./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 eb692b52 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-?-eb692b5 [2022-07-19 20:37:47,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:37:47,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:37:47,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:37:47,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:37:47,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:37:47,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:37:47,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:37:47,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:37:47,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:37:47,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:37:47,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:37:47,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:37:47,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:37:47,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:37:47,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:37:47,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:37:47,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:37:47,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:37:47,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:37:47,778 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:37:47,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:37:47,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:37:47,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:37:47,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:37:47,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:37:47,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:37:47,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:37:47,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:37:47,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:37:47,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:37:47,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:37:47,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:37:47,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:37:47,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:37:47,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:37:47,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:37:47,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:37:47,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:37:47,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:37:47,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:37:47,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:37:47,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:37:47,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:37:47,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:37:47,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:37:47,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:37:47,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:37:47,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:37:47,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:37:47,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:37:47,805 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:37:47,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:37:47,806 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:37:47,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:37:47,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:37:47,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:37:47,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:37:47,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:37:47,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:37:47,807 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:37:47,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:37:47,807 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:37:47,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:37:47,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:37:47,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:37:47,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:37:47,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:37:47,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:37:47,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:37:47,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:37:47,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:37:47,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:37:47,809 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:37:47,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:37:47,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:37:47,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5202e6cfdb0072b2d97423b078e60556fe6d43d8002548ceef037df7f02499eb [2022-07-19 20:37:47,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:37:48,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:37:48,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:37:48,017 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:37:48,018 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:37:48,020 INFO L432 ainManager$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 [2022-07-19 20:37:48,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f014822/fba864b41db7432dba6c805a192e861c/FLAG6adbe6321 [2022-07-19 20:37:48,452 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:37:48,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c [2022-07-19 20:37:48,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f014822/fba864b41db7432dba6c805a192e861c/FLAG6adbe6321 [2022-07-19 20:37:48,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f014822/fba864b41db7432dba6c805a192e861c [2022-07-19 20:37:48,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:37:48,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:37:48,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:37:48,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:37:48,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:37:48,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c53366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48, skipping insertion in model container [2022-07-19 20:37:48,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:37:48,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:37:48,668 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.08.cil-1.c[911,924] [2022-07-19 20:37:48,702 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] [2022-07-19 20:37:48,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:37:48,755 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:37:48,763 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] [2022-07-19 20:37:48,775 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] [2022-07-19 20:37:48,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:37:48,815 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:37:48,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48 WrapperNode [2022-07-19 20:37:48,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:37:48,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:37:48,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:37:48,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:37:48,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,872 INFO L137 Inliner]: procedures = 71, calls = 85, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 846 [2022-07-19 20:37:48,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:37:48,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:37:48,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:37:48,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:37:48,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:37:48,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:37:48,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:37:48,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:37:48,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (1/1) ... [2022-07-19 20:37:48,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:37:48,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:37:48,945 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) [2022-07-19 20:37:48,970 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 [2022-07-19 20:37:48,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:37:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:37:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:37:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:37:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:37:48,998 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:37:48,998 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:37:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:37:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:37:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:37:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:37:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:37:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:37:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:37:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:37:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:37:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:37:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:37:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:37:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:37:49,000 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:37:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:37:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:37:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:37:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:37:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:37:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:37:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:37:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:37:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:37:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:37:49,002 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:37:49,139 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:37:49,141 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:37:49,576 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-19 20:37:49,576 