537) internal successors, (4763), 3882 states have internal predecessors, (4763), 535 states have call successors, (535), 371 states have call predecessors, (535), 493 states have return successors, (727), 597 states have call predecessors, (727), 533 states have call successors, (727) [2022-07-22 20:54:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 6025 transitions. [2022-07-22 20:54:07,076 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 6025 transitions. Word has length 163 [2022-07-22 20:54:07,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:07,077 INFO L495 AbstractCegarLoop]: Abstraction has 4848 states and 6025 transitions. [2022-07-22 20:54:07,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:54:07,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 6025 transitions. [2022-07-22 20:54:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-22 20:54:07,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:07,080 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:07,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 20:54:07,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 20:54:07,296 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:07,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2105074836, now seen corresponding path program 1 times [2022-07-22 20:54:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:07,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188831700] [2022-07-22 20:54:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:07,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:54:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:54:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 20:54:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:54:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:54:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 20:54:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 20:54:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:54:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 20:54:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 20:54:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,424 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-22 20:54:07,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:07,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188831700] [2022-07-22 20:54:07,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188831700] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:54:07,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513498809] [2022-07-22 20:54:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:07,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:54:07,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:54:07,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:54:07,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:54:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:07,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:54:07,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:54:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 20:54:07,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:54:07,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513498809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:07,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:54:07,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 20:54:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266405871] [2022-07-22 20:54:07,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:07,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:54:07,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:07,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:54:07,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:07,768 INFO L87 Difference]: Start difference. First operand 4848 states and 6025 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 20:54:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:07,992 INFO L93 Difference]: Finished difference Result 13716 states and 16763 transitions. [2022-07-22 20:54:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:54:07,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 195 [2022-07-22 20:54:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:08,026 INFO L225 Difference]: With dead ends: 13716 [2022-07-22 20:54:08,026 INFO L226 Difference]: Without dead ends: 9282 [2022-07-22 20:54:08,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:08,034 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 52 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:08,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1553 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:54:08,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9282 states. [2022-07-22 20:54:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9282 to 9272. [2022-07-22 20:54:08,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9272 states, 7255 states have (on average 1.2238456237077877) internal successors, (8879), 7379 states have internal predecessors, (8879), 1035 states have call successors, (1035), 735 states have call predecessors, (1035), 980 states have return successors, (1420), 1160 states have call predecessors, (1420), 1033 states have call successors, (1420) [2022-07-22 20:54:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9272 states to 9272 states and 11334 transitions. [2022-07-22 20:54:08,385 INFO L78 Accepts]: Start accepts. Automaton has 9272 states and 11334 transitions. Word has length 195 [2022-07-22 20:54:08,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:08,385 INFO L495 AbstractCegarLoop]: Abstraction has 9272 states and 11334 transitions. [2022-07-22 20:54:08,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 20:54:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 9272 states and 11334 transitions. [2022-07-22 20:54:08,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-07-22 20:54:08,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:08,391 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:08,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:54:08,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 20:54:08,608 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:08,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1292499182, now seen corresponding path program 1 times [2022-07-22 20:54:08,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:08,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659395945] [2022-07-22 20:54:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:08,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:54:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:54:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:54:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:54:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:54:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:54:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 20:54:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:54:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:54:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:54:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 20:54:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 20:54:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:54:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:54:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 20:54:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-22 20:54:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,709 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-22 20:54:08,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:08,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659395945] [2022-07-22 20:54:08,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659395945] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:54:08,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577188362] [2022-07-22 20:54:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:08,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:54:08,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:54:08,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:54:08,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 20:54:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:08,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:54:08,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:54:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-07-22 20:54:09,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:54:09,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577188362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:09,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:54:09,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-22 20:54:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865735565] [2022-07-22 20:54:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:09,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:54:09,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:54:09,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:09,013 INFO L87 