./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5202e6cfdb0072b2d97423b078e60556fe6d43d8002548ceef037df7f02499eb --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:36:10,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:36:10,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:36:10,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:36:10,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:36:10,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:36:10,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:36:10,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:36:10,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:36:10,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:36:10,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:36:10,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:36:10,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:36:10,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:36:10,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:36:10,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:36:10,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:36:10,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:36:10,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:36:10,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:36:10,611 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:36:10,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:36:10,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:36:10,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:36:10,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:36:10,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:36:10,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:36:10,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:36:10,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:36:10,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:36:10,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:36:10,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:36:10,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:36:10,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:36:10,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:36:10,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:36:10,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:36:10,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:36:10,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:36:10,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:36:10,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:36:10,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:36:10,629 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:36:10,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:36:10,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:36:10,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:36:10,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:36:10,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:36:10,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:36:10,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:36:10,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:36:10,655 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:36:10,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:36:10,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:36:10,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:36:10,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:36:10,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:36:10,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:36:10,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:36:10,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:36:10,657 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:36:10,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:36:10,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:36:10,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:36:10,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:36:10,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:36:10,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:36:10,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:36:10,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:36:10,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:36:10,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:36:10,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:36:10,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:36:10,659 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:36:10,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:36:10,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:36:10,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5202e6cfdb0072b2d97423b078e60556fe6d43d8002548ceef037df7f02499eb [2022-07-12 09:36:10,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:36:10,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:36:10,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:36:10,834 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:36:10,835 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:36:10,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c [2022-07-12 09:36:10,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df819cfed/74fe19176e904b58b3ac251031c41c90/FLAG15236fa76 [2022-07-12 09:36:11,274 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:36:11,275 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c [2022-07-12 09:36:11,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df819cfed/74fe19176e904b58b3ac251031c41c90/FLAG15236fa76 [2022-07-12 09:36:11,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df819cfed/74fe19176e904b58b3ac251031c41c90 [2022-07-12 09:36:11,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:36:11,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:36:11,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:36:11,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:36:11,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:36:11,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f72b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11, skipping insertion in model container [2022-07-12 09:36:11,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:36:11,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:36:11,478 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.08.cil-1.c[911,924] [2022-07-12 09:36:11,515 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.08.cil-1.c[8416,8429] [2022-07-12 09:36:11,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:36:11,562 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:36:11,569 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.08.cil-1.c[911,924] [2022-07-12 09:36:11,581 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.08.cil-1.c[8416,8429] [2022-07-12 09:36:11,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:36:11,622 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:36:11,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11 WrapperNode [2022-07-12 09:36:11,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:36:11,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:36:11,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:36:11,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:36:11,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,671 INFO L137 Inliner]: procedures = 71, calls = 85, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 846 [2022-07-12 09:36:11,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:36:11,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:36:11,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:36:11,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:36:11,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:36:11,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:36:11,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:36:11,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:36:11,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (1/1) ... [2022-07-12 09:36:11,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:36:11,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:36:11,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:36:11,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:36:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:36:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:36:11,812 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:36:11,812 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:36:11,816 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:36:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:36:11,816 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:36:11,816 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:36:11,817 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:36:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:36:11,817 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:36:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:36:11,817 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:36:11,817 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:36:11,817 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:36:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:36:11,818 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:36:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:36:11,818 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:36:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:36:11,818 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:36:11,818 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:36:11,818 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:36:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:36:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:36:11,819 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:36:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:36:11,819 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:36:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:36:11,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:36:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:36:11,820 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:36:11,951 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:36:11,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:36:12,422 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-12 09:36:12,422 