./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label03.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 00976d0f33ca0b9714575e3679f5d33e30ad2cb228857f610050b5b28bb1919c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:00:54,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:00:54,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:00:54,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:00:54,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:00:54,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:00:54,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:00:54,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:00:54,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:00:54,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:00:54,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:00:54,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:00:54,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:00:54,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:00:54,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:00:54,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:00:54,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:00:54,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:00:54,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:00:54,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:00:54,594 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:00:54,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:00:54,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:00:54,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:00:54,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:00:54,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:00:54,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:00:54,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:00:54,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:00:54,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:00:54,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:00:54,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:00:54,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:00:54,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:00:54,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:00:54,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:00:54,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:00:54,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:00:54,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:00:54,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:00:54,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:00:54,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:00:54,614 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:00:54,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:00:54,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:00:54,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:00:54,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:00:54,640 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:00:54,640 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:00:54,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:00:54,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:00:54,641 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:00:54,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:00:54,642 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:00:54,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:00:54,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:00:54,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:00:54,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:00:54,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:00:54,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:00:54,643 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:00:54,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:00:54,643 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:00:54,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:00:54,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:00:54,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:00:54,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:00:54,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:00:54,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:00:54,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:00:54,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:00:54,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:00:54,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:00:54,646 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:00:54,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:00:54,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:00:54,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00976d0f33ca0b9714575e3679f5d33e30ad2cb228857f610050b5b28bb1919c [2022-07-12 09:00:54,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:00:54,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:00:54,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:00:54,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:00:54,866 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:00:54,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label03.c [2022-07-12 09:00:54,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f028279f/42f943fdc79546d1904933bf4801cbea/FLAG4e6d4bafb [2022-07-12 09:00:55,510 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:00:55,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label03.c [2022-07-12 09:00:55,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f028279f/42f943fdc79546d1904933bf4801cbea/FLAG4e6d4bafb [2022-07-12 09:00:55,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f028279f/42f943fdc79546d1904933bf4801cbea [2022-07-12 09:00:55,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:00:55,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:00:55,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:00:55,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:00:55,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:00:55,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:00:55" (1/1) ... [2022-07-12 09:00:55,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770e7391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:55, skipping insertion in model container [2022-07-12 09:00:55,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:00:55" (1/1) ... [2022-07-12 09:00:55,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:00:55,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:00:56,074 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/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label03.c[6354,6367] [2022-07-12 09:00:56,103 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/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label03.c[8691,8704] [2022-07-12 09:00:56,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:00:56,578 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:00:56,624 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/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label03.c[6354,6367] [2022-07-12 09:00:56,631 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/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label03.c[8691,8704] [2022-07-12 09:00:56,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:00:56,966 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:00:56,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56 WrapperNode [2022-07-12 09:00:56,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:00:56,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:00:56,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:00:56,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:00:56,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (1/1) ... [2022-07-12 09:00:57,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (1/1) ... [2022-07-12 09:00:57,243 INFO L137 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4976 [2022-07-12 09:00:57,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:00:57,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:00:57,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:00:57,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:00:57,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (1/1) ... [2022-07-12 09:00:57,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (1/1) ... [2022-07-12 09:00:57,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (1/1) ... [2022-07-12 09:00:57,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (1/1) ... [2022-07-12 09:00:57,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (1/1) ... [2022-07-12 09:00:57,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (1/1) ... [2022-07-12 09:00:57,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (1/1) ... [2022-07-12 09:00:57,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:00:57,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:00:57,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:00:57,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:00:57,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (1/1) ... [2022-07-12 09:00:57,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:00:57,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:00:57,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:00:57,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:00:57,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:00:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:00:57,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:00:57,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:00:57,926 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:00:57,927 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:01:00,597 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:01:00,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:01:00,612 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:01:00,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:01:00 BoogieIcfgContainer [2022-07-12 09:01:00,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:01:00,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:01:00,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:01:00,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:01:00,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:00:55" (1/3) ... [2022-07-12 09:01:00,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a3278b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:01:00, skipping insertion in model container [2022-07-12 09:01:00,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:00:56" (2/3) ... [2022-07-12 09:01:00,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a3278b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:01:00, skipping insertion in model container [2022-07-12 09:01:00,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:01:00" (3/3) ... [2022-07-12 09:01:00,636 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label03.c [2022-07-12 09:01:00,645 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:01:00,645 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:01:00,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:01:00,708 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@595db598, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@c58815f [2022-07-12 09:01:00,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:01:00,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-12 09:01:00,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:00,723 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] [2022-07-12 09:01:00,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:00,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:00,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1700470853, now seen corresponding path program 1 times [2022-07-12 09:01:00,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:00,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384924614] [2022-07-12 09:01:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:00,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:00,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:00,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384924614] [2022-07-12 09:01:00,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384924614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:00,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:00,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:01:00,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535716476] [2022-07-12 09:01:00,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:00,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:01:00,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:00,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:01:00,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:00,951 INFO L87 Difference]: Start difference. First operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:03,672 INFO L93 Difference]: Finished difference Result 2489 states and 4794 transitions. [2022-07-12 09:01:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:01:03,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-12 09:01:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:03,709 INFO L225 Difference]: With dead ends: 2489 [2022-07-12 09:01:03,709 INFO L226 Difference]: Without dead ends: 1563 [2022-07-12 09:01:03,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:03,736 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 912 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:03,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 580 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 09:01:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2022-07-12 