Difference]: Start difference. First operand 9272 states and 11334 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-22 20:54:09,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:09,234 INFO L93 Difference]: Finished difference Result 15802 states and 19574 transitions. [2022-07-22 20:54:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:54:09,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 195 [2022-07-22 20:54:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:09,239 INFO L225 Difference]: With dead ends: 15802 [2022-07-22 20:54:09,239 INFO L226 Difference]: Without dead ends: 403 [2022-07-22 20:54:09,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:09,258 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 661 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:09,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 765 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:54:09,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-07-22 20:54:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2022-07-22 20:54:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 369 states have (on average 1.5799457994579946) internal successors, (583), 370 states have internal predecessors, (583), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 20:54:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 637 transitions. [2022-07-22 20:54:09,268 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 637 transitions. Word has length 195 [2022-07-22 20:54:09,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:09,268 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 637 transitions. [2022-07-22 20:54:09,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-22 20:54:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 637 transitions. [2022-07-22 20:54:09,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:09,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:09,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:09,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-22 20:54:09,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:54:09,502 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:09,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:09,503 INFO L85 PathProgramCache]: Analyzing trace with hash -999047694, now seen corresponding path program 1 times [2022-07-22 20:54:09,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:09,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121121368] [2022-07-22 20:54:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:09,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:09,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:09,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121121368] [2022-07-22 20:54:09,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121121368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:09,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:09,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:54:09,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861447133] [2022-07-22 20:54:09,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:09,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:54:09,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:09,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:54:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:54:09,614 INFO L87 Difference]: Start difference. First operand 403 states and 637 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:10,826 INFO L93 Difference]: Finished difference Result 947 states and 1519 transitions. [2022-07-22 20:54:10,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:54:10,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:10,828 INFO L225 Difference]: With dead ends: 947 [2022-07-22 20:54:10,828 INFO L226 Difference]: Without dead ends: 556 [2022-07-22 20:54:10,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:54:10,829 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 1100 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:10,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1121 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:54:10,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-07-22 20:54:10,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 403. [2022-07-22 20:54:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 369 states have (on average 1.5772357723577235) internal successors, (582), 370 states have internal predecessors, (582), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 20:54:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 636 transitions. [2022-07-22 20:54:10,842 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 636 transitions. Word has length 189 [2022-07-22 20:54:10,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:10,843 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 636 transitions. [2022-07-22 20:54:10,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:10,843 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 636 transitions. [2022-07-22 20:54:10,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:10,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:10,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:10,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:54:10,844 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:10,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:10,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1604822476, now seen corresponding path program 1 times [2022-07-22 20:54:10,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:10,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660684739] [2022-07-22 20:54:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:10,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:10,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:10,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:10,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:10,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660684739] [2022-07-22 20:54:10,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660684739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:10,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:10,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:54:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609207792] [2022-07-22 20:54:10,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:10,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:54:10,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:54:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:54:10,944 INFO L87 Difference]: Start difference. First operand 403 states and 636 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:12,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:12,161 INFO L93 Difference]: Finished difference Result 939 states and 1502 transitions. [2022-07-22 20:54:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:54:12,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:12,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:12,163 INFO L225 Difference]: With dead ends: 939 [2022-07-22 20:54:12,163 INFO L226 Difference]: Without dead ends: 556 [2022-07-22 20:54:12,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:54:12,164 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1091 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:12,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1119 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:54:12,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-07-22 20:54:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 403. [2022-07-22 20:54:12,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 369 states have (on average 1.5745257452574526) internal successors, (581), 370 states have internal predecessors, (581), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 20:54:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 635 transitions. [2022-07-22 20:54:12,180 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 635 transitions. Word has length 189 [2022-07-22 20:54:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:12,180 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 635 transitions. [2022-07-22 20:54:12,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 635 transitions. [2022-07-22 20:54:12,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:12,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:12,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:12,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:54:12,182 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:12,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash -914990986, now seen corresponding path program 1 times [2022-07-22 20:54:12,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:12,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020297190] [2022-07-22 20:54:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:12,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:12,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:12,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:12,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:12,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020297190] [2022-07-22 