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; [2022-07-12 09:36:12,469 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:36:12,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:36:12,480 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-12 09:36:12,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:36:12 BoogieIcfgContainer [2022-07-12 09:36:12,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:36:12,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:36:12,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:36:12,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:36:12,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:36:11" (1/3) ... [2022-07-12 09:36:12,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e16d8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:36:12, skipping insertion in model container [2022-07-12 09:36:12,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:36:11" (2/3) ... [2022-07-12 09:36:12,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e16d8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:36:12, skipping insertion in model container [2022-07-12 09:36:12,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:36:12" (3/3) ... [2022-07-12 09:36:12,489 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.08.cil-1.c [2022-07-12 09:36:12,498 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:36:12,498 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:36:12,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:36:12,543 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@3dd9e765, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@15a5356b [2022-07-12 09:36:12,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:36:12,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 399 states, 344 states have (on average 1.619186046511628) internal successors, (557), 350 states have internal predecessors, (557), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-12 09:36:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:36:12,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:12,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:36:12,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:12,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:12,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1055313032, now seen corresponding path program 1 times [2022-07-12 09:36:12,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:12,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189494237] [2022-07-12 09:36:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:12,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:36:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:36:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:12,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:12,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189494237] [2022-07-12 09:36:12,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189494237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:12,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:12,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:36:12,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052247093] [2022-07-12 09:36:12,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:12,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:36:12,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:36:12,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:36:12,873 INFO L87 Difference]: Start difference. First operand has 399 states, 344 states have (on average 1.619186046511628) internal successors, (557), 350 states have internal predecessors, (557), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:36:13,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:13,742 INFO L93 Difference]: Finished difference Result 925 states and 1461 transitions. [2022-07-12 09:36:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:36:13,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:36:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:13,754 INFO L225 Difference]: With dead ends: 925 [2022-07-12 09:36:13,754 INFO L226 Difference]: Without dead ends: 540 [2022-07-12 09:36:13,758 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 [2022-07-12 09:36:13,760 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 752 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:13,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 2273 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:36:13,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-12 09:36:13,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 501. [2022-07-12 09:36:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 426 states have (on average 1.5070422535211268) internal successors, (642), 432 states have internal predecessors, (642), 51 states have call successors, (51), 21 states have call predecessors, (51), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2022-07-12 09:36:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 747 transitions. [2022-07-12 09:36:13,817 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 747 transitions. Word has length 65 [2022-07-12 09:36:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:13,818 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 747 transitions. [2022-07-12 09:36:13,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:36:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 747 transitions. [2022-07-12 09:36:13,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:36:13,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:13,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:36:13,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:36:13,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:13,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:13,821 INFO L85 PathProgramCache]: Analyzing trace with hash 623575608, now seen corresponding path program 1 times [2022-07-12 09:36:13,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:13,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573985424] [2022-07-12 09:36:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:13,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:36:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:36:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:13,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:13,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573985424] [2022-07-12 09:36:13,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573985424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:13,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:13,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:36:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836938017] [2022-07-12 09:36:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:13,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:36:13,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:13,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:36:13,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:36:13,929 INFO L87 Difference]: Start difference. First operand 501 states and 747 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:36:14,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:14,781 INFO L93 Difference]: Finished difference Result 898 states and 1313 transitions. [2022-07-12 09:36:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:36:14,781 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:36:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:14,785 INFO L225 Difference]: With dead ends: 898 [2022-07-12 09:36:14,785 INFO L226 Difference]: Without dead ends: 689 [2022-07-12 09:36:14,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:36:14,787 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1426 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:14,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 2034 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:36:14,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-07-12 09:36:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 613. [2022-07-12 09:36:14,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 516 states have (on average 1.4883720930232558) internal successors, (768), 524 states have internal predecessors, (768), 64 states have call successors, (64), 28 states have call predecessors, (64), 31 states have return successors, (75), 64 states have call predecessors, (75), 62 states have call successors, (75) [2022-07-12 09:36:14,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 907 transitions. [2022-07-12 09:36:14,814 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 907 transitions. Word has length 65 [2022-07-12 09:36:14,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:14,814 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 907 transitions. [2022-07-12 09:36:14,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:36:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 907 transitions. [2022-07-12 09:36:14,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:36:14,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:14,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:36:14,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:36:14,817 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:14,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:14,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1405010502, now seen corresponding path program 1 times [2022-07-12 09:36:14,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:14,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713160823] [2022-07-12 09:36:14,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:14,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:14,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:36:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:36:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:14,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:14,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713160823] [2022-07-12 09:36:14,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713160823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:14,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:14,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:14,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694007937] [2022-07-12 