09:01:03,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1563. [2022-07-12 09:01:03,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1561 states have (on average 1.6399743754003844) internal successors, (2560), 1562 states have internal predecessors, (2560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2560 transitions. [2022-07-12 09:01:03,839 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2560 transitions. Word has length 20 [2022-07-12 09:01:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:03,839 INFO L495 AbstractCegarLoop]: Abstraction has 1563 states and 2560 transitions. [2022-07-12 09:01:03,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:03,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2560 transitions. [2022-07-12 09:01:03,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-12 09:01:03,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:03,840 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] [2022-07-12 09:01:03,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:01:03,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:03,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash 157814817, now seen corresponding path program 1 times [2022-07-12 09:01:03,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:03,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774723372] [2022-07-12 09:01:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:03,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:03,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774723372] [2022-07-12 09:01:03,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774723372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:03,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:03,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:01:03,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504086782] [2022-07-12 09:01:03,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:03,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:01:03,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:01:03,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:01:03,879 INFO L87 Difference]: Start difference. First operand 1563 states and 2560 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:03,926 INFO L93 Difference]: Finished difference Result 1639 states and 2676 transitions. [2022-07-12 09:01:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:01:03,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-12 09:01:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:03,931 INFO L225 Difference]: With dead ends: 1639 [2022-07-12 09:01:03,931 INFO L226 Difference]: Without dead ends: 1599 [2022-07-12 09:01:03,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:01:03,932 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 58 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:03,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 6095 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:03,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2022-07-12 09:01:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1563. [2022-07-12 09:01:03,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1561 states have (on average 1.6297245355541319) internal successors, (2544), 1562 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2544 transitions. [2022-07-12 09:01:03,955 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2544 transitions. Word has length 26 [2022-07-12 09:01:03,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:03,955 INFO L495 AbstractCegarLoop]: Abstraction has 1563 states and 2544 transitions. [2022-07-12 09:01:03,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2544 transitions. [2022-07-12 09:01:03,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 09:01:03,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:03,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:03,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:01:03,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:03,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:03,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1324654887, now seen corresponding path program 1 times [2022-07-12 09:01:03,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:03,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994053141] [2022-07-12 09:01:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:03,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:03,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994053141] [2022-07-12 09:01:03,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994053141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:03,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:03,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:01:03,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711665350] [2022-07-12 09:01:03,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:03,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:01:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:01:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:03,996 INFO L87 Difference]: Start difference. First operand 1563 states and 2544 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:04,017 INFO L93 Difference]: Finished difference Result 1629 states and 2646 transitions. [2022-07-12 09:01:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:01:04,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-12 09:01:04,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:04,022 INFO L225 Difference]: With dead ends: 1629 [2022-07-12 09:01:04,022 INFO L226 Difference]: Without dead ends: 1593 [2022-07-12 09:01:04,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:04,023 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1485 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:04,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2022-07-12 09:01:04,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1591. [2022-07-12 09:01:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1589 states have (on average 1.6286972938955318) internal successors, (2588), 1590 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2588 transitions. [2022-07-12 09:01:04,048 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2588 transitions. Word has length 41 [2022-07-12 09:01:04,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:04,048 INFO L495 AbstractCegarLoop]: Abstraction has 1591 states and 2588 transitions. [2022-07-12 09:01:04,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2588 transitions. [2022-07-12 09:01:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-12 09:01:04,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:04,050 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] [2022-07-12 09:01:04,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:01:04,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:04,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:04,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1376027727, now seen corresponding path program 1 times [2022-07-12 09:01:04,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:04,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215272353] [2022-07-12 09:01:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:04,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:04,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:04,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215272353] [2022-07-12 09:01:04,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215272353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:04,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:04,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:01:04,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992002686] [2022-07-12 09:01:04,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:04,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:01:04,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:04,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:01:04,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:01:04,097 INFO L87 Difference]: Start difference. First operand 1591 states and 2588 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:04,171 INFO L93 Difference]: Finished difference Result 1975 states and 3188 transitions. [2022-07-12 09:01:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:01:04,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-12 09:01:04,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:04,178 INFO L225 Difference]: With dead ends: 1975 [2022-07-12 09:01:04,178 INFO L226 Difference]: Without dead ends: 1911 [2022-07-12 09:01:04,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:01:04,185 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 4709 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:04,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4709 Valid, 1779 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:04,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2022-07-12 09:01:04,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1653. [2022-07-12 09:01:04,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1651 states have (on average 1.6250757116898848) internal successors, (2683), 1652 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2683 transitions. [2022-07-12 09:01:04,216 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2683 transitions. Word has length 41 [2022-07-12 09:01:04,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:04,217 INFO L495 AbstractCegarLoop]: Abstraction has 1653 states and 2683 transitions. [2022-07-12 09:01:04,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2683 transitions. [2022-07-12 09:01:04,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 09:01:04,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:04,221 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] [2022-07-12 09:01:04,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:01:04,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:04,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1902982177, now seen corresponding path program 1 times [2022-07-12 09:01:04,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:04,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958523100] [2022-07-12 09:01:04,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:04,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:04,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:04,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958523100] [2022-07-12 09:01:04,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958523100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:04,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:04,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:01:04,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175360169] [2022-07-12 09:01:04,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:04,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:01:04,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:01:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:04,295 INFO L87 Difference]: Start difference. First operand 1653 states and 2683 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:04,352 INFO L93 Difference]: Finished difference Result 1840 states and 2970 transitions. [2022-07-12 09:01:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:01:04,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-12 09:01:04,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:04,358 INFO L225 Difference]: With dead ends: 1840 [2022-07-12 09:01:04,358 INFO L226 Difference]: Without dead ends: 1714 [2022-07-12 09:01:04,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:04,360 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:04,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1565 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:04,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2022-07-12 09:01:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1712. [2022-07-12 09:01:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1710 states have (on average 1.62046783625731) internal successors, (2771), 1711 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2771 transitions. [2022-07-12 09:01:04,393 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2771 transitions. Word has length 43 [2022-07-12 09:01:04,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:04,396 INFO L495 AbstractCegarLoop]: Abstraction has 1712 states and 2771 transitions. [2022-07-12 09:01:04,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2771 transitions. [2022-07-12 09:01:04,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 09:01:04,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:04,398 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] [2022-07-12 09:01:04,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:01:04,399 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:04,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1836488665, now seen corresponding path program 1 times [2022-07-12 09:01:04,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:04,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824467108] [2022-07-12 09:01:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:04,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:04,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:04,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824467108] [2022-07-12 09:01:04,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824467108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:04,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:04,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:01:04,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861495884] [2022-07-12 