20:54:12,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020297190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:12,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:12,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:54:12,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389508124] [2022-07-22 20:54:12,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:12,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:54:12,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:54:12,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:54:12,292 INFO L87 Difference]: Start difference. First operand 403 states and 635 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:14,697 INFO L93 Difference]: Finished difference Result 1491 states and 2402 transitions. [2022-07-22 20:54:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:54:14,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:14,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:14,700 INFO L225 Difference]: With dead ends: 1491 [2022-07-22 20:54:14,700 INFO L226 Difference]: Without dead ends: 1110 [2022-07-22 20:54:14,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:14,702 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1667 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:14,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 1766 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 20:54:14,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2022-07-22 20:54:14,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 805. [2022-07-22 20:54:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 742 states have (on average 1.587601078167116) internal successors, (1178), 744 states have internal predecessors, (1178), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-07-22 20:54:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1279 transitions. [2022-07-22 20:54:14,735 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1279 transitions. Word has length 189 [2022-07-22 20:54:14,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:14,736 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1279 transitions. [2022-07-22 20:54:14,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1279 transitions. [2022-07-22 20:54:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:14,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:14,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:14,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:54:14,737 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1103637498, now seen corresponding path program 1 times [2022-07-22 20:54:14,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:14,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349704341] [2022-07-22 20:54:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:14,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:14,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:14,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349704341] [2022-07-22 20:54:14,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349704341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:14,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:14,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:14,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657656735] [2022-07-22 20:54:14,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:14,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:14,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:14,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:14,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:14,843 INFO L87 Difference]: Start difference. First operand 805 states and 1279 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:17,351 INFO L93 Difference]: Finished difference Result 2469 states and 3985 transitions. [2022-07-22 20:54:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:17,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:17,355 INFO L225 Difference]: With dead ends: 2469 [2022-07-22 20:54:17,355 INFO L226 Difference]: Without dead ends: 1686 [2022-07-22 20:54:17,357 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 [2022-07-22 20:54:17,357 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 1700 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 3358 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 3435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:17,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 3082 Invalid, 3435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3358 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 20:54:17,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-07-22 20:54:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1178. [2022-07-22 20:54:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1086 states have (on average 1.5810313075506446) internal successors, (1717), 1089 states have internal predecessors, (1717), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-22 20:54:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1864 transitions. [2022-07-22 20:54:17,413 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1864 transitions. Word has length 189 [2022-07-22 20:54:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:17,414 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1864 transitions. [2022-07-22 20:54:17,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1864 transitions. [2022-07-22 20:54:17,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:17,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:17,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:17,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:54:17,416 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:17,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:17,416 INFO L85 PathProgramCache]: Analyzing trace with hash -620970824, now seen corresponding path program 1 times [2022-07-22 20:54:17,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:17,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864432591] [2022-07-22 20:54:17,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:17,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:17,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:17,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864432591] [2022-07-22 20:54:17,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864432591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:17,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:17,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:17,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133065956] [2022-07-22 20:54:17,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:17,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:17,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:17,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:17,530 INFO L87 Difference]: Start difference. First operand 1178 states and 1864 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:20,742 INFO L93 Difference]: Finished difference Result 3911 states and 6298 transitions. [2022-07-22 20:54:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:20,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:20,749 INFO L225 Difference]: With dead ends: 3911 [2022-07-22 20:54:20,749 INFO L226 Difference]: Without dead ends: 2755 [2022-07-22 20:54:20,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:54:20,752 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 1697 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 3360 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:20,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 3074 Invalid, 3440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3360 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 20:54:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2022-07-22 20:54:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 1925. [2022-07-22 20:54:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1775 states have (on average 1.5752112676056338) internal successors, (2796), 1780 states have internal predecessors, (2796), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-22 20:54:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3039 transitions. [2022-07-22 20:54:20,857 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3039 transitions. Word has length 189 [2022-07-22 20:54:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:20,858 INFO L495 AbstractCegarLoop]: Abstraction has 1925 states and 3039 transitions. [2022-07-22 20:54:20,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3039 transitions. [2022-07-22 20:54:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:20,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:20,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:20,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:54:20,860 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:20,860 INFO L85 PathProgramCache]: Analyzing trace with hash -122414022, now seen corresponding path program 1 times [2022-07-22 