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; [2022-07-19 20:37:49,643 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:37:49,651 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:37:49,652 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-19 20:37:49,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:37:49 BoogieIcfgContainer [2022-07-19 20:37:49,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:37:49,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:37:49,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:37:49,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:37:49,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:37:48" (1/3) ... [2022-07-19 20:37:49,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f125e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:37:49, skipping insertion in model container [2022-07-19 20:37:49,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:48" (2/3) ... [2022-07-19 20:37:49,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f125e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:37:49, skipping insertion in model container [2022-07-19 20:37:49,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:37:49" (3/3) ... [2022-07-19 20:37:49,668 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.08.cil-1.c [2022-07-19 20:37:49,680 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:37:49,680 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:37:49,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:37:49,737 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@5f9ec82, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@784354c1 [2022-07-19 20:37:49,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:37:49,743 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) [2022-07-19 20:37:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:37:49,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:49,763 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] [2022-07-19 20:37:49,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:49,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1055313032, now seen corresponding path program 1 times [2022-07-19 20:37:49,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:49,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430946736] [2022-07-19 20:37:49,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:49,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:49,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:37:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:37:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:37:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:50,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:50,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430946736] [2022-07-19 20:37:50,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430946736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:50,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:50,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:37:50,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330913191] [2022-07-19 20:37:50,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:50,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:37:50,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:50,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:37:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:37:50,137 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) [2022-07-19 20:37:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:51,070 INFO L93 Difference]: Finished difference Result 925 states and 1461 transitions. [2022-07-19 20:37:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:37:51,072 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 [2022-07-19 20:37:51,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:51,082 INFO L225 Difference]: With dead ends: 925 [2022-07-19 20:37:51,082 INFO L226 Difference]: Without dead ends: 540 [2022-07-19 20:37:51,086 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 [2022-07-19 20:37:51,089 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 [2022-07-19 20:37:51,089 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] [2022-07-19 20:37:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-19 20:37:51,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 501. [2022-07-19 20:37:51,142 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) [2022-07-19 20:37:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 747 transitions. [2022-07-19 20:37:51,146 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 747 transitions. Word has length 65 [2022-07-19 20:37:51,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:51,146 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 747 transitions. [2022-07-19 20:37:51,146 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) [2022-07-19 20:37:51,159 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 747 transitions. [2022-07-19 20:37:51,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:37:51,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:51,162 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] [2022-07-19 20:37:51,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:37:51,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:51,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:51,163 INFO L85 PathProgramCache]: Analyzing trace with hash 623575608, now seen corresponding path program 1 times [2022-07-19 20:37:51,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:51,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285068410] [2022-07-19 20:37:51,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:51,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:51,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:51,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:51,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:51,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:37:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:37:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:37:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:51,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:51,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285068410] [2022-07-19 20:37:51,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285068410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:51,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:51,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:37:51,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656145385] [2022-07-19 20:37:51,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:51,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:37:51,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:51,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:37:51,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:37:51,244 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) [2022-07-19 20:37:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:52,086 INFO L93 Difference]: Finished difference Result 898 states and 1313 transitions. [2022-07-19 20:37:52,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:37:52,087 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 [2022-07-19 20:37:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:52,095 INFO L225 Difference]: With dead ends: 898 [2022-07-19 20:37:52,095 INFO L226 Difference]: Without dead ends: 689 [2022-07-19 20:37:52,098 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 [2022-07-19 20:37:52,099 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1426 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:52,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 2034 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:37:52,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-07-19 20:37:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 613. [2022-07-19 20:37:52,154 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) [2022-07-19 20:37:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 907 transitions. [2022-07-19 20:37:52,159 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 907 transitions. Word has length 65 [2022-07-19 20:37:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:52,159 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 907 transitions. [2022-07-19 20:37:52,160 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) [2022-07-19 20:37:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 907 transitions. [2022-07-19 20:37:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:37:52,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:52,167 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] [2022-07-19 20:37:52,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:37:52,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:52,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1405010502, now seen corresponding path program 1 times [2022-07-19 20:37:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:52,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302387559] [2022-07-19 20:37:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:52,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:37:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:37:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:37:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:52,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:52,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302387559] [2022-07-19 20:37:52,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302387559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:52,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:52,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:52,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909778819] [2022-07-19 20:37:52,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:52,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:52,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:52,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:52,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:52,262 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) [2022-07-19 20:37:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:52,826 INFO L93 Difference]: Finished difference