09:36:14,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:14,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:14,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:14,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:14,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:14,877 INFO L87 Difference]: Start difference. First operand 613 states and 907 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:36:15,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:15,488 INFO L93 Difference]: Finished difference Result 1285 states and 1849 transitions. [2022-07-12 09:36:15,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:36:15,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-12 09:36:15,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:15,492 INFO L225 Difference]: With dead ends: 1285 [2022-07-12 09:36:15,492 INFO L226 Difference]: Without dead ends: 970 [2022-07-12 09:36:15,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:36:15,494 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 1529 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:15,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 1599 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:36:15,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-07-12 09:36:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 894. [2022-07-12 09:36:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 742 states have (on average 1.4487870619946093) internal successors, (1075), 754 states have internal predecessors, (1075), 94 states have call successors, (94), 49 states have call predecessors, (94), 56 states have return successors, (113), 94 states have call predecessors, (113), 92 states have call successors, (113) [2022-07-12 09:36:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1282 transitions. [2022-07-12 09:36:15,524 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1282 transitions. Word has length 65 [2022-07-12 09:36:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:15,525 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1282 transitions. [2022-07-12 09:36:15,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:36:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1282 transitions. [2022-07-12 09:36:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:36:15,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:15,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:36:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:36:15,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:15,527 INFO L85 PathProgramCache]: Analyzing trace with hash 603910498, now seen corresponding path program 1 times [2022-07-12 09:36:15,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:15,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936133477] [2022-07-12 09:36:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:15,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:15,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:15,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:36:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:36:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:15,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:36:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:15,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:15,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936133477] [2022-07-12 09:36:15,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936133477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:15,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:15,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:36:15,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936845340] [2022-07-12 09:36:15,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:15,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:36:15,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:15,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:36:15,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:36:15,614 INFO L87 Difference]: Start difference. First operand 894 states and 1282 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) [2022-07-12 09:36:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:16,410 INFO L93 Difference]: Finished difference Result 1568 states and 2218 transitions. [2022-07-12 09:36:16,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:36:16,411 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 [2022-07-12 09:36:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:16,416 INFO L225 Difference]: With dead ends: 1568 [2022-07-12 09:36:16,417 INFO L226 Difference]: Without dead ends: 972 [2022-07-12 09:36:16,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:36:16,425 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 506 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:16,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 2574 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:36:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-07-12 09:36:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 909. [2022-07-12 09:36:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 754 states have (on average 1.4376657824933687) internal successors, (1084), 766 states have internal predecessors, (1084), 94 states have call successors, (94), 49 states have call predecessors, (94), 59 states have return successors, (116), 97 states have call predecessors, (116), 92 states have call successors, (116) [2022-07-12 09:36:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1294 transitions. [2022-07-12 09:36:16,484 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1294 transitions. Word has length 66 [2022-07-12 09:36:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:16,485 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 1294 transitions. [2022-07-12 09:36:16,485 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) [2022-07-12 09:36:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1294 transitions. [2022-07-12 09:36:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:36:16,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:16,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:36:16,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:36:16,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:16,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash -425448800, now seen corresponding path program 1 times [2022-07-12 09:36:16,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:16,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030592631] [2022-07-12 09:36:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:16,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:36:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 09:36:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:36:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:16,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:16,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030592631] [2022-07-12 09:36:16,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030592631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:16,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:16,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:36:16,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025194867] [2022-07-12 09:36:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:16,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:36:16,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:16,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:36:16,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:36:16,606 INFO L87 Difference]: Start difference. First operand 909 states and 1294 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:36:17,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:17,921 INFO L93 Difference]: Finished difference Result 3114 states and 4415 transitions. [2022-07-12 09:36:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:36:17,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-12 09:36:17,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:17,926 INFO L225 Difference]: With dead ends: 3114 [2022-07-12 09:36:17,926 INFO L226 Difference]: Without dead ends: 1272 [2022-07-12 09:36:17,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2022-07-12 09:36:17,932 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 2435 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2459 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:17,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2459 Valid, 2341 Invalid, 2230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:36:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-07-12 09:36:17,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1117. [2022-07-12 09:36:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 906 states have (on average 1.3995584988962473) internal successors, (1268), 922 states have internal predecessors, (1268), 124 states have call successors, (124), 70 states have call predecessors, (124), 85 states have return successors, (165), 128 states have call predecessors, (165), 122 states have call successors, (165) [2022-07-12 09:36:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1557 transitions. [2022-07-12 09:36:17,972 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1557 transitions. Word has length 66 [2022-07-12 09:36:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:17,972 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1557 transitions. [2022-07-12 09:36:17,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:36:17,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1557 transitions. [2022-07-12 09:36:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:36:17,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:17,974 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] [2022-07-12 09:36:17,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:36:17,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash 661226175, now seen corresponding path program 1 times [2022-07-12 09:36:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:17,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757794624] [2022-07-12 09:36:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:17,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:36:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:36:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:36:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 