09:01:04,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:04,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:01:04,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:01:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:01:04,507 INFO L87 Difference]: Start difference. First operand 1712 states and 2771 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:04,570 INFO L93 Difference]: Finished difference Result 1897 states and 3053 transitions. [2022-07-12 09:01:04,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:01:04,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-12 09:01:04,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:04,576 INFO L225 Difference]: With dead ends: 1897 [2022-07-12 09:01:04,576 INFO L226 Difference]: Without dead ends: 1714 [2022-07-12 09:01:04,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:01:04,578 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 4476 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4476 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:04,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4476 Valid, 1633 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:04,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2022-07-12 09:01:04,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1712. [2022-07-12 09:01:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1710 states have (on average 1.6187134502923977) internal successors, (2768), 1711 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2768 transitions. [2022-07-12 09:01:04,612 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2768 transitions. Word has length 43 [2022-07-12 09:01:04,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:04,612 INFO L495 AbstractCegarLoop]: Abstraction has 1712 states and 2768 transitions. [2022-07-12 09:01:04,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2768 transitions. [2022-07-12 09:01:04,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 09:01:04,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:04,614 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] [2022-07-12 09:01:04,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:01:04,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:04,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash -47574589, now seen corresponding path program 1 times [2022-07-12 09:01:04,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:04,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661958901] [2022-07-12 09:01:04,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:04,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:04,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:04,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661958901] [2022-07-12 09:01:04,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661958901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:04,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:04,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:01:04,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112381319] [2022-07-12 09:01:04,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:04,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:01:04,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:04,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:01:04,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:04,662 INFO L87 Difference]: Start difference. First operand 1712 states and 2768 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:04,698 INFO L93 Difference]: Finished difference Result 2042 states and 3264 transitions. [2022-07-12 09:01:04,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:01:04,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-12 09:01:04,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:04,705 INFO L225 Difference]: With dead ends: 2042 [2022-07-12 09:01:04,705 INFO L226 Difference]: Without dead ends: 1859 [2022-07-12 09:01:04,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:04,707 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1477 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:04,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1603 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:04,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2022-07-12 09:01:04,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 1857. [2022-07-12 09:01:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1855 states have (on average 1.6059299191374663) internal successors, (2979), 1856 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2979 transitions. [2022-07-12 09:01:04,752 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2979 transitions. Word has length 43 [2022-07-12 09:01:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:04,752 INFO L495 AbstractCegarLoop]: Abstraction has 1857 states and 2979 transitions. [2022-07-12 09:01:04,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2979 transitions. [2022-07-12 09:01:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 09:01:04,753 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:04,753 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] [2022-07-12 09:01:04,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:01:04,754 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:04,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1199933027, now seen corresponding path program 1 times [2022-07-12 09:01:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:04,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890952005] [2022-07-12 09:01:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:04,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:04,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:04,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890952005] [2022-07-12 09:01:04,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890952005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:04,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:04,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:01:04,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739063977] [2022-07-12 09:01:04,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:04,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:01:04,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:04,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:01:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:04,781 INFO L87 Difference]: Start difference. First operand 1857 states and 2979 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:04,827 INFO L93 Difference]: Finished difference Result 2441 states and 3837 transitions. [2022-07-12 09:01:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:01:04,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-07-12 09:01:04,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:04,833 INFO L225 Difference]: With dead ends: 2441 [2022-07-12 09:01:04,833 INFO L226 Difference]: Without dead ends: 2113 [2022-07-12 09:01:04,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:04,835 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:04,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2022-07-12 09:01:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 2111. [2022-07-12 09:01:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 2109 states have (on average 1.5813181602655286) internal successors, (3335), 2110 states have internal predecessors, (3335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 3335 transitions. [2022-07-12 09:01:04,891 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 3335 transitions. Word has length 43 [2022-07-12 09:01:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:04,891 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 3335 transitions. [2022-07-12 09:01:04,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 3335 transitions. [2022-07-12 09:01:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 09:01:04,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:04,892 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] [2022-07-12 09:01:04,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:01:04,893 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:04,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1511296967, now seen corresponding path program 1 times [2022-07-12 09:01:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:04,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535057807] [2022-07-12 09:01:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:04,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:04,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535057807] [2022-07-12 09:01:04,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535057807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:04,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:04,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:01:04,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466704912] [2022-07-12 09:01:04,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:04,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:01:04,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:04,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:01:04,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:01:04,954 INFO L87 Difference]: Start difference. First operand 2111 states and 3335 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:05,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:05,128 INFO L93 Difference]: Finished difference Result 2634 states and 4063 transitions. [2022-07-12 09:01:05,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:01:05,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-07-12 09:01:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:05,136 INFO L225 Difference]: With dead ends: 2634 [2022-07-12 09:01:05,136 INFO L226 Difference]: Without dead ends: 2632 [2022-07-12 09:01:05,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:01:05,138 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 331 mSDsluCounter, 8972 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 10503 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:05,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 10503 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2022-07-12 09:01:05,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2159. [2022-07-12 09:01:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 2157 states have (on average 1.5665275846082523) internal successors, (3379), 2158 states have internal predecessors, (3379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 3379 transitions. [2022-07-12 09:01:05,209 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 3379 transitions. Word has length 44 [2022-07-12 09:01:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:05,209 INFO L495 AbstractCegarLoop]: Abstraction has 2159 states and 3379 transitions. [2022-07-12 09:01:05,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 3379 transitions. [2022-07-12 09:01:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 09:01:05,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:05,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:05,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:01:05,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:05,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:05,211 INFO L85 PathProgramCache]: Analyzing trace with hash -213997176, now seen corresponding path program 1 times [2022-07-12 09:01:05,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:05,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335050646] [2022-07-12 09:01:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:05,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:05,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 09:01:05,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:05,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335050646] [2022-07-12 09:01:05,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335050646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:05,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:05,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:01:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695647002] [2022-07-12 09:01:05,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:05,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:01:05,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:05,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:01:05,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:01:05,252 INFO L87 Difference]: Start difference. First operand 2159 states and 3379 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:05,421 INFO L93 Difference]: Finished difference Result 4187 states and 6227 transitions. [2022-07-12 09:01:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:01:05,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-12 09:01:05,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:05,431 INFO L225 Difference]: With dead ends: 4187 [2022-07-12 09:01:05,431 INFO L226 Difference]: Without dead ends: 3557 [2022-07-12 09:01:05,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:01:05,433 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 3075 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3075 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:05,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3075 Valid, 3177 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-07-12 09:01:05,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 2787. [2022-07-12 09:01:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2785 states have (on average 1.5278276481149013) internal successors, (4255), 2786 states have internal predecessors, (4255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:05,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4255 