Result 1285 states and 1849 transitions. [2022-07-19 20:37:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:37:52,827 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 [2022-07-19 20:37:52,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:52,831 INFO L225 Difference]: With dead ends: 1285 [2022-07-19 20:37:52,831 INFO L226 Difference]: Without dead ends: 970 [2022-07-19 20:37:52,832 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 [2022-07-19 20:37:52,832 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 [2022-07-19 20:37:52,833 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] [2022-07-19 20:37:52,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-07-19 20:37:52,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 894. [2022-07-19 20:37:52,858 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) [2022-07-19 20:37:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1282 transitions. [2022-07-19 20:37:52,861 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1282 transitions. Word has length 65 [2022-07-19 20:37:52,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:52,862 INFO L495 AbstractCegarLoop]: Abstraction has 894 states and 1282 transitions. [2022-07-19 20:37:52,862 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) [2022-07-19 20:37:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1282 transitions. [2022-07-19 20:37:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:37:52,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:52,863 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] [2022-07-19 20:37:52,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:37:52,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:52,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:52,864 INFO L85 PathProgramCache]: Analyzing trace with hash 603910498, now seen corresponding path program 1 times [2022-07-19 20:37:52,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:52,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007846346] [2022-07-19 20:37:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:52,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:37:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:37:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:37:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:52,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:52,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007846346] [2022-07-19 20:37:52,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007846346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:52,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:52,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:37:52,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347985977] [2022-07-19 20:37:52,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:52,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:37:52,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:52,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:37:52,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:37:52,962 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) [2022-07-19 20:37:53,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:53,733 INFO L93 Difference]: Finished difference Result 1568 states and 2218 transitions. [2022-07-19 20:37:53,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:37:53,734 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 [2022-07-19 20:37:53,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:53,737 INFO L225 Difference]: With dead ends: 1568 [2022-07-19 20:37:53,738 INFO L226 Difference]: Without dead ends: 972 [2022-07-19 20:37:53,739 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 [2022-07-19 20:37:53,740 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 506 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:53,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 2575 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:37:53,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2022-07-19 20:37:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 909. [2022-07-19 20:37:53,767 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) [2022-07-19 20:37:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1294 transitions. [2022-07-19 20:37:53,770 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1294 transitions. Word has length 66 [2022-07-19 20:37:53,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:53,771 INFO L495 AbstractCegarLoop]: Abstraction has 909 states and 1294 transitions. [2022-07-19 20:37:53,771 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) [2022-07-19 20:37:53,771 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1294 transitions. [2022-07-19 20:37:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:37:53,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:53,772 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] [2022-07-19 20:37:53,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:37:53,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:53,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:53,773 INFO L85 PathProgramCache]: Analyzing trace with hash -425448800, now seen corresponding path program 1 times [2022-07-19 20:37:53,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:53,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728847585] [2022-07-19 20:37:53,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:53,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:37:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:37:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:37:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:53,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:53,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728847585] [2022-07-19 20:37:53,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728847585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:53,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:53,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:37:53,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118952668] [2022-07-19 20:37:53,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:53,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:37:53,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:53,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:37:53,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:37:53,865 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) [2022-07-19 20:37:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:55,332 INFO L93 Difference]: Finished difference Result 3114 states and 4415 transitions. [2022-07-19 20:37:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:37:55,332 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 [2022-07-19 20:37:55,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:55,337 INFO L225 Difference]: With dead ends: 3114 [2022-07-19 20:37:55,338 INFO L226 Difference]: Without dead ends: 1272 [2022-07-19 20:37:55,341 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 [2022-07-19 20:37:55,345 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 2435 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2458 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:55,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2458 Valid, 2343 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:37:55,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-07-19 20:37:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1117. [2022-07-19 20:37:55,402 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) [2022-07-19 20:37:55,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1557 transitions. [2022-07-19 20:37:55,406 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1557 transitions. Word has length 66 [2022-07-19 20:37:55,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:55,406 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1557 transitions. [2022-07-19 20:37:55,406 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) [2022-07-19 20:37:55,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1557 transitions. [2022-07-19 20:37:55,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 20:37:55,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:55,408 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] [2022-07-19 20:37:55,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:37:55,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:55,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:55,409 INFO L85 PathProgramCache]: Analyzing trace with hash 661226175, now seen corresponding path program 1 times [2022-07-19 20:37:55,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:55,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857744923] [2022-07-19 20:37:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:55,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:55,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:55,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:55,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:37:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:37:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:55,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:37:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:55,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:55,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857744923] [2022-07-19 20:37:55,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857744923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:55,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:55,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:37:55,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496914812] [2022-07-19 20:37:55,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:55,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:37:55,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:55,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:37:55,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:37:55,488 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) [2022-07-19 20:37:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:56,257 INFO L93 Difference]: Finished difference Result 2302 states and 3182 transitions. [2022-07-19 