09:36:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 09:36:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:36:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:18,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:18,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757794624] [2022-07-12 09:36:18,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757794624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:18,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:18,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:36:18,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954480137] [2022-07-12 09:36:18,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:18,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:36:18,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:18,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:36:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:36:18,069 INFO L87 Difference]: Start difference. First operand 1117 states and 1557 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:36:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:18,776 INFO L93 Difference]: Finished difference Result 2302 states and 3182 transitions. [2022-07-12 09:36:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 09:36:18,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 67 [2022-07-12 09:36:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:18,779 INFO L225 Difference]: With dead ends: 2302 [2022-07-12 09:36:18,779 INFO L226 Difference]: Without dead ends: 278 [2022-07-12 09:36:18,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:36:18,782 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1502 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:18,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1916 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:36:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-12 09:36:18,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-07-12 09:36:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 249 states have (on average 1.5582329317269077) internal successors, (388), 250 states have internal predecessors, (388), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-12 09:36:18,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 432 transitions. [2022-07-12 09:36:18,790 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 432 transitions. Word has length 67 [2022-07-12 09:36:18,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:18,790 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 432 transitions. [2022-07-12 09:36:18,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:36:18,790 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 432 transitions. [2022-07-12 09:36:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:18,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:18,791 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] [2022-07-12 09:36:18,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:36:18,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:18,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1126190140, now seen corresponding path program 1 times [2022-07-12 09:36:18,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:18,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455076142] [2022-07-12 09:36:18,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:18,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:18,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:18,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455076142] [2022-07-12 09:36:18,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455076142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:18,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:18,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:36:18,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910091661] [2022-07-12 09:36:18,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:18,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:36:18,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:18,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:36:18,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:36:18,861 INFO L87 Difference]: Start difference. First operand 278 states and 432 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:19,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:19,504 INFO L93 Difference]: Finished difference Result 645 states and 1020 transitions. [2022-07-12 09:36:19,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:36:19,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:19,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:19,506 INFO L225 Difference]: With dead ends: 645 [2022-07-12 09:36:19,506 INFO L226 Difference]: Without dead ends: 376 [2022-07-12 09:36:19,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:36:19,507 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 728 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:19,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 761 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:36:19,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-07-12 09:36:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 278. [2022-07-12 09:36:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 249 states have (on average 1.5542168674698795) internal successors, (387), 250 states have internal predecessors, (387), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-12 09:36:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 431 transitions. [2022-07-12 09:36:19,518 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 431 transitions. Word has length 134 [2022-07-12 09:36:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:19,518 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 431 transitions. [2022-07-12 09:36:19,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 431 transitions. [2022-07-12 09:36:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:19,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:19,519 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] [2022-07-12 09:36:19,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:36:19,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash 179152254, now seen corresponding path program 1 times [2022-07-12 09:36:19,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:19,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552983311] [2022-07-12 09:36:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:19,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:19,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:19,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:19,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:19,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552983311] [2022-07-12 09:36:19,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552983311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:19,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:19,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:36:19,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799281642] [2022-07-12 09:36:19,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:19,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:36:19,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:19,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:36:19,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:36:19,598 INFO L87 Difference]: Start difference. First operand 278 states and 431 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:20,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:20,933 INFO L93 Difference]: Finished difference Result 1006 states and 1598 transitions. [2022-07-12 09:36:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:36:20,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:20,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:20,939 INFO L225 Difference]: With dead ends: 1006 [2022-07-12 09:36:20,939 INFO L226 Difference]: Without dead ends: 745 [2022-07-12 09:36:20,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:36:20,940 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 1093 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:20,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1204 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:36:20,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-07-12 09:36:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 550. [2022-07-12 09:36:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 497 states have (on average 1.567404426559356) internal successors, (779), 499 states have internal predecessors, (779), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-12 09:36:20,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 860 transitions. [2022-07-12 09:36:20,986 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 860 transitions. Word has length 134 [2022-07-12 09:36:20,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:20,986 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 860 transitions. [2022-07-12 09:36:20,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:20,986 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 860 transitions. [2022-07-12 09:36:20,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:20,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:20,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:36:20,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:36:20,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1527351294, now seen corresponding path program 1 times [2022-07-12 09:36:20,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:20,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139939883] [2022-07-12 09:36:20,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:20,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:21,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:21,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:21,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:21,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139939883] [2022-07-12 09:36:21,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139939883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:21,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:21,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405042090] [2022-07-12 