transitions. [2022-07-12 09:01:05,698 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4255 transitions. Word has length 64 [2022-07-12 09:01:05,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:05,699 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4255 transitions. [2022-07-12 09:01:05,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:05,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4255 transitions. [2022-07-12 09:01:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 09:01:05,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:05,700 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:05,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:01:05,700 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:05,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:05,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1033510440, now seen corresponding path program 1 times [2022-07-12 09:01:05,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:05,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161119202] [2022-07-12 09:01:05,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 09:01:05,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:05,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161119202] [2022-07-12 09:01:05,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161119202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:05,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:05,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:01:05,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796070669] [2022-07-12 09:01:05,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:05,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:01:05,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:01:05,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:01:05,751 INFO L87 Difference]: Start difference. First operand 2787 states and 4255 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:06,053 INFO L93 Difference]: Finished difference Result 4815 states and 7103 transitions. [2022-07-12 09:01:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:01:06,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-12 09:01:06,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:06,090 INFO L225 Difference]: With dead ends: 4815 [2022-07-12 09:01:06,091 INFO L226 Difference]: Without dead ends: 4185 [2022-07-12 09:01:06,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:01:06,093 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 3065 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3065 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:06,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3065 Valid, 3213 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2022-07-12 09:01:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3731. [2022-07-12 09:01:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3731 states, 3729 states have (on average 1.4907481898632342) internal successors, (5559), 3730 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:06,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5559 transitions. [2022-07-12 09:01:06,388 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5559 transitions. Word has length 64 [2022-07-12 09:01:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:06,388 INFO L495 AbstractCegarLoop]: Abstraction has 3731 states and 5559 transitions. [2022-07-12 09:01:06,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:06,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5559 transitions. [2022-07-12 09:01:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 09:01:06,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:06,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:06,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:01:06,390 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:06,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:06,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1792023874, now seen corresponding path program 1 times [2022-07-12 09:01:06,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:06,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293882365] [2022-07-12 09:01:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:06,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:01:06,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:06,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293882365] [2022-07-12 09:01:06,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293882365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:06,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:06,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:01:06,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012415392] [2022-07-12 09:01:06,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:06,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:01:06,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:06,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:01:06,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:01:06,439 INFO L87 Difference]: Start difference. First operand 3731 states and 5559 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:06,627 INFO L93 Difference]: Finished difference Result 5083 states and 7483 transitions. [2022-07-12 09:01:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:01:06,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-12 09:01:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:06,635 INFO L225 Difference]: With dead ends: 5083 [2022-07-12 09:01:06,635 INFO L226 Difference]: Without dead ends: 4633 [2022-07-12 09:01:06,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:01:06,636 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 3066 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:06,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3066 Valid, 3181 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2022-07-12 09:01:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 4179. [2022-07-12 09:01:06,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4179 states, 4177 states have (on average 1.4821642327028968) internal successors, (6191), 4178 states have internal predecessors, (6191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6191 transitions. [2022-07-12 09:01:06,886 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6191 transitions. Word has length 64 [2022-07-12 09:01:06,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:06,886 INFO L495 AbstractCegarLoop]: Abstraction has 4179 states and 6191 transitions. [2022-07-12 09:01:06,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:06,887 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6191 transitions. [2022-07-12 09:01:06,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:01:06,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:06,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:06,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:01:06,888 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:06,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash 322769619, now seen corresponding path program 1 times [2022-07-12 09:01:06,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:06,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925955051] [2022-07-12 09:01:06,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:06,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:06,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:06,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925955051] [2022-07-12 09:01:06,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925955051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:06,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:06,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:01:06,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644459796] [2022-07-12 09:01:06,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:06,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:01:06,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:06,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:01:06,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:06,916 INFO L87 Difference]: Start difference. First operand 4179 states and 6191 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:07,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:07,098 INFO L93 Difference]: Finished difference Result 6831 states and 9893 transitions. [2022-07-12 09:01:07,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:01:07,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-12 09:01:07,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:07,105 INFO L225 Difference]: With dead ends: 6831 [2022-07-12 09:01:07,105 INFO L226 Difference]: Without dead ends: 4181 [2022-07-12 09:01:07,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:07,110 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 33 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:07,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3042 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:07,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4181 states. [2022-07-12 09:01:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4181 to 4179. [2022-07-12 09:01:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4179 states, 4177 states have (on average 1.4701939190806799) internal successors, (6141), 4178 states have internal predecessors, (6141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:07,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4179 states to 4179 states and 6141 transitions. [2022-07-12 09:01:07,289 INFO L78 Accepts]: Start accepts. Automaton has 4179 states and 6141 transitions. Word has length 65 [2022-07-12 09:01:07,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:07,289 INFO L495 AbstractCegarLoop]: Abstraction has 4179 states and 6141 transitions. [2022-07-12 09:01:07,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:07,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4179 states and 6141 transitions. [2022-07-12 09:01:07,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:01:07,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:07,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:07,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:01:07,291 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:07,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:07,291 INFO L85 PathProgramCache]: Analyzing trace with hash 235650825, now seen corresponding path program 1 times [2022-07-12 09:01:07,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:07,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672814673] [2022-07-12 09:01:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:07,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:07,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672814673] [2022-07-12 09:01:07,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672814673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:01:07,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:01:07,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:01:07,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936473955] [2022-07-12 09:01:07,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:01:07,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:01:07,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:07,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:01:07,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:07,322 INFO L87 Difference]: Start difference. First operand 4179 states and 6141 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:07,427 INFO L93 Difference]: Finished difference Result 5507 states and 7968 transitions. [2022-07-12 09:01:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:01:07,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-12 09:01:07,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:07,431 INFO L225 Difference]: With dead ends: 5507 [2022-07-12 09:01:07,431 INFO L226 Difference]: Without dead ends: 2857 [2022-07-12 09:01:07,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:01:07,434 INFO L413 NwaCegarLoop]: 1531 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:07,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3027 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:01:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2022-07-12 09:01:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2855. [2022-07-12 09:01:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2855 states, 2853 states have (on average 1.504030844724851) internal successors, (4291), 2854 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 4291 transitions. [2022-07-12 09:01:07,517 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 4291 transitions. Word has length 65 [2022-07-12 09:01:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:07,517 INFO L495 AbstractCegarLoop]: Abstraction has 2855 states and 4291 transitions. [2022-07-12 09:01:07,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:07,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 4291 transitions. [2022-07-12 09:01:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:01:07,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:07,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:07,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:01:07,519 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash -883624385, now seen corresponding path program 1 times [2022-07-12 09:01:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:07,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035314728] [2022-07-12 09:01:07,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:07,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:07,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035314728] [2022-07-12 