20:37:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 20:37:56,258 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 [2022-07-19 20:37:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:56,260 INFO L225 Difference]: With dead ends: 2302 [2022-07-19 20:37:56,260 INFO L226 Difference]: Without dead ends: 278 [2022-07-19 20:37:56,263 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 [2022-07-19 20:37:56,264 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 [2022-07-19 20:37:56,264 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] [2022-07-19 20:37:56,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-19 20:37:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-07-19 20:37:56,271 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) [2022-07-19 20:37:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 432 transitions. [2022-07-19 20:37:56,272 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 432 transitions. Word has length 67 [2022-07-19 20:37:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:56,273 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 432 transitions. [2022-07-19 20:37:56,273 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) [2022-07-19 20:37:56,273 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 432 transitions. [2022-07-19 20:37:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:37:56,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:56,274 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] [2022-07-19 20:37:56,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:37:56,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:56,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:56,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1126190140, now seen corresponding path program 1 times [2022-07-19 20:37:56,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:56,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188464922] [2022-07-19 20:37:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:56,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:37:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:37:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:37:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:37:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:56,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:56,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188464922] [2022-07-19 20:37:56,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188464922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:56,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:56,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:37:56,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897343809] [2022-07-19 20:37:56,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:56,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:37:56,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:56,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:37:56,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:37:56,346 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) [2022-07-19 20:37:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:56,968 INFO L93 Difference]: Finished difference Result 645 states and 1020 transitions. [2022-07-19 20:37:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 20:37:56,968 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 [2022-07-19 20:37:56,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:56,970 INFO L225 Difference]: With dead ends: 645 [2022-07-19 20:37:56,970 INFO L226 Difference]: Without dead ends: 376 [2022-07-19 20:37:56,971 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 [2022-07-19 20:37:56,971 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 728 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-07-19 20:37:56,971 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] [2022-07-19 20:37:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-07-19 20:37:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 278. [2022-07-19 20:37:56,995 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) [2022-07-19 20:37:56,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 431 transitions. [2022-07-19 20:37:56,997 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 431 transitions. Word has length 134 [2022-07-19 20:37:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:56,997 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 431 transitions. [2022-07-19 20:37:56,997 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) [2022-07-19 20:37:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 431 transitions. [2022-07-19 20:37:56,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:37:56,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:56,998 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] [2022-07-19 20:37:56,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:37:56,998 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:56,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:56,999 INFO L85 PathProgramCache]: Analyzing trace with hash 179152254, now seen corresponding path program 1 times [2022-07-19 20:37:56,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:56,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56852026] [2022-07-19 20:37:56,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:56,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:37:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:37:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:57,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:37:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:57,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:37:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:57,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:57,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56852026] [2022-07-19 20:37:57,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56852026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:57,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:57,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:37:57,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620458186] [2022-07-19 20:37:57,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:57,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:37:57,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:57,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:37:57,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:37:57,111 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) [2022-07-19 20:37:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:58,581 INFO L93 Difference]: Finished difference Result 1006 states and 1598 transitions. [2022-07-19 20:37:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:37:58,582 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 [2022-07-19 20:37:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:58,584 INFO L225 Difference]: With dead ends: 1006 [2022-07-19 20:37:58,584 INFO L226 Difference]: Without dead ends: 745 [2022-07-19 20:37:58,585 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 [2022-07-19 20:37:58,586 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, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:58,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1204 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:37:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-07-19 20:37:58,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 550. [2022-07-19 20:37:58,605 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) [2022-07-19 20:37:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 860 transitions. [2022-07-19 20:37:58,607 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 860 transitions. Word has length 134 [2022-07-19 20:37:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:58,608 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 860 transitions. [2022-07-19 20:37:58,608 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) [2022-07-19 20:37:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 860 transitions. [2022-07-19 20:37:58,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:37:58,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:58,609 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] [2022-07-19 20:37:58,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:37:58,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:58,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:58,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1527351294, now seen corresponding path program 1 times [2022-07-19 20:37:58,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:58,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307729377] [2022-07-19 20:37:58,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:58,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:58,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:37:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:37:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:37:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:37:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:58,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:58,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307729377] [2022-07-19 20:37:58,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307729377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:58,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:58,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:58,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219851700] [2022-07-19 20:37:58,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:58,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:58,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:58,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:58,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:58,700 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) [2022-07-19 20:38:00,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:00,537 INFO L93 Difference]: Finished difference Result 1659 states and 2636 transitions. [2022-07-19 20:38:00,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:00,538 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 [2022-07-19 