20:54:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:20,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996602441] [2022-07-22 20:54:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:20,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:20,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996602441] [2022-07-22 20:54:20,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996602441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:20,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:20,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:20,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626039598] [2022-07-22 20:54:20,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:20,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:20,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:20,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:20,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:20,973 INFO L87 Difference]: Start difference. First operand 1925 states and 3039 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:22,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:22,390 INFO L93 Difference]: Finished difference Result 4648 states and 7466 transitions. [2022-07-22 20:54:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:54:22,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:22,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:22,400 INFO L225 Difference]: With dead ends: 4648 [2022-07-22 20:54:22,401 INFO L226 Difference]: Without dead ends: 2745 [2022-07-22 20:54:22,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:22,404 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 1378 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:22,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 1482 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:54:22,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2745 states. [2022-07-22 20:54:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2745 to 1925. [2022-07-22 20:54:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1775 states have (on average 1.572394366197183) internal successors, (2791), 1780 states have internal predecessors, (2791), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-22 20:54:22,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3034 transitions. [2022-07-22 20:54:22,514 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3034 transitions. Word has length 189 [2022-07-22 20:54:22,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:22,514 INFO L495 AbstractCegarLoop]: Abstraction has 1925 states and 3034 transitions. [2022-07-22 20:54:22,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:22,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3034 transitions. [2022-07-22 20:54:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:22,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:22,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:22,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:54:22,516 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:22,516 INFO L85 PathProgramCache]: Analyzing trace with hash 447857784, now seen corresponding path program 1 times [2022-07-22 20:54:22,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:22,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328745930] [2022-07-22 20:54:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:22,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:22,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:22,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328745930] [2022-07-22 20:54:22,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328745930] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:22,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:22,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:22,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854321737] [2022-07-22 20:54:22,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:22,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:22,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:22,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:22,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:22,644 INFO L87 Difference]: Start difference. First operand 1925 states and 3034 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:24,068 INFO L93 Difference]: Finished difference Result 4642 states and 7440 transitions. [2022-07-22 20:54:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:54:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:24,075 INFO L225 Difference]: With dead ends: 4642 [2022-07-22 20:54:24,075 INFO L226 Difference]: Without dead ends: 2739 [2022-07-22 20:54:24,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:24,079 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1379 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:24,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 1476 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:54:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2022-07-22 20:54:24,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 1925. [2022-07-22 20:54:24,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1775 states have (on average 1.5695774647887324) internal successors, (2786), 1780 states have internal predecessors, (2786), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-22 20:54:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3029 transitions. [2022-07-22 20:54:24,211 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3029 transitions. Word has length 189 [2022-07-22 20:54:24,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:24,211 INFO L495 AbstractCegarLoop]: Abstraction has 1925 states and 3029 transitions. [2022-07-22 20:54:24,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:24,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3029 transitions. [2022-07-22 20:54:24,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:24,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:24,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:24,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:54:24,213 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:24,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1851726970, now seen corresponding path program 1 times [2022-07-22 20:54:24,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:24,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521119743] [2022-07-22 20:54:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:24,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:24,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:24,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:24,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:24,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:24,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521119743] [2022-07-22 20:54:24,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521119743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:24,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:24,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:24,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292918334] [2022-07-22 20:54:24,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:24,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:24,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:24,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:24,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:24,336 INFO L87 Difference]: Start difference. First operand 1925 states and 3029 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:26,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:26,240 INFO L93 Difference]: Finished difference Result 4630 states and 7402 transitions. [2022-07-22 20:54:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:54:26,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:26,247 INFO L225 Difference]: With dead ends: 4630 [2022-07-22 20:54:26,248 INFO L226 Difference]: Without dead ends: 2727 [2022-07-22 20:54:26,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:26,252 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 1283 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:26,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 1633 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 20:54:26,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2022-07-22 20:54:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 1925. [2022-07-22 20:54:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1775 states have (on average 1.5667605633802817) internal successors, (2781), 1780 states have internal predecessors, (2781), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-07-22 20:54:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 3024 transitions. [2022-07-22 20:54:26,425 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 3024 transitions. Word has length 189 [2022-07-22 20:54:26,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:26,425 INFO L495 AbstractCegarLoop]: Abstraction has 1925 states and 3024 transitions. [2022-07-22 