09:01:07,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035314728] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:01:07,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707475271] [2022-07-12 09:01:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:07,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:01:07,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:01:07,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:01:07,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:01:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:07,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 09:01:07,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:01:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:01:07,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:01:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:01:08,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707475271] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:01:08,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:01:08,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 4] total 20 [2022-07-12 09:01:08,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271209239] [2022-07-12 09:01:08,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:01:08,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 09:01:08,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:08,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 09:01:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-07-12 09:01:08,186 INFO L87 Difference]: Start difference. First operand 2855 states and 4291 transitions. Second operand has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:12,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:12,417 INFO L93 Difference]: Finished difference Result 15821 states and 21606 transitions. [2022-07-12 09:01:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-07-12 09:01:12,417 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-12 09:01:12,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:12,440 INFO L225 Difference]: With dead ends: 15821 [2022-07-12 09:01:12,441 INFO L226 Difference]: Without dead ends: 14495 [2022-07-12 09:01:12,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 119 SyntacticMatches, 5 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6702 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2917, Invalid=13853, Unknown=0, NotChecked=0, Total=16770 [2022-07-12 09:01:12,449 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 15820 mSDsluCounter, 8600 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15820 SdHoareTripleChecker+Valid, 10192 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:12,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15820 Valid, 10192 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:01:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14495 states. [2022-07-12 09:01:12,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14495 to 8017. [2022-07-12 09:01:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8017 states, 8015 states have (on average 1.374048658764816) internal successors, (11013), 8016 states have internal predecessors, (11013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8017 states to 8017 states and 11013 transitions. [2022-07-12 09:01:13,011 INFO L78 Accepts]: Start accepts. Automaton has 8017 states and 11013 transitions. Word has length 65 [2022-07-12 09:01:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:13,012 INFO L495 AbstractCegarLoop]: Abstraction has 8017 states and 11013 transitions. [2022-07-12 09:01:13,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 8017 states and 11013 transitions. [2022-07-12 09:01:13,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:01:13,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:13,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:13,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:01:13,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 09:01:13,230 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:13,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:13,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1505794396, now seen corresponding path program 1 times [2022-07-12 09:01:13,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:13,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053934609] [2022-07-12 09:01:13,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:13,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:13,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:13,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053934609] [2022-07-12 09:01:13,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053934609] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:01:13,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080254588] [2022-07-12 09:01:13,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:13,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:01:13,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:01:13,343 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:01:13,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:01:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:13,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 09:01:13,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:01:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:13,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:01:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:14,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080254588] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:01:14,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:01:14,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2022-07-12 09:01:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683298440] [2022-07-12 09:01:14,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:01:14,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 09:01:14,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:14,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 09:01:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-07-12 09:01:14,276 INFO L87 Difference]: Start difference. First operand 8017 states and 11013 transitions. Second operand has 22 states, 22 states have (on average 6.590909090909091) internal successors, (145), 21 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:01:16,366 INFO L93 Difference]: Finished difference Result 28884 states and 38032 transitions. [2022-07-12 09:01:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 09:01:16,366 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.590909090909091) internal successors, (145), 21 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 09:01:16,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:01:16,403 INFO L225 Difference]: With dead ends: 28884 [2022-07-12 09:01:16,403 INFO L226 Difference]: Without dead ends: 24065 [2022-07-12 09:01:16,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2022-07-12 09:01:16,416 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 9454 mSDsluCounter, 5080 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9454 SdHoareTripleChecker+Valid, 6615 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:01:16,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9454 Valid, 6615 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:01:16,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24065 states. [2022-07-12 09:01:17,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24065 to 15728. [2022-07-12 09:01:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15728 states, 15726 states have (on average 1.336322014498283) internal successors, (21015), 15727 states have internal predecessors, (21015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15728 states to 15728 states and 21015 transitions. [2022-07-12 09:01:17,618 INFO L78 Accepts]: Start accepts. Automaton has 15728 states and 21015 transitions. Word has length 66 [2022-07-12 09:01:17,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:01:17,619 INFO L495 AbstractCegarLoop]: Abstraction has 15728 states and 21015 transitions. [2022-07-12 09:01:17,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.590909090909091) internal successors, (145), 21 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:01:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand 15728 states and 21015 transitions. [2022-07-12 09:01:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:01:17,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:01:17,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:01:17,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:01:17,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 09:01:17,850 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:01:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:01:17,850 INFO L85 PathProgramCache]: Analyzing trace with hash 616171932, now seen corresponding path program 1 times [2022-07-12 09:01:17,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:01:17,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673249978] [2022-07-12 09:01:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:17,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:01:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:17,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:17,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:01:17,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673249978] [2022-07-12 09:01:17,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673249978] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:01:17,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921804448] [2022-07-12 09:01:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:01:17,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:01:17,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:01:17,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:01:17,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:01:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:01:18,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-12 09:01:18,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:01:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:18,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:01:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:01:19,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921804448] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:01:19,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:01:19,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2022-07-12 09:01:19,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544834125] [2022-07-12 09:01:19,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:01:19,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-12 09:01:19,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:01:19,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-12 09:01:19,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2022-07-12 09:01:19,412 INFO L87 Difference]: Start difference. First operand 15728 states and 21015 transitions. Second operand has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:02:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:02:22,806 INFO L93 Difference]: Finished difference Result 249043 states and 322008 transitions. [2022-07-12 09:02:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 612 states. [2022-07-12 09:02:22,807 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 09:02:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:02:23,419 INFO L225 Difference]: With dead ends: 249043 [2022-07-12 09:02:23,419 INFO L226 Difference]: Without dead ends: 234844 [2022-07-12 09:02:23,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 639 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208473 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=46191, Invalid=364049, Unknown=0, NotChecked=0, Total=410240 [2022-07-12 09:02:23,518 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 32228 mSDsluCounter, 19108 mSDsCounter, 0 mSdLazyCounter, 3137 mSolverCounterSat, 2072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32228 SdHoareTripleChecker+Valid, 20744 SdHoareTripleChecker+Invalid, 5209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2072 IncrementalHoareTripleChecker+Valid, 3137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:02:23,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32228 Valid, 20744 Invalid, 5209 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2072 Valid, 3137 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 09:02:24,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234844 states. [2022-07-12 09:02:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234844 to 43308. [2022-07-12 09:02:30,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43308 states, 43306 states have (on average 1.3129589433334872) internal successors, (56859), 43307 states have internal predecessors, (56859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:02:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43308 states to 43308 states and 56859 transitions. [2022-07-12 09:02:30,478 INFO L78 Accepts]: Start accepts. Automaton has 43308 states and 56859 transitions. Word has length 66 [2022-07-12 09:02:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:02:30,478 INFO L495 AbstractCegarLoop]: Abstraction has 43308 states and 56859 transitions. [2022-07-12 09:02:30,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:02:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 43308 states and 56859 transitions. [2022-07-12 