09:36:21,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:21,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:21,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:21,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:21,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:21,103 INFO L87 Difference]: Start difference. First operand 550 states and 860 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:22,803 INFO L93 Difference]: Finished difference Result 1659 states and 2636 transitions. [2022-07-12 09:36:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:36:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:22,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:22,808 INFO L225 Difference]: With dead ends: 1659 [2022-07-12 09:36:22,808 INFO L226 Difference]: Without dead ends: 1126 [2022-07-12 09:36:22,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:36:22,809 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 1106 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:22,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 2086 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:36:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-07-12 09:36:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 803. [2022-07-12 09:36:22,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 726 states have (on average 1.5606060606060606) internal successors, (1133), 729 states have internal predecessors, (1133), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-07-12 09:36:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1250 transitions. [2022-07-12 09:36:22,861 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1250 transitions. Word has length 134 [2022-07-12 09:36:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:22,861 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1250 transitions. [2022-07-12 09:36:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1250 transitions. [2022-07-12 09:36:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:22,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:22,862 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] [2022-07-12 09:36:22,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:36:22,863 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:22,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:22,863 INFO L85 PathProgramCache]: Analyzing trace with hash 474534976, now seen corresponding path program 1 times [2022-07-12 09:36:22,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:22,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820242071] [2022-07-12 09:36:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:22,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:22,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:22,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820242071] [2022-07-12 09:36:22,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820242071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:22,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:22,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:22,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186157380] [2022-07-12 09:36:22,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:22,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:22,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:22,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:22,963 INFO L87 Difference]: Start difference. First operand 803 states and 1250 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:24,519 INFO L93 Difference]: Finished difference Result 2621 states and 4154 transitions. [2022-07-12 09:36:24,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:36:24,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:24,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:24,556 INFO L225 Difference]: With dead ends: 2621 [2022-07-12 09:36:24,556 INFO L226 Difference]: Without dead ends: 1835 [2022-07-12 09:36:24,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:36:24,558 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1106 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 2296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:24,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 2076 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:36:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-07-12 09:36:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1310. [2022-07-12 09:36:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1185 states have (on average 1.5544303797468355) internal successors, (1842), 1190 states have internal predecessors, (1842), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-12 09:36:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2035 transitions. [2022-07-12 09:36:24,630 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2035 transitions. Word has length 134 [2022-07-12 09:36:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:24,631 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2035 transitions. [2022-07-12 09:36:24,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:24,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2035 transitions. [2022-07-12 09:36:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:24,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:24,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:36:24,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:36:24,633 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:24,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:24,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2093287358, now seen corresponding path program 1 times [2022-07-12 09:36:24,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:24,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495799773] [2022-07-12 09:36:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:24,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:24,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:24,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:24,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:24,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495799773] [2022-07-12 09:36:24,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495799773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:24,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:24,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:24,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854637151] [2022-07-12 09:36:24,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:24,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:24,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:24,725 INFO L87 Difference]: Start difference. First operand 1310 states and 2035 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:26,487 INFO L93 Difference]: Finished difference Result 4469 states and 7055 transitions. [2022-07-12 09:36:26,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:36:26,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:26,497 INFO L225 Difference]: With dead ends: 4469 [2022-07-12 09:36:26,497 INFO L226 Difference]: Without dead ends: 3176 [2022-07-12 09:36:26,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:36:26,501 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 1178 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:26,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1440 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:36:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2022-07-12 09:36:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2330. [2022-07-12 09:36:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2109 states have (on average 1.5504978662873399) internal successors, (3270), 2118 states have internal predecessors, (3270), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-12 09:36:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3621 transitions. [2022-07-12 09:36:26,607 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3621 transitions. Word has length 134 [2022-07-12 09:36:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:26,608 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3621 transitions. [2022-07-12 09:36:26,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3621 transitions. [2022-07-12 09:36:26,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:26,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:26,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:36:26,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:36:26,610 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:26,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash 554316996, now seen corresponding path program 1 times [2022-07-12 09:36:26,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:26,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921497088] [2022-07-12 09:36:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:26,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:26,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:26,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921497088] [2022-07-12 09:36:26,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921497088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:26,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:26,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:26,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876238850] [2022-07-12 09:36:26,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:26,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:26,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:26,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:26,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:26,740 INFO L87 Difference]: Start difference. First operand 2330 states and 3621 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:27,605 INFO L93 Difference]: Finished difference Result 5504 states and 8694 transitions. [2022-07-12 09:36:27,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:36:27,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:27,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:27,615 INFO L225 Difference]: With dead ends: 5504 [2022-07-12 09:36:27,615 INFO L226 Difference]: Without dead ends: 3191 [2022-07-12 09:36:27,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:36:27,619 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 911 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:27,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 983 