20:38:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:00,541 INFO L225 Difference]: With dead ends: 1659 [2022-07-19 20:38:00,542 INFO L226 Difference]: Without dead ends: 1126 [2022-07-19 20:38:00,543 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 [2022-07-19 20:38:00,545 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 1106 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:00,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 2086 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:38:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-07-19 20:38:00,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 803. [2022-07-19 20:38:00,577 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) [2022-07-19 20:38:00,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1250 transitions. [2022-07-19 20:38:00,579 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1250 transitions. Word has length 134 [2022-07-19 20:38:00,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:00,580 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1250 transitions. [2022-07-19 20:38:00,580 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) [2022-07-19 20:38:00,580 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1250 transitions. [2022-07-19 20:38:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:00,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:00,581 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] [2022-07-19 20:38:00,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:38:00,581 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:00,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash 474534976, now seen corresponding path program 1 times [2022-07-19 20:38:00,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:00,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629803829] [2022-07-19 20:38:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:00,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:00,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:00,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:00,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:00,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:00,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629803829] [2022-07-19 20:38:00,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629803829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:00,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:00,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:00,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447798884] [2022-07-19 20:38:00,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:00,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:00,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:00,683 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) [2022-07-19 20:38:02,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:02,663 INFO L93 Difference]: Finished difference Result 2621 states and 4154 transitions. [2022-07-19 20:38:02,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:02,664 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 [2022-07-19 20:38:02,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:02,670 INFO L225 Difference]: With dead ends: 2621 [2022-07-19 20:38:02,670 INFO L226 Difference]: Without dead ends: 1835 [2022-07-19 20:38:02,672 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 [2022-07-19 20:38:02,672 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1106 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:02,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 2076 Invalid, 2296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 20:38:02,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2022-07-19 20:38:02,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1310. [2022-07-19 20:38:02,725 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) [2022-07-19 20:38:02,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2035 transitions. [2022-07-19 20:38:02,729 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2035 transitions. Word has length 134 [2022-07-19 20:38:02,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:02,729 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2035 transitions. [2022-07-19 20:38:02,729 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) [2022-07-19 20:38:02,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2035 transitions. [2022-07-19 20:38:02,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:02,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:02,731 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] [2022-07-19 20:38:02,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:38:02,731 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:02,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash -2093287358, now seen corresponding path program 1 times [2022-07-19 20:38:02,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:02,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881052638] [2022-07-19 20:38:02,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:02,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:02,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:02,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:02,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:02,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881052638] [2022-07-19 20:38:02,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881052638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:02,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:02,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:02,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936789113] [2022-07-19 20:38:02,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:02,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:02,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:02,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:02,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:02,829 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) [2022-07-19 20:38:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:04,571 INFO L93 Difference]: Finished difference Result 4469 states and 7055 transitions. [2022-07-19 20:38:04,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:04,572 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 [2022-07-19 20:38:04,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:04,585 INFO L225 Difference]: With dead ends: 4469 [2022-07-19 20:38:04,585 INFO L226 Difference]: Without dead ends: 3176 [2022-07-19 20:38:04,589 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 [2022-07-19 20:38:04,589 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, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:04,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 1440 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:38:04,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3176 states. [2022-07-19 20:38:04,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2330. [2022-07-19 20:38:04,722 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) [2022-07-19 20:38:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3621 transitions. [2022-07-19 20:38:04,729 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3621 transitions. Word has length 134 [2022-07-19 20:38:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:04,729 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3621 transitions. [2022-07-19 20:38:04,729 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) [2022-07-19 20:38:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3621 transitions. [2022-07-19 20:38:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:04,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:04,732 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] [2022-07-19 20:38:04,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:38:04,732 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:04,732 INFO L85 PathProgramCache]: Analyzing trace with hash 554316996, now seen corresponding path program 1 times [2022-07-19 20:38:04,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:04,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475239223] [2022-07-19 20:38:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:04,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:04,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:04,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475239223] [2022-07-19 20:38:04,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475239223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:04,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:04,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:04,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671381618] [2022-07-19 20:38:04,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:04,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:04,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:04,838 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) [2022-07-19 20:38:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:05,867 INFO L93 Difference]: Finished difference Result 5504 states and 8694 transitions. [2022-07-19 20:38:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:05,867 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 [2022-07-19 20:38:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:05,878 INFO L225 Difference]: With dead ends: 5504 [2022-07-19 20:38:05,879 INFO L226 Difference]: Without dead ends: 3191 [2022-07-19 20:38:05,884 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 [2022-07-19 20:38:05,885 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 911 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:05,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 983 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:38:05,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2022-07-19 20:38:05,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 2330. [2022-07-19 20:38:05,991 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) [2022-07-19 20:38:05,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3612 transitions. [2022-07-19 20:38:05,996 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3612 transitions. Word has length 134 [2022-07-19 