09:02:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:02:30,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:02:30,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:02:30,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:02:30,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:02:30,695 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:02:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:02:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1486365826, now seen corresponding path program 1 times [2022-07-12 09:02:30,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:02:30,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789827432] [2022-07-12 09:02:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:02:30,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:02:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:02:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:02:30,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:02:30,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789827432] [2022-07-12 09:02:30,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789827432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:02:30,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:02:30,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:02:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616129475] [2022-07-12 09:02:30,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:02:30,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:02:30,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:02:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:02:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:02:30,736 INFO L87 Difference]: Start difference. First operand 43308 states and 56859 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:02:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:02:34,537 INFO L93 Difference]: Finished difference Result 69153 states and 90326 transitions. [2022-07-12 09:02:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:02:34,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 09:02:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:02:34,571 INFO L225 Difference]: With dead ends: 69153 [2022-07-12 09:02:34,571 INFO L226 Difference]: Without dead ends: 27374 [2022-07-12 09:02:34,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:02:34,598 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 4565 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4565 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:02:34,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4565 Valid, 2974 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:02:34,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27374 states. [2022-07-12 09:02:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27374 to 27374. [2022-07-12 09:02:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27374 states, 27372 states have (on average 1.2877027619465147) internal successors, (35247), 27373 states have internal predecessors, (35247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:02:38,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27374 states to 27374 states and 35247 transitions. [2022-07-12 09:02:38,254 INFO L78 Accepts]: Start accepts. Automaton has 27374 states and 35247 transitions. Word has length 66 [2022-07-12 09:02:38,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:02:38,254 INFO L495 AbstractCegarLoop]: Abstraction has 27374 states and 35247 transitions. [2022-07-12 09:02:38,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:02:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand 27374 states and 35247 transitions. [2022-07-12 09:02:38,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:02:38,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:02:38,256 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:02:38,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:02:38,257 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:02:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:02:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash 138650479, now seen corresponding path program 1 times [2022-07-12 09:02:38,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:02:38,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764982469] [2022-07-12 09:02:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:02:38,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:02:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:02:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:02:38,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:02:38,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764982469] [2022-07-12 09:02:38,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764982469] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:02:38,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139911342] [2022-07-12 09:02:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:02:38,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:02:38,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:02:38,586 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:02:38,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:02:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:02:38,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-12 09:02:38,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:02:40,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:02:40,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:02:41,673 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:02:41,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139911342] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:02:41,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:02:41,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 19] total 48 [2022-07-12 09:02:41,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492016146] [2022-07-12 09:02:41,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:02:41,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-12 09:02:41,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:02:41,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-12 09:02:41,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1958, Unknown=0, NotChecked=0, Total=2256 [2022-07-12 09:02:41,675 INFO L87 Difference]: Start difference. First operand 27374 states and 35247 transitions. Second operand has 48 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 48 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:32,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:03:32,980 INFO L93 Difference]: Finished difference Result 171103 states and 212166 transitions. [2022-07-12 09:03:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 368 states. [2022-07-12 09:03:32,981 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 48 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 09:03:32,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:03:33,201 INFO L225 Difference]: With dead ends: 171103 [2022-07-12 09:03:33,201 INFO L226 Difference]: Without dead ends: 152421 [2022-07-12 09:03:33,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72160 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=17320, Invalid=147922, Unknown=0, NotChecked=0, Total=165242 [2022-07-12 09:03:33,245 INFO L413 NwaCegarLoop]: 2052 mSDtfsCounter, 26352 mSDsluCounter, 33848 mSDsCounter, 0 mSdLazyCounter, 4519 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26352 SdHoareTripleChecker+Valid, 35900 SdHoareTripleChecker+Invalid, 5290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 4519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:03:33,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26352 Valid, 35900 Invalid, 5290 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [771 Valid, 4519 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 09:03:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152421 states. [2022-07-12 09:03:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152421 to 36323. [2022-07-12 09:03:40,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36323 states, 36321 states have (on average 1.2787918834833842) internal successors, (46447), 36322 states have internal predecessors, (46447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:40,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36323 states to 36323 states and 46447 transitions. [2022-07-12 09:03:40,700 INFO L78 Accepts]: Start accepts. Automaton has 36323 states and 46447 transitions. Word has length 67 [2022-07-12 09:03:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:03:40,700 INFO L495 AbstractCegarLoop]: Abstraction has 36323 states and 46447 transitions. [2022-07-12 09:03:40,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 48 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 36323 states and 46447 transitions. [2022-07-12 09:03:40,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:03:40,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:03:40,702 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:03:40,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-12 09:03:40,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:03:40,916 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:03:40,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:03:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash -113994759, now seen corresponding path program 1 times [2022-07-12 09:03:40,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:03:40,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316354574] [2022-07-12 09:03:40,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:03:40,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:03:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:03:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:03:40,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:03:40,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316354574] [2022-07-12 09:03:40,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316354574] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:03:40,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:03:40,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:03:40,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893822492] [2022-07-12 09:03:40,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:03:40,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:03:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:03:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:03:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:03:40,969 INFO L87 Difference]: Start difference. First operand 36323 states and 46447 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:45,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:03:45,685 INFO L93 Difference]: Finished difference Result 61960 states and 78906 transitions. [2022-07-12 09:03:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:03:45,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 09:03:45,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:03:45,723 INFO L225 Difference]: With dead ends: 61960 [2022-07-12 09:03:45,723 INFO L226 Difference]: Without dead ends: 27166 [2022-07-12 09:03:45,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:03:45,746 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4504 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4504 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:03:45,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4504 Valid, 2959 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:03:45,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27166 states. [2022-07-12 09:03:50,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27166 to 27166. [2022-07-12 09:03:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27166 states, 27164 states have (on average 1.271130908555441) internal successors, (34529), 27165 states have internal predecessors, (34529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27166 states to 27166 states and 34529 transitions. [2022-07-12 09:03:50,599 INFO L78 Accepts]: Start accepts. Automaton has 27166 states and 34529 transitions. Word has length 67 [2022-07-12 09:03:50,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:03:50,600 INFO L495 AbstractCegarLoop]: Abstraction has 27166 states and 34529 transitions. [2022-07-12 09:03:50,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 27166 states and 34529 transitions. [2022-07-12 09:03:50,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:03:50,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:03:50,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:03:50,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:03:50,601 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:03:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:03:50,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1235279528, now seen corresponding path program 1 times [2022-07-12 09:03:50,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:03:50,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403882310] [2022-07-12 09:03:50,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:03:50,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:03:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:03:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:03:50,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:03:50,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403882310] [2022-07-12 09:03:50,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403882310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:03:50,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:03:50,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:03:50,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58541120] [2022-07-12 