20:54:26,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:26,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 3024 transitions. [2022-07-22 20:54:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:26,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:26,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:26,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:54:26,427 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:26,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:26,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1775858436, now seen corresponding path program 1 times [2022-07-22 20:54:26,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:26,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008147124] [2022-07-22 20:54:26,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:26,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:26,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:26,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008147124] [2022-07-22 20:54:26,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008147124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:26,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:26,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:26,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120230414] [2022-07-22 20:54:26,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:26,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:26,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:26,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:26,584 INFO L87 Difference]: Start difference. First operand 1925 states and 3024 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:29,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:29,997 INFO L93 Difference]: Finished difference Result 6657 states and 10597 transitions. [2022-07-22 20:54:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:29,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:29,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:30,010 INFO L225 Difference]: With dead ends: 6657 [2022-07-22 20:54:30,010 INFO L226 Difference]: Without dead ends: 4754 [2022-07-22 20:54:30,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:54:30,015 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 1672 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:30,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 3046 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3282 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 20:54:30,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4754 states. [2022-07-22 20:54:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4754 to 3438. [2022-07-22 20:54:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3438 states, 3172 states have (on average 1.5614754098360655) internal successors, (4953), 3181 states have internal predecessors, (4953), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-07-22 20:54:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3438 states to 3438 states and 5394 transitions. [2022-07-22 20:54:30,443 INFO L78 Accepts]: Start accepts. Automaton has 3438 states and 5394 transitions. Word has length 189 [2022-07-22 20:54:30,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:30,444 INFO L495 AbstractCegarLoop]: Abstraction has 3438 states and 5394 transitions. [2022-07-22 20:54:30,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3438 states and 5394 transitions. [2022-07-22 20:54:30,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:30,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:30,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:30,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:54:30,450 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:30,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash 323879994, now seen corresponding path program 1 times [2022-07-22 20:54:30,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:30,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053780851] [2022-07-22 20:54:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:30,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:30,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:30,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:30,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:30,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053780851] [2022-07-22 20:54:30,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053780851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:30,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:30,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:30,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787128935] [2022-07-22 20:54:30,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:30,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:30,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:30,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:30,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:30,587 INFO L87 Difference]: Start difference. First operand 3438 states and 5394 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:34,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:34,374 INFO L93 Difference]: Finished difference Result 12200 states and 19381 transitions. [2022-07-22 20:54:34,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:34,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:34,395 INFO L225 Difference]: With dead ends: 12200 [2022-07-22 20:54:34,395 INFO L226 Difference]: Without dead ends: 8784 [2022-07-22 20:54:34,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:54:34,401 INFO L413 NwaCegarLoop]: 1040 mSDtfsCounter, 1671 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 3274 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 3358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:34,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 3041 Invalid, 3358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3274 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 20:54:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8784 states. [2022-07-22 20:54:34,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8784 to 6463. [2022-07-22 20:54:34,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6463 states, 5965 states have (on average 1.5575859178541491) internal successors, (9291), 5982 states have internal predecessors, (9291), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-22 20:54:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 10146 transitions. [2022-07-22 20:54:34,865 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 10146 transitions. Word has length 189 [2022-07-22 20:54:34,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:34,867 INFO L495 AbstractCegarLoop]: Abstraction has 6463 states and 10146 transitions. [2022-07-22 20:54:34,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 10146 transitions. [2022-07-22 20:54:34,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:34,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:34,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:34,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:54:34,873 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:34,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:34,873 INFO L85 PathProgramCache]: Analyzing trace with hash 668708156, now seen corresponding path program 1 times [2022-07-22 20:54:34,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:34,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815093173] [2022-07-22 20:54:34,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:34,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:35,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:35,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:35,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:35,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:35,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815093173] [2022-07-22 20:54:35,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815093173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:35,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:35,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:35,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697667652] [2022-07-22 20:54:35,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:35,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:35,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:35,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:35,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:35,052 INFO L87 Difference]: Start difference. First operand 6463 states and 10146 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:37,232 INFO L93 Difference]: Finished difference Result 15324 states and 24399 transitions. [2022-07-22 20:54:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:54:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:37,253 INFO L225 Difference]: With dead ends: 15324 [2022-07-22 20:54:37,254 INFO L226 Difference]: Without dead ends: 8883 [2022-07-22 20:54:37,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:54:37,266 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 