20:38:05,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:05,996 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3612 transitions. [2022-07-19 20:38:05,997 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) [2022-07-19 20:38:05,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3612 transitions. [2022-07-19 20:38:05,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:05,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:05,999 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] [2022-07-19 20:38:06,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:38:06,000 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:06,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:06,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1577033726, now seen corresponding path program 1 times [2022-07-19 20:38:06,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:06,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288548946] [2022-07-19 20:38:06,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:06,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:06,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:06,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288548946] [2022-07-19 20:38:06,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288548946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:06,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:06,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:06,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80909086] [2022-07-19 20:38:06,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:06,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:06,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:06,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:06,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:06,113 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) [2022-07-19 20:38:07,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:07,111 INFO L93 Difference]: Finished difference Result 5494 states and 8647 transitions. [2022-07-19 20:38:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:07,111 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 [2022-07-19 20:38:07,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:07,120 INFO L225 Difference]: With dead ends: 5494 [2022-07-19 20:38:07,121 INFO L226 Difference]: Without dead ends: 3181 [2022-07-19 20:38:07,125 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 [2022-07-19 20:38:07,126 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 791 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:07,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1122 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:38:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3181 states. [2022-07-19 20:38:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 2330. [2022-07-19 20:38:07,238 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) [2022-07-19 20:38:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3603 transitions. [2022-07-19 20:38:07,243 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3603 transitions. Word has length 134 [2022-07-19 20:38:07,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:07,243 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3603 transitions. [2022-07-19 20:38:07,243 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) [2022-07-19 20:38:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3603 transitions. [2022-07-19 20:38:07,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:07,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:07,245 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] [2022-07-19 20:38:07,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:38:07,245 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:07,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1679348996, now seen corresponding path program 1 times [2022-07-19 20:38:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:07,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043612794] [2022-07-19 20:38:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:07,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:07,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:07,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043612794] [2022-07-19 20:38:07,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043612794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:07,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:07,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:07,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063146078] [2022-07-19 20:38:07,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:07,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:07,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:07,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:07,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:07,330 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) [2022-07-19 20:38:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:08,234 INFO L93 Difference]: Finished difference Result 5484 states and 8600 transitions. [2022-07-19 20:38:08,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:08,234 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 [2022-07-19 20:38:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:08,243 INFO L225 Difference]: With dead ends: 5484 [2022-07-19 20:38:08,244 INFO L226 Difference]: Without dead ends: 3171 [2022-07-19 20:38:08,248 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 [2022-07-19 20:38:08,248 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 [2022-07-19 20:38:08,249 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] [2022-07-19 20:38:08,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-07-19 20:38:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2330. [2022-07-19 20:38:08,378 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) [2022-07-19 20:38:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3594 transitions. [2022-07-19 20:38:08,382 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3594 transitions. Word has length 134 [2022-07-19 20:38:08,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:08,382 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 3594 transitions. [2022-07-19 20:38:08,382 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) [2022-07-19 20:38:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3594 transitions. [2022-07-19 20:38:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:08,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:08,384 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] [2022-07-19 20:38:08,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:38:08,384 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:08,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:08,385 INFO L85 PathProgramCache]: Analyzing trace with hash -293816382, now seen corresponding path program 1 times [2022-07-19 20:38:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:08,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5716770] [2022-07-19 20:38:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:08,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:08,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:08,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:08,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5716770] [2022-07-19 20:38:08,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5716770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:08,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:08,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:08,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191496455] [2022-07-19 20:38:08,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:08,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:08,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:08,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:08,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:08,464 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) [2022-07-19 20:38:10,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:10,463 INFO L93 Difference]: Finished difference Result 8145 states and 12699 transitions. [2022-07-19 20:38:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:10,464 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 [2022-07-19 20:38:10,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:10,489 INFO L225 Difference]: With dead ends: 8145 [2022-07-19 20:38:10,489 INFO L226 Difference]: Without dead ends: 5832 [2022-07-19 20:38:10,495 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 [2022-07-19 20:38:10,496 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 1079 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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 [2022-07-19 20:38:10,496 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] [2022-07-19 20:38:10,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5832 states. [2022-07-19 20:38:10,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5832 to 4402. [2022-07-19 20:38:10,951 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) [2022-07-19 20:38:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6796 transitions. [2022-07-19 20:38:10,961 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6796 transitions. Word has length 134 [2022-07-19 20:38:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:10,962 INFO L495 AbstractCegarLoop]: Abstraction has 4402 states and 6796 transitions. [2022-07-19 20:38:10,963 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) [2022-07-19 20:38:10,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6796 transitions. [2022-07-19 20:38:10,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:10,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:10,965 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] [2022-07-19 20:38:10,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:38:10,966 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:10,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:10,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1859290436, now seen corresponding path program 1 times [2022-07-19 20:38:10,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:10,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816717552] [2022-07-19 