09:03:50,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:03:50,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:03:50,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:03:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:03:50,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:03:50,621 INFO L87 Difference]: Start difference. First operand 27166 states and 34529 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:52,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:03:52,410 INFO L93 Difference]: Finished difference Result 35551 states and 44912 transitions. [2022-07-12 09:03:52,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:03:52,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 09:03:52,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:03:52,421 INFO L225 Difference]: With dead ends: 35551 [2022-07-12 09:03:52,421 INFO L226 Difference]: Without dead ends: 9914 [2022-07-12 09:03:52,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:03:52,437 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 16 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:03:52,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3018 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:03:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9914 states. [2022-07-12 09:03:54,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9914 to 9333. [2022-07-12 09:03:54,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9333 states, 9331 states have (on average 1.2864644732611725) internal successors, (12004), 9332 states have internal predecessors, (12004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9333 states to 9333 states and 12004 transitions. [2022-07-12 09:03:54,217 INFO L78 Accepts]: Start accepts. Automaton has 9333 states and 12004 transitions. Word has length 68 [2022-07-12 09:03:54,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:03:54,217 INFO L495 AbstractCegarLoop]: Abstraction has 9333 states and 12004 transitions. [2022-07-12 09:03:54,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9333 states and 12004 transitions. [2022-07-12 09:03:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:03:54,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:03:54,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:03:54,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:03:54,220 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:03:54,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:03:54,220 INFO L85 PathProgramCache]: Analyzing trace with hash 745122100, now seen corresponding path program 1 times [2022-07-12 09:03:54,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:03:54,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509120801] [2022-07-12 09:03:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:03:54,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:03:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:03:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 09:03:54,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:03:54,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509120801] [2022-07-12 09:03:54,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509120801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:03:54,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:03:54,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:03:54,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175183763] [2022-07-12 09:03:54,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:03:54,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:03:54,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:03:54,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:03:54,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:03:54,276 INFO L87 Difference]: Start difference. First operand 9333 states and 12004 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:55,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:03:55,454 INFO L93 Difference]: Finished difference Result 14271 states and 17986 transitions. [2022-07-12 09:03:55,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:03:55,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 09:03:55,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:03:55,461 INFO L225 Difference]: With dead ends: 14271 [2022-07-12 09:03:55,461 INFO L226 Difference]: Without dead ends: 6491 [2022-07-12 09:03:55,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:03:55,536 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 4533 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4533 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:03:55,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4533 Valid, 2954 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:03:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6491 states. [2022-07-12 09:03:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6491 to 6491. [2022-07-12 09:03:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6491 states, 6489 states have (on average 1.291878563723224) internal successors, (8383), 6490 states have internal predecessors, (8383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:56,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6491 states to 6491 states and 8383 transitions. [2022-07-12 09:03:56,614 INFO L78 Accepts]: Start accepts. Automaton has 6491 states and 8383 transitions. Word has length 68 [2022-07-12 09:03:56,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:03:56,615 INFO L495 AbstractCegarLoop]: Abstraction has 6491 states and 8383 transitions. [2022-07-12 09:03:56,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:03:56,615 INFO L276 IsEmpty]: Start isEmpty. Operand 6491 states and 8383 transitions. [2022-07-12 09:03:56,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 09:03:56,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:03:56,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:03:56,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:03:56,616 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:03:56,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:03:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1362739138, now seen corresponding path program 1 times [2022-07-12 09:03:56,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:03:56,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944447460] [2022-07-12 09:03:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:03:56,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:03:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:03:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:03:56,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:03:56,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944447460] [2022-07-12 09:03:56,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944447460] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:03:56,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480914887] [2022-07-12 09:03:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:03:56,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:03:56,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:03:56,825 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:03:56,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 09:03:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:03:56,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 09:03:56,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:03:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:03:57,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:03:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:03:58,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480914887] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:03:58,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:03:58,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 28 [2022-07-12 09:03:58,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447324440] [2022-07-12 09:03:58,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:03:58,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 09:03:58,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:03:58,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 09:03:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2022-07-12 09:03:58,423 INFO L87 Difference]: Start difference. First operand 6491 states and 8383 transitions. Second operand has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:02,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:02,291 INFO L93 Difference]: Finished difference Result 12102 states and 14912 transitions. [2022-07-12 09:04:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 09:04:02,291 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 09:04:02,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:02,302 INFO L225 Difference]: With dead ends: 12102 [2022-07-12 09:04:02,303 INFO L226 Difference]: Without dead ends: 9547 [2022-07-12 09:04:02,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=436, Invalid=1634, Unknown=0, NotChecked=0, Total=2070 [2022-07-12 09:04:02,312 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 9449 mSDsluCounter, 9644 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9449 SdHoareTripleChecker+Valid, 11246 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:02,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9449 Valid, 11246 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:04:02,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9547 states. [2022-07-12 09:04:03,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 6761. [2022-07-12 09:04:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6761 states, 6759 states have (on average 1.2870247077970114) internal successors, (8699), 6760 states have internal predecessors, (8699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 8699 transitions. [2022-07-12 09:04:03,712 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 8699 transitions. Word has length 69 [2022-07-12 09:04:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:03,713 INFO L495 AbstractCegarLoop]: Abstraction has 6761 states and 8699 transitions. [2022-07-12 09:04:03,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.392857142857143) internal successors, (179), 28 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 8699 transitions. [2022-07-12 09:04:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 09:04:03,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:03,715 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:03,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 09:04:03,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-12 09:04:03,927 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:03,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:03,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1410105670, now seen corresponding path program 1 times [2022-07-12 09:04:03,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:03,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68981557] [2022-07-12 09:04:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:03,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:03,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68981557] [2022-07-12 09:04:03,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68981557] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:04:03,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936975843] [2022-07-12 09:04:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:03,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:04:03,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:04:04,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:04:04,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 09:04:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:04,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:04:04,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:04:04,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:04,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:04:04,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936975843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:04,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:04:04,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-12 09:04:04,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526193358] [2022-07-12 09:04:04,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:04,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:04:04,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:04,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:04:04,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:04:04,086 INFO L87 Difference]: Start difference. First operand 6761 states and 8699 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:07,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:07,839 INFO L93 Difference]: Finished difference Result 9767 states and 13626 transitions. [2022-07-12 09:04:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:04:07,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-07-12 09:04:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:07,847 INFO L225 Difference]: With dead ends: 9767 [2022-07-12 09:04:07,847 INFO L226 Difference]: Without dead ends: 8263 [2022-07-12 09:04:07,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:04:07,850 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 856 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:07,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 550 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:04:07,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8263 states. [2022-07-12 09:04:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8263 to 8263. [2022-07-12 09:04:09,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8263 states, 8261 states have (on average 1.2733325263285316) internal successors, (10519), 8262 states have internal