1197 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1556 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:37,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 1667 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1556 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:54:37,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2022-07-22 20:54:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 6463. [2022-07-22 20:54:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6463 states, 5965 states have (on average 1.5547359597652977) internal successors, (9274), 5982 states have internal predecessors, (9274), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2022-07-22 20:54:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 10129 transitions. [2022-07-22 20:54:37,801 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 10129 transitions. Word has length 189 [2022-07-22 20:54:37,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:37,802 INFO L495 AbstractCegarLoop]: Abstraction has 6463 states and 10129 transitions. [2022-07-22 20:54:37,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:37,802 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 10129 transitions. [2022-07-22 20:54:37,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:37,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:37,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:37,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 20:54:37,806 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:37,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:37,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1649662970, now seen corresponding path program 1 times [2022-07-22 20:54:37,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:37,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273387899] [2022-07-22 20:54:37,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:37,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:37,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:37,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273387899] [2022-07-22 20:54:37,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273387899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:37,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:37,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:37,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879042661] [2022-07-22 20:54:37,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:37,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:37,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:37,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:37,931 INFO L87 Difference]: Start difference. First operand 6463 states and 10129 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:42,213 INFO L93 Difference]: Finished difference Result 23261 states and 36875 transitions. [2022-07-22 20:54:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:42,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:42,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:42,251 INFO L225 Difference]: With dead ends: 23261 [2022-07-22 20:54:42,251 INFO L226 Difference]: Without dead ends: 16820 [2022-07-22 20:54:42,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:54:42,264 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 1663 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 3247 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:42,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1683 Valid, 3030 Invalid, 3331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3247 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 20:54:42,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16820 states. [2022-07-22 20:54:43,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16820 to 12545. [2022-07-22 20:54:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12545 states, 11583 states have (on average 1.5517568850902184) internal successors, (17974), 11616 states have internal predecessors, (17974), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2022-07-22 20:54:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12545 states to 12545 states and 19711 transitions. [2022-07-22 20:54:43,347 INFO L78 Accepts]: Start accepts. Automaton has 12545 states and 19711 transitions. Word has length 189 [2022-07-22 20:54:43,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:43,347 INFO L495 AbstractCegarLoop]: Abstraction has 12545 states and 19711 transitions. [2022-07-22 20:54:43,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:43,348 INFO L276 IsEmpty]: Start isEmpty. Operand 12545 states and 19711 transitions. [2022-07-22 20:54:43,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:43,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:43,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:43,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 20:54:43,354 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:43,354 INFO L85 PathProgramCache]: Analyzing trace with hash -119808644, now seen corresponding path program 1 times [2022-07-22 20:54:43,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:43,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291854326] [2022-07-22 20:54:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:43,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:43,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:43,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:43,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:43,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291854326] [2022-07-22 20:54:43,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291854326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:43,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:43,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:43,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016144089] [2022-07-22 20:54:43,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:43,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:43,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:43,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:43,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:43,485 INFO L87 Difference]: Start difference. First operand 12545 states and 19711 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:49,547 INFO L93 Difference]: Finished difference Result 45421 states and 72203 transitions. [2022-07-22 20:54:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:54:49,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:54:49,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:49,620 INFO L225 Difference]: With dead ends: 45421 [2022-07-22 20:54:49,621 INFO L226 Difference]: Without dead ends: 32898 [2022-07-22 20:54:49,648 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 [2022-07-22 20:54:49,649 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 1662 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 3239 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:49,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 3025 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3239 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 20:54:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32898 states. [2022-07-22 20:54:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32898 to 24738. [2022-07-22 20:54:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24738 states, 22848 states have (on average 1.5500700280112045) internal successors, (35416), 22913 states have internal predecessors, (35416), 1435 states have call successors, (1435), 390 states have call predecessors, (1435), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2022-07-22 20:54:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24738 states to 24738 states and 39079 transitions. [2022-07-22 20:54:52,044 INFO L78 Accepts]: Start accepts. Automaton has 24738 states and 39079 transitions. Word has length 189 [2022-07-22 20:54:52,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:54:52,044 INFO L495 AbstractCegarLoop]: Abstraction has 24738 states and 39079 transitions. [2022-07-22 20:54:52,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:54:52,045 INFO L276 IsEmpty]: Start isEmpty. Operand 24738 states and 39079 transitions. [2022-07-22 20:54:52,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:54:52,054 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:54:52,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:54:52,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 20:54:52,054 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:54:52,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:54:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash -731077702, now seen corresponding path program 1 times [2022-07-22 20:54:52,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:54:52,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883983545] [2022-07-22 