20:38:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:10,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:10,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:11,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:11,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816717552] [2022-07-19 20:38:11,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816717552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:11,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:11,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:11,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008573083] [2022-07-19 20:38:11,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:11,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:11,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:11,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:11,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:11,077 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) [2022-07-19 20:38:13,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:13,789 INFO L93 Difference]: Finished difference Result 17495 states and 27237 transitions. [2022-07-19 20:38:13,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:38:13,790 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 [2022-07-19 20:38:13,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:13,828 INFO L225 Difference]: With dead ends: 17495 [2022-07-19 20:38:13,828 INFO L226 Difference]: Without dead ends: 13110 [2022-07-19 20:38:13,840 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 [2022-07-19 20:38:13,841 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 [2022-07-19 20:38:13,841 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] [2022-07-19 20:38:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13110 states. [2022-07-19 20:38:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13110 to 8507. [2022-07-19 20:38:14,408 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) [2022-07-19 20:38:14,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8507 states to 8507 states and 13200 transitions. [2022-07-19 20:38:14,424 INFO L78 Accepts]: Start accepts. Automaton has 8507 states and 13200 transitions. Word has length 134 [2022-07-19 20:38:14,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:14,424 INFO L495 AbstractCegarLoop]: Abstraction has 8507 states and 13200 transitions. [2022-07-19 20:38:14,424 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) [2022-07-19 20:38:14,424 INFO L276 IsEmpty]: Start isEmpty. Operand 8507 states and 13200 transitions. [2022-07-19 20:38:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:14,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:14,429 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] [2022-07-19 20:38:14,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:38:14,429 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:14,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1236008834, now seen corresponding path program 1 times [2022-07-19 20:38:14,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:14,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122206332] [2022-07-19 20:38:14,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:14,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:14,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:14,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122206332] [2022-07-19 20:38:14,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122206332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:14,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:14,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:14,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490635943] [2022-07-19 20:38:14,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:14,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:14,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:14,508 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) [2022-07-19 20:38:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:18,057 INFO L93 Difference]: Finished difference Result 33726 states and 52747 transitions. [2022-07-19 20:38:18,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:38:18,058 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 [2022-07-19 20:38:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:18,132 INFO L225 Difference]: With dead ends: 33726 [2022-07-19 20:38:18,132 INFO L226 Difference]: Without dead ends: 25236 [2022-07-19 20:38:18,158 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 [2022-07-19 20:38:18,159 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 [2022-07-19 20:38:18,159 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] [2022-07-19 20:38:18,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25236 states. [2022-07-19 20:38:19,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25236 to 16540. [2022-07-19 20:38:19,324 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) [2022-07-19 20:38:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16540 states to 16540 states and 25896 transitions. [2022-07-19 20:38:19,369 INFO L78 Accepts]: Start accepts. Automaton has 16540 states and 25896 transitions. Word has length 134 [2022-07-19 20:38:19,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:19,369 INFO L495 AbstractCegarLoop]: Abstraction has 16540 states and 25896 transitions. [2022-07-19 20:38:19,370 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) [2022-07-19 20:38:19,370 INFO L276 IsEmpty]: Start isEmpty. Operand 16540 states and 25896 transitions. [2022-07-19 20:38:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:19,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:19,377 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] [2022-07-19 20:38:19,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:38:19,378 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:19,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1354450308, now seen corresponding path program 1 times [2022-07-19 20:38:19,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:19,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510572743] [2022-07-19 20:38:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:19,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:19,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:19,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510572743] [2022-07-19 20:38:19,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510572743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:19,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:19,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:19,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544669244] [2022-07-19 20:38:19,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:19,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:19,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:19,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:19,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:19,467 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) [2022-07-19 20:38:24,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:24,866 INFO L93 Difference]: Finished difference Result 64155 states and 101261 transitions. [2022-07-19 20:38:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:38:24,866 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 [2022-07-19 20:38:24,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:25,005 INFO L225 Difference]: With dead ends: 64155 [2022-07-19 20:38:25,005 INFO L226 Difference]: Without dead ends: 47632 [2022-07-19 20:38:25,045 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 [2022-07-19 20:38:25,045 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1351 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:25,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 1408 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 20:38:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47632 states. [2022-07-19 20:38:27,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47632 to 32798. [2022-07-19 20:38:27,514 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) [2022-07-19 20:38:27,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32798 states to 32798 states and 52126 transitions. [2022-07-19 20:38:27,587 INFO L78 Accepts]: Start accepts. Automaton has 32798 states and 52126 transitions. Word has length 134 [2022-07-19 20:38:27,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:27,588 INFO L495 AbstractCegarLoop]: Abstraction has 32798 states and 52126 transitions. [2022-07-19 20:38:27,588 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) [2022-07-19 20:38:27,588 INFO L276 IsEmpty]: Start isEmpty. Operand 32798 states and 52126 transitions. [2022-07-19 20:38:27,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:27,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:27,602 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] [2022-07-19 20:38:27,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:38:27,602 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:27,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:27,603 INFO L85 PathProgramCache]: Analyzing trace with hash -678943738, now seen corresponding path program 1 times [2022-07-19 20:38:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:27,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378945135] [2022-07-19 20:38:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:27,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:27,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378945135] [2022-07-19 20:38:27,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378945135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:27,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:27,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:27,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322046368] [2022-07-19 20:38:27,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:27,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:27,682 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) [2022-07-19 20:38:37,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:37,305 INFO L93 Difference]: Finished difference Result 125275 states and 200597 