predecessors, (10519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:09,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8263 states to 8263 states and 10519 transitions. [2022-07-12 09:04:09,187 INFO L78 Accepts]: Start accepts. Automaton has 8263 states and 10519 transitions. Word has length 91 [2022-07-12 09:04:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:09,188 INFO L495 AbstractCegarLoop]: Abstraction has 8263 states and 10519 transitions. [2022-07-12 09:04:09,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:09,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8263 states and 10519 transitions. [2022-07-12 09:04:09,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 09:04:09,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:09,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:09,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-12 09:04:09,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:04:09,405 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:09,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:09,405 INFO L85 PathProgramCache]: Analyzing trace with hash 213880004, now seen corresponding path program 1 times [2022-07-12 09:04:09,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:09,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635080415] [2022-07-12 09:04:09,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:09,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:09,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:09,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:09,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635080415] [2022-07-12 09:04:09,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635080415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:09,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:09,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:04:09,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998627279] [2022-07-12 09:04:09,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:09,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:04:09,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:09,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:04:09,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:09,437 INFO L87 Difference]: Start difference. First operand 8263 states and 10519 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:13,127 INFO L93 Difference]: Finished difference Result 14273 states and 19086 transitions. [2022-07-12 09:04:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:04:13,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-12 09:04:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:13,141 INFO L225 Difference]: With dead ends: 14273 [2022-07-12 09:04:13,141 INFO L226 Difference]: Without dead ends: 11267 [2022-07-12 09:04:13,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:04:13,146 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 848 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:13,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 523 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 09:04:13,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11267 states. [2022-07-12 09:04:14,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11267 to 11267. [2022-07-12 09:04:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11267 states, 11265 states have (on average 1.244207723035952) internal successors, (14016), 11266 states have internal predecessors, (14016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11267 states to 11267 states and 14016 transitions. [2022-07-12 09:04:14,524 INFO L78 Accepts]: Start accepts. Automaton has 11267 states and 14016 transitions. Word has length 95 [2022-07-12 09:04:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:14,525 INFO L495 AbstractCegarLoop]: Abstraction has 11267 states and 14016 transitions. [2022-07-12 09:04:14,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 11267 states and 14016 transitions. [2022-07-12 09:04:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 09:04:14,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:14,526 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:14,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:04:14,527 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:14,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash 957956051, now seen corresponding path program 1 times [2022-07-12 09:04:14,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:14,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838449261] [2022-07-12 09:04:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:14,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:14,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838449261] [2022-07-12 09:04:14,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838449261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:04:14,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:04:14,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:04:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715407327] [2022-07-12 09:04:14,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:04:14,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:04:14,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:04:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:04:14,610 INFO L87 Difference]: Start difference. First operand 11267 states and 14016 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:20,078 INFO L93 Difference]: Finished difference Result 21783 states and 26861 transitions. [2022-07-12 09:04:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:04:20,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-12 09:04:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:20,094 INFO L225 Difference]: With dead ends: 21783 [2022-07-12 09:04:20,094 INFO L226 Difference]: Without dead ends: 15773 [2022-07-12 09:04:20,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:04:20,100 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 4585 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5369 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4585 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 5369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:20,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4585 Valid, 795 Invalid, 5631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 5369 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 09:04:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15773 states. [2022-07-12 09:04:21,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15773 to 15022. [2022-07-12 09:04:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15022 states, 15020 states have (on average 1.197936085219707) internal successors, (17993), 15021 states have internal predecessors, (17993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15022 states to 15022 states and 17993 transitions. [2022-07-12 09:04:21,695 INFO L78 Accepts]: Start accepts. Automaton has 15022 states and 17993 transitions. Word has length 101 [2022-07-12 09:04:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:21,696 INFO L495 AbstractCegarLoop]: Abstraction has 15022 states and 17993 transitions. [2022-07-12 09:04:21,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 15022 states and 17993 transitions. [2022-07-12 09:04:21,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 09:04:21,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:21,698 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:21,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:04:21,698 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:21,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:21,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1940957519, now seen corresponding path program 1 times [2022-07-12 09:04:21,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:21,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395775041] [2022-07-12 09:04:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:21,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:21,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:21,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395775041] [2022-07-12 09:04:21,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395775041] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:04:21,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178472067] [2022-07-12 09:04:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:21,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:04:21,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:04:21,855 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:04:21,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 09:04:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:21,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-12 09:04:21,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:04:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:22,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:04:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:23,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178472067] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:04:23,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:04:23,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-07-12 09:04:23,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706812502] [2022-07-12 09:04:23,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:04:23,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 09:04:23,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:04:23,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 09:04:23,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2022-07-12 09:04:23,659 INFO L87 Difference]: Start difference. First operand 15022 states and 17993 transitions. Second operand has 29 states, 29 states have (on average 9.620689655172415) internal successors, (279), 28 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:04:27,308 INFO L93 Difference]: Finished difference Result 18929 states and 22668 transitions. [2022-07-12 09:04:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 09:04:27,309 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.620689655172415) internal successors, (279), 28 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-07-12 09:04:27,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:04:27,324 INFO L225 Difference]: With dead ends: 18929 [2022-07-12 09:04:27,324 INFO L226 Difference]: Without dead ends: 15551 [2022-07-12 09:04:27,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=456, Invalid=1436, Unknown=0, NotChecked=0, Total=1892 [2022-07-12 09:04:27,330 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 12470 mSDsluCounter, 10748 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12470 SdHoareTripleChecker+Valid, 12278 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:04:27,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12470 Valid, 12278 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:04:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15551 states. [2022-07-12 09:04:29,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15551 to 15022. [2022-07-12 09:04:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15022 states, 15020 states have (on average 1.1947403462050599) internal successors, (17945), 15021 states have internal predecessors, (17945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15022 states to 15022 states and 17945 transitions. [2022-07-12 09:04:29,305 INFO L78 Accepts]: Start accepts. Automaton has 15022 states and 17945 transitions. Word has length 111 [2022-07-12 09:04:29,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:04:29,306 INFO L495 AbstractCegarLoop]: Abstraction has 15022 states and 17945 transitions. [2022-07-12 09:04:29,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.620689655172415) internal successors, (279), 28 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:04:29,306 INFO L276 IsEmpty]: Start isEmpty. Operand 15022 states and 17945 transitions. [2022-07-12 09:04:29,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 09:04:29,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:04:29,308 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:04:29,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-12 09:04:29,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:04:29,524 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:04:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:04:29,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1600436991, now seen corresponding path program 1 times [2022-07-12 09:04:29,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:04:29,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449365264] [2022-07-12 09:04:29,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:29,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:04:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:04:29,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:04:29,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449365264] [2022-07-12 09:04:29,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449365264] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:04:29,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116231266] [2022-07-12 09:04:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:04:29,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:04:29,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:04:29,735 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:04:29,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 09:04:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:04:29,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-12 09:04:29,824 INFO L286 TraceCheckSpWp]: Computing forward predicates...