20:54:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:54:52,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:54:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:54:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:54:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:54:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:54:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:54:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:54:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:54:52,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:54:52,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883983545] [2022-07-22 20:54:52,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883983545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:54:52,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:54:52,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:54:52,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322979903] [2022-07-22 20:54:52,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:54:52,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:54:52,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:54:52,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:54:52,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:54:52,205 INFO L87 Difference]: Start difference. First operand 24738 states and 39079 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:03,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:55:03,304 INFO L93 Difference]: Finished difference Result 89740 states and 143457 transitions. [2022-07-22 20:55:03,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:55:03,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:55:03,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:55:03,498 INFO L225 Difference]: With dead ends: 89740 [2022-07-22 20:55:03,499 INFO L226 Difference]: Without dead ends: 65024 [2022-07-22 20:55:03,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:55:03,559 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 1664 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 3228 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:55:03,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1684 Valid, 3018 Invalid, 3315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 3228 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 20:55:03,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65024 states. [2022-07-22 20:55:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65024 to 49187. [2022-07-22 20:55:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49187 states, 45441 states have (on average 1.5491296406329087) internal successors, (70394), 45570 states have internal predecessors, (70394), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-22 20:55:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49187 states to 49187 states and 78395 transitions. [2022-07-22 20:55:08,479 INFO L78 Accepts]: Start accepts. Automaton has 49187 states and 78395 transitions. Word has length 189 [2022-07-22 20:55:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:55:08,479 INFO L495 AbstractCegarLoop]: Abstraction has 49187 states and 78395 transitions. [2022-07-22 20:55:08,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:08,479 INFO L276 IsEmpty]: Start isEmpty. Operand 49187 states and 78395 transitions. [2022-07-22 20:55:08,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:55:08,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:55:08,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:55:08,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 20:55:08,497 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:55:08,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:55:08,498 INFO L85 PathProgramCache]: Analyzing trace with hash -2136269380, now seen corresponding path program 1 times [2022-07-22 20:55:08,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:55:08,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624864785] [2022-07-22 20:55:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:55:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:55:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:08,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:55:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:55:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:55:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:08,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:55:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:08,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:55:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:55:08,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:55:08,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624864785] [2022-07-22 20:55:08,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624864785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:55:08,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:55:08,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:55:08,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270213320] [2022-07-22 20:55:08,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:55:08,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:55:08,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:55:08,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:55:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:55:08,618 INFO L87 Difference]: Start difference. First operand 49187 states and 78395 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:55:18,224 INFO L93 Difference]: Finished difference Result 114970 states and 186342 transitions. [2022-07-22 20:55:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:55:18,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:55:18,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:55:18,459 INFO L225 Difference]: With dead ends: 114970 [2022-07-22 20:55:18,459 INFO L226 Difference]: Without dead ends: 65805 [2022-07-22 20:55:18,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:55:18,560 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1429 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:55:18,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 1413 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:55:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65805 states. [2022-07-22 20:55:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65805 to 49187. [2022-07-22 20:55:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49187 states, 45441 states have (on average 1.5462907946568076) internal successors, (70265), 45570 states have internal predecessors, (70265), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2022-07-22 20:55:23,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49187 states to 49187 states and 78266 transitions. [2022-07-22 20:55:23,933 INFO L78 Accepts]: Start accepts. Automaton has 49187 states and 78266 transitions. Word has length 189 [2022-07-22 20:55:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:55:23,934 INFO L495 AbstractCegarLoop]: Abstraction has 49187 states and 78266 transitions. [2022-07-22 20:55:23,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 49187 states and 78266 transitions. [2022-07-22 20:55:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:55:23,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:55:23,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:55:23,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 20:55:23,956 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:55:23,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:55:23,957 INFO L85 PathProgramCache]: Analyzing trace with hash -689688514, now seen corresponding path program 1 times [2022-07-22 20:55:23,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:55:23,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052445739] [2022-07-22 20:55:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:55:23,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:55:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:23,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:55:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:55:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:55:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:24,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:55:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:55:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:55:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:55:24,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:55:24,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052445739] [2022-07-22 20:55:24,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052445739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:55:24,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:55:24,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:55:24,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848994456] [2022-07-22 20:55:24,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:55:24,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:55:24,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:55:24,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:55:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:55:24,076 INFO L87 Difference]: Start difference. First operand 49187 states and 78266 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:55:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:55:51,484 INFO L93 Difference]: Finished difference Result 201031 states and 322109 transitions. [2022-07-22 20:55:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:55:51,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:55:51,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:55:52,110 INFO L225 Difference]: With dead ends: 201031 [2022-07-22 20:55:52,111 INFO L226 Difference]: Without dead ends: 151866 [2022-07-22 20:55:52,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:55:52,227 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 2137 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 3183 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:55:52,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 2989 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3183 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 20:55:52,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151866 states. [2022-07-22 20:56:02,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151866 to 97446. [2022-07-22 20:56:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97446 states, 90116 states have (on average 1.5467952416884905) internal successors, (139391), 90373 states have internal predecessors, (139391), 5531 states have call successors, (5531), 1542 states have call predecessors, (5531), 1798 states have return successors, (12348), 5786 states have call predecessors, (12348), 5531 states have call successors, (12348) [2022-07-22 20:56:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97446 states to 97446 states and 157270 transitions. [2022-07-22 20:56:03,584 INFO L78 Accepts]: Start accepts. Automaton has 97446 states and 157270 transitions. Word has length 189 [2022-07-22 20:56:03,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:56:03,585 INFO L495 AbstractCegarLoop]: Abstraction has 97446 states and 157270 transitions. [2022-07-22 20:56:03,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:56:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 97446 states and 157270 transitions. [2022-07-22 20:56:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:56:03,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:56:03,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:56:03,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 20:56:03,621 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:56:03,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:56:03,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1612855940, now seen corresponding path program 1 times [2022-07-22 20:56:03,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:56:03,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137353120] [2022-07-22 20:56:03,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:56:03,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:56:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:56:03,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:56:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:56:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:56:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:56:03,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:56:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:56:03,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:56:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:56:03,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:56:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:56:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:56:03,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:56:03,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137353120] [2022-07-22 20:56:03,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137353120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:56:03,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:56:03,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:56:03,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234368930] [2022-07-22 20:56:03,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:56:03,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:56:03,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:56:03,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:56:03,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:56:03,766 INFO L87 Difference]: Start difference. First operand 97446 states and 157270 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:57:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:57:00,594 INFO L93 Difference]: Finished difference Result 394824 states and 641175 transitions. [2022-07-22 20:57:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:57:00,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 189 [2022-07-22 20:57:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:57:01,994 INFO L225 Difference]: With dead ends: 394824 [2022-07-22 20:57:01,994 INFO L226 Difference]: Without dead ends: 297400 [2022-07-22 20:57:02,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:57:02,324 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 1764 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 3735 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1783 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:57:02,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1783 Valid, 3176 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 3735 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 20:57:02,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297400 states. [2022-07-22 20:57:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297400 to 194471. [2022-07-22 20:57:26,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194471 states, 180101 states have (on average 1.5479369909106557) internal successors, (278785), 180614 states have internal predecessors, (278785), 10779 states have call successors, (10779), 3078 states have call predecessors, (10779), 3590 states have return successors, (30974), 11290 states have call predecessors, (30974), 10779 states have call successors, (30974) [2022-07-22 20:57:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194471 states to 194471 states and 320538 transitions. [2022-07-22 20:57:27,493 INFO L78 Accepts]: Start accepts. Automaton has 194471 states and 320538 transitions. Word has length 189 [2022-07-22 20:57:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:57:27,493 INFO L495 AbstractCegarLoop]: Abstraction has 194471 states and 320538 transitions. [2022-07-22 20:57:27,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:57:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 194471 states and 320538 transitions. [2022-07-22 20:57:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:57:27,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:57:27,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:57:27,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 20:57:27,547 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:57:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:57:27,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1226993538, now seen corresponding path program 1 times [2022-07-22 20:57:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:57:27,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737543296] [2022-07-22 20:57:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:57:27,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:57:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:57:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:57:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:57:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:57:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:57:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 20:57:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:57:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 20:57:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:57:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:57:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:57:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:57:27,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:57:27,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737543296] [2022-07-22 20:57:27,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737543296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:57:27,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:57:27,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:57:27,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335421707] [2022-07-22 20:57:27,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:57:27,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:57:27,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:57:27,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:57:27,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:57:27,675 INFO L87 Difference]: Start difference. First operand 194471 states and 320538 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)