transitions. [2022-07-19 20:38:37,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:38:37,306 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 [2022-07-19 20:38:37,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:37,635 INFO L225 Difference]: With dead ends: 125275 [2022-07-19 20:38:37,635 INFO L226 Difference]: Without dead ends: 92494 [2022-07-19 20:38:37,729 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 [2022-07-19 20:38:37,730 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1248 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:37,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 2009 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:38:37,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92494 states. [2022-07-19 20:38:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92494 to 65247. [2022-07-19 20:38:42,542 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) [2022-07-19 20:38:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65247 states to 65247 states and 105974 transitions. [2022-07-19 20:38:42,872 INFO L78 Accepts]: Start accepts. Automaton has 65247 states and 105974 transitions. Word has length 134 [2022-07-19 20:38:42,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:42,872 INFO L495 AbstractCegarLoop]: Abstraction has 65247 states and 105974 transitions. [2022-07-19 20:38:42,873 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) [2022-07-19 20:38:42,873 INFO L276 IsEmpty]: Start isEmpty. Operand 65247 states and 105974 transitions. [2022-07-19 20:38:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:42,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:42,901 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] [2022-07-19 20:38:42,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:38:42,902 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:42,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:42,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1749314884, now seen corresponding path program 1 times [2022-07-19 20:38:42,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:42,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902335364] [2022-07-19 20:38:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:42,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:42,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:42,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902335364] [2022-07-19 20:38:42,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902335364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:42,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:42,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:42,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354771950] [2022-07-19 20:38:42,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:42,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:42,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:42,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:42,997 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) [2022-07-19 20:38:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:50,955 INFO L93 Difference]: Finished difference Result 149120 states and 247519 transitions. [2022-07-19 20:38:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:50,955 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 [2022-07-19 20:38:50,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:51,250 INFO L225 Difference]: With dead ends: 149120 [2022-07-19 20:38:51,250 INFO L226 Difference]: Without dead ends: 83890 [2022-07-19 20:38:51,379 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 [2022-07-19 20:38:51,380 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 [2022-07-19 20:38:51,380 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] [2022-07-19 20:38:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83890 states. [2022-07-19 20:38:56,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83890 to 65247. [2022-07-19 20:38:56,165 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) [2022-07-19 20:38:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65247 states to 65247 states and 105717 transitions. [2022-07-19 20:38:56,371 INFO L78 Accepts]: Start accepts. Automaton has 65247 states and 105717 transitions. Word has length 134 [2022-07-19 20:38:56,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:56,371 INFO L495 AbstractCegarLoop]: Abstraction has 65247 states and 105717 transitions. [2022-07-19 20:38:56,372 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) [2022-07-19 20:38:56,372 INFO L276 IsEmpty]: Start isEmpty. Operand 65247 states and 105717 transitions. [2022-07-19 20:38:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:38:56,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:56,401 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] [2022-07-19 20:38:56,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:38:56,401 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:56,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:56,402 INFO L85 PathProgramCache]: Analyzing trace with hash 442172486, now seen corresponding path program 1 times [2022-07-19 20:38:56,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:56,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611980926] [2022-07-19 20:38:56,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:56,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:38:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:38:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:38:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:56,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:56,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611980926] [2022-07-19 20:38:56,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611980926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:56,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:56,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:56,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789302465] [2022-07-19 20:38:56,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:56,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:56,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:56,488 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) [2022-07-19 20:39:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:14,022 INFO L93 Difference]: Finished difference Result 241304 states and 394403 transitions. [2022-07-19 20:39:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:39:14,023 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 [2022-07-19 20:39:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:14,952 INFO L225 Difference]: With dead ends: 241304 [2022-07-19 20:39:14,952 INFO L226 Difference]: Without dead ends: 176074 [2022-07-19 20:39:15,084 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 [2022-07-19 20:39:15,085 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 1162 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2059 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 2141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:15,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 1998 Invalid, 2141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2059 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:39:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176074 states. [2022-07-19 20:39:24,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176074 to 130273. [2022-07-19 20:39:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130273 states, 119236 states have (on average 1.5311818578281726) internal successors, (182572), 119749 states have internal predecessors, (182572), 7446 states have call successors, (7446), 3078 states have call predecessors, (7446), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2022-07-19 20:39:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130273 states to 130273 states and 217659 transitions. [2022-07-19 20:39:25,598 INFO L78 Accepts]: Start accepts. Automaton has 130273 states and 217659 transitions. Word has length 134 [2022-07-19 20:39:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:25,599 INFO L495 AbstractCegarLoop]: Abstraction has 130273 states and 217659 transitions. [2022-07-19 20:39:25,599 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) [2022-07-19 20:39:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 130273 states and 217659 transitions. [2022-07-19 20:39:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 20:39:25,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:25,669 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] [2022-07-19 20:39:25,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:39:25,669 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:25,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:25,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1955298044, now seen corresponding path program 1 times [2022-07-19 20:39:25,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:25,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595348522] [2022-07-19 20:39:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:25,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 20:39:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:39:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:39:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 20:39:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:25,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:25,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595348522] [2022-07-19 20:39:25,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595348522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:25,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:25,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:25,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895037326] [2022-07-19 20:39:25,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:25,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:25,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:25,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:25,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:25,753 INFO L87 Difference]: Start difference. First operand 130273 states and 217659 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)