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:36:27,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2022-07-12 09:36:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 2330. [2022-07-12 09:36:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2109 states have (on average 1.5462304409672831) internal successors, (3261), 2118 states have internal predecessors, (3261), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-12 09:36:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3612 transitions. [2022-07-12 09:36:27,744 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3612 transitions. Word has length 134 [2022-07-12 09:36:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:27,745 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3612 transitions. [2022-07-12 09:36:27,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3612 transitions. [2022-07-12 09:36:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:27,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:27,747 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] [2022-07-12 09:36:27,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:36:27,747 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:27,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1577033726, now seen corresponding path program 1 times [2022-07-12 09:36:27,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:27,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333224896] [2022-07-12 09:36:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:27,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:27,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:27,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:27,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:27,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:27,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:27,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:27,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:27,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333224896] [2022-07-12 09:36:27,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333224896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:27,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:27,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:27,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415683936] [2022-07-12 09:36:27,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:27,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:27,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:27,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:27,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:27,838 INFO L87 Difference]: Start difference. First operand 2330 states and 3612 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:28,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:28,921 INFO L93 Difference]: Finished difference Result 5494 states and 8647 transitions. [2022-07-12 09:36:28,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:36:28,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:28,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:28,931 INFO L225 Difference]: With dead ends: 5494 [2022-07-12 09:36:28,931 INFO L226 Difference]: Without dead ends: 3181 [2022-07-12 09:36:28,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:36:28,936 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 791 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:28,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1122 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:36:28,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2022-07-12 09:36:29,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2330. [2022-07-12 09:36:29,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2109 states have (on average 1.5419630156472262) internal successors, (3252), 2118 states have internal predecessors, (3252), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-12 09:36:29,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3603 transitions. [2022-07-12 09:36:29,058 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3603 transitions. Word has length 134 [2022-07-12 09:36:29,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:29,058 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3603 transitions. [2022-07-12 09:36:29,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3603 transitions. [2022-07-12 09:36:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:29,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:29,061 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] [2022-07-12 09:36:29,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:36:29,061 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:29,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:29,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1679348996, now seen corresponding path program 1 times [2022-07-12 09:36:29,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:29,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772747733] [2022-07-12 09:36:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:29,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:29,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:29,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772747733] [2022-07-12 09:36:29,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772747733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:29,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:29,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:29,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945445422] [2022-07-12 09:36:29,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:29,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:29,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:29,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:29,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:29,143 INFO L87 Difference]: Start difference. First operand 2330 states and 3603 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:30,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:30,027 INFO L93 Difference]: Finished difference Result 5484 states and 8600 transitions. [2022-07-12 09:36:30,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:36:30,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:30,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:30,071 INFO L225 Difference]: With dead ends: 5484 [2022-07-12 09:36:30,071 INFO L226 Difference]: Without dead ends: 3171 [2022-07-12 09:36:30,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:36:30,077 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 907 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:30,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 975 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:36:30,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-07-12 09:36:30,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2330. [2022-07-12 09:36:30,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2109 states have (on average 1.5376955903271692) internal successors, (3243), 2118 states have internal predecessors, (3243), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-12 09:36:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3594 transitions. [2022-07-12 09:36:30,325 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3594 transitions. Word has length 134 [2022-07-12 09:36:30,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:30,325 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3594 transitions. [2022-07-12 09:36:30,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3594 transitions. [2022-07-12 09:36:30,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:30,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:30,327 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] [2022-07-12 09:36:30,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:36:30,327 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash -293816382, now seen corresponding path program 1 times [2022-07-12 09:36:30,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:30,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224775048] [2022-07-12 09:36:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:30,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:30,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:30,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:30,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:30,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:30,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224775048] [2022-07-12 09:36:30,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224775048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:30,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:30,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:30,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937899146] [2022-07-12 09:36:30,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:30,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:30,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:30,418 INFO L87 Difference]: Start difference. First operand 2330 states and 3594 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:32,364 INFO L93 Difference]: Finished difference Result 8145 states and 12699 transitions. [2022-07-12 09:36:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:36:32,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:32,386 INFO L225 Difference]: With dead ends: 8145 [2022-07-12 09:36:32,386 INFO L226 Difference]: Without dead ends: 5832 [2022-07-12 09:36:32,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:36:32,393 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 1079 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:32,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 2045 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:36:32,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5832 states. [2022-07-12 09:36:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5832 to 4402. [2022-07-12 09:36:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4402 states, 3989 states have (on average 1.531962897969416) internal successors, (6111), 4006 states have internal predecessors, (6111), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-07-12 09:36:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6796 transitions. [2022-07-12 09:36:32,667 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6796 transitions. Word has length 134 [2022-07-12 09:36:32,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:32,668 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 6796 transitions. [2022-07-12 09:36:32,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:32,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6796 transitions. [2022-07-12 09:36:32,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:32,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:32,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:36:32,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:36:32,673 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:32,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1859290436, now seen corresponding path program 1 times [2022-07-12 09:36:32,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:32,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817573675] [2022-07-12 09:36:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:32,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:32,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:32,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817573675] [2022-07-12 09:36:32,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817573675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:32,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:32,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:32,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4089830] [2022-07-12 09:36:32,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:32,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:32,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:32,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:32,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:32,777 INFO L87 Difference]: Start difference. First operand 4402 states and 6796 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:35,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:35,591 INFO L93 Difference]: Finished difference Result 17495 states and 27237 transitions. [2022-07-12 09:36:35,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:36:35,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:35,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:35,665 INFO L225 Difference]: With dead ends: 17495 [2022-07-12 09:36:35,679 INFO L226 Difference]: Without dead ends: 13110 [2022-07-12 09:36:35,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:36:35,690 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 1161 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:35,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 2166 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2519 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 09:36:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13110 states. [2022-07-12 09:36:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 8507. [2022-07-12 09:36:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8507 states, 7726 states have (on average 1.5305462076106653) internal successors, (11825), 7759 states have internal predecessors, (11825), 550 states have call successors, (550), 198 states have call predecessors, (550), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2022-07-12 09:36:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8507 states to 8507 states and 13200 transitions. [2022-07-12 09:36:36,257 INFO L78 Accepts]: Start accepts. Automaton has 8507 states and 13200 transitions. Word has length 134 [2022-07-12 09:36:36,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:36,258 INFO L495 AbstractCegarLoop]: Abstraction has 8507 states and 13200 transitions. [2022-07-12 09:36:36,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 8507 states and 13200 transitions. [2022-07-12 09:36:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:36,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:36,263 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] [2022-07-12 09:36:36,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:36:36,263 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:36,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1236008834, now seen corresponding path program 1 times [2022-07-12 09:36:36,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:36,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506430123] [2022-07-12 09:36:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:36,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:36,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:36,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:36,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:36,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506430123] [2022-07-12 09:36:36,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506430123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:36,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:36,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:36,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885545825] [2022-07-12 09:36:36,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:36,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:36,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:36,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:36,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:36,352 INFO L87 Difference]: Start difference. First operand 8507 states and 13200 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:40,056 INFO L93 Difference]: Finished difference Result 33726 states and 52747 transitions. [2022-07-12 09:36:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:36:40,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:40,121 INFO L225 Difference]: With dead ends: 33726 [2022-07-12 09:36:40,121 INFO L226 Difference]: Without dead ends: 25236 [2022-07-12 09:36:40,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:36:40,146 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 1370 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:40,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 2019 Invalid, 2193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:36:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25236 states. [2022-07-12 09:36:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25236 to 16540. [2022-07-12 09:36:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16540 states, 15039 states have (on average 1.5300884367311656) internal successors, (23011), 15104 states have internal predecessors, (23011), 1046 states have call successors, (1046), 390 states have call predecessors, (1046), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2022-07-12 09:36:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16540 states to 16540 states and 25896 transitions. [2022-07-12 09:36:41,477 INFO L78 Accepts]: Start accepts. Automaton has 16540 states and 25896 transitions. Word has length 134 [2022-07-12 09:36:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:41,477 INFO L495 AbstractCegarLoop]: Abstraction has 16540 states and 25896 transitions. [2022-07-12 09:36:41,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 16540 states and 25896 transitions. [2022-07-12 09:36:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:41,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:41,485 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] [2022-07-12 09:36:41,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:36:41,486 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:41,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1354450308, now seen corresponding path program 1 times [2022-07-12 09:36:41,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:41,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740686359] [2022-07-12 09:36:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:41,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:41,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:41,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:41,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:41,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:41,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:41,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740686359] [2022-07-12 09:36:41,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740686359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:41,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:41,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:41,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143807092] [2022-07-12 09:36:41,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:41,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:41,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:41,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:41,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:41,558 INFO L87 Difference]: Start difference. First operand 16540 states and 25896 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:47,270 INFO L93 Difference]: Finished difference Result 64155 states and 101261 transitions. [2022-07-12 09:36:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:36:47,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:36:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:47,395 INFO L225 Difference]: With dead ends: 64155 [2022-07-12 09:36:47,396 INFO L226 Difference]: Without dead ends: 47632 [2022-07-12 09:36:47,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:36:47,441 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1351 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:47,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 1408 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:36:47,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47632 states. [2022-07-12 09:36:49,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47632 to 32798. [2022-07-12 09:36:49,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32798 states, 29889 states have (on average 1.5323028538927363) internal successors, (45799), 30018 states have internal predecessors, (45799), 2006 states have call successors, (2006), 774 states have call predecessors, (2006), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2022-07-12 09:36:49,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32798 states to 32798 states and 52126 transitions. [2022-07-12 09:36:49,951 INFO L78 Accepts]: Start accepts. Automaton has 32798 states and 52126 transitions. Word has length 134 [2022-07-12 09:36:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:36:49,951 INFO L495 AbstractCegarLoop]: Abstraction has 32798 states and 52126 transitions. [2022-07-12 09:36:49,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:36:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 32798 states and 52126 transitions. [2022-07-12 09:36:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:36:49,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:36:49,966 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] [2022-07-12 09:36:49,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:36:49,967 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:36:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:36:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash -678943738, now seen corresponding path program 1 times [2022-07-12 09:36:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:36:49,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406236118] [2022-07-12 09:36:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:36:49,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:36:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:49,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:36:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:50,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:36:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:50,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:36:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:50,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:36:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:36:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:36:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:36:50,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:36:50,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406236118] [2022-07-12 09:36:50,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406236118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:36:50,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:36:50,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:36:50,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504394751] [2022-07-12 09:36:50,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:36:50,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:36:50,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:36:50,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:36:50,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:36:50,064 INFO L87 Difference]: Start difference. First operand 32798 states and 52126 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:37:00,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:00,479 INFO L93 Difference]: Finished difference Result 125275 states and 200597 transitions. [2022-07-12 09:37:00,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:37:00,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:37:00,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:00,813 INFO L225 Difference]: With dead ends: 125275 [2022-07-12 09:37:00,813 INFO L226 Difference]: Without dead ends: 92494 [2022-07-12 09:37:01,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:37:01,042 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1248 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:01,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 2009 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:37:01,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92494 states. [2022-07-12 09:37:05,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92494 to 65247. [2022-07-12 09:37:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65247 states, 59586 states have (on average 1.5344711845064276) internal successors, (91433), 59843 states have internal predecessors, (91433), 3862 states have call successors, (3862), 1542 states have call predecessors, (3862), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2022-07-12 09:37:05,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65247 states to 65247 states and 105974 transitions. [2022-07-12 09:37:06,001 INFO L78 Accepts]: Start accepts. Automaton has 65247 states and 105974 transitions. Word has length 134 [2022-07-12 09:37:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:06,001 INFO L495 AbstractCegarLoop]: Abstraction has 65247 states and 105974 transitions. [2022-07-12 09:37:06,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:37:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 65247 states and 105974 transitions. [2022-07-12 09:37:06,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:37:06,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:06,265 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] [2022-07-12 09:37:06,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:37:06,265 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1749314884, now seen corresponding path program 1 times [2022-07-12 09:37:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:06,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722904588] [2022-07-12 09:37:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:06,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:37:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:37:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:37:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:06,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:06,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722904588] [2022-07-12 09:37:06,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722904588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:06,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:06,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:06,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310180870] [2022-07-12 09:37:06,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:06,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:06,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:06,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:06,373 INFO L87 Difference]: Start difference. First operand 65247 states and 105974 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:37:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:37:14,560 INFO L93 Difference]: Finished difference Result 149120 states and 247519 transitions. [2022-07-12 09:37:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:37:14,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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 134 [2022-07-12 09:37:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:37:14,957 INFO L225 Difference]: With dead ends: 149120 [2022-07-12 09:37:14,957 INFO L226 Difference]: Without dead ends: 83890 [2022-07-12 09:37:15,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:37:15,080 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 791 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:37:15,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1093 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:37:15,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83890 states. [2022-07-12 09:37:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83890 to 65247. [2022-07-12 09:37:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65247 states, 59586 states have (on average 1.5301580908267043) internal successors, (91176), 59843 states have internal predecessors, (91176), 3862 states have call successors, (3862), 1542 states have call predecessors, (3862), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2022-07-12 09:37:20,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65247 states to 65247 states and 105717 transitions. [2022-07-12 09:37:20,482 INFO L78 Accepts]: Start accepts. Automaton has 65247 states and 105717 transitions. Word has length 134 [2022-07-12 09:37:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:37:20,482 INFO L495 AbstractCegarLoop]: Abstraction has 65247 states and 105717 transitions. [2022-07-12 09:37:20,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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) [2022-07-12 09:37:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 65247 states and 105717 transitions. [2022-07-12 09:37:20,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 09:37:20,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:37:20,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:37:20,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:37:20,512 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:37:20,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:37:20,512 INFO L85 PathProgramCache]: Analyzing trace with hash 442172486, now seen corresponding path program 1 times [2022-07-12 09:37:20,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:37:20,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049537160] [2022-07-12 09:37:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:37:20,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:37:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:37:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 09:37:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:37:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:37:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 09:37:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:37:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:37:20,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:37:20,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049537160] [2022-07-12 09:37:20,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049537160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:37:20,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:37:20,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:37:20,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681906447] [2022-07-12 09:37:20,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:37:20,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:37:20,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:37:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:37:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:37:20,593 INFO L87 Difference]: Start difference. First operand 65247 states and 105717 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (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)