./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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.8.ufo.UNBOUNDED.pals+Problem12_label06.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 6d316a7ba22efd80f1b38cf51bd9ff0ce90b0827d98cb289348ffc09e69061f8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:05:47,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:05:47,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:05:47,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:05:47,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:05:47,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:05:47,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:05:47,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:05:47,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:05:47,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:05:47,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:05:47,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:05:47,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:05:47,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:05:47,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:05:47,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:05:47,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:05:47,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:05:47,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:05:47,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:05:47,559 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:05:47,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:05:47,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:05:47,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:05:47,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:05:47,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:05:47,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:05:47,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:05:47,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:05:47,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:05:47,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:05:47,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:05:47,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:05:47,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:05:47,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:05:47,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:05:47,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:05:47,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:05:47,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:05:47,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:05:47,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:05:47,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:05:47,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:05:47,603 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:05:47,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:05:47,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:05:47,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:05:47,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:05:47,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:05:47,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:05:47,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:05:47,606 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:05:47,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:05:47,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:05:47,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:05:47,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:05:47,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:05:47,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:05:47,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:05:47,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:05:47,608 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:05:47,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:05:47,608 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:05:47,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:05:47,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:05:47,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:05:47,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:05:47,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:05:47,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:05:47,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:05:47,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:05:47,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:05:47,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:05:47,611 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:05:47,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:05:47,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:05:47,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d316a7ba22efd80f1b38cf51bd9ff0ce90b0827d98cb289348ffc09e69061f8 [2022-07-13 21:05:47,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:05:47,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:05:47,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:05:47,827 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:05:47,828 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:05:47,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-07-13 21:05:47,886 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f78b1fc/d7578b8edc4e4de6b8a29a764ef6f653/FLAGd2116d469 [2022-07-13 21:05:48,458 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:05:48,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-07-13 21:05:48,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f78b1fc/d7578b8edc4e4de6b8a29a764ef6f653/FLAGd2116d469 [2022-07-13 21:05:48,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f78b1fc/d7578b8edc4e4de6b8a29a764ef6f653 [2022-07-13 21:05:48,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:05:48,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:05:48,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:05:48,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:05:48,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:05:48,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:05:48" (1/1) ... [2022-07-13 21:05:48,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c080f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:48, skipping insertion in model container [2022-07-13 21:05:48,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:05:48" (1/1) ... [2022-07-13 21:05:48,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:05:48,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:05:49,300 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.8.ufo.UNBOUNDED.pals+Problem12_label06.c[26888,26901] [2022-07-13 21:05:49,318 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.8.ufo.UNBOUNDED.pals+Problem12_label06.c[29705,29718] [2022-07-13 21:05:49,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:05:49,781 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:05:49,827 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.8.ufo.UNBOUNDED.pals+Problem12_label06.c[26888,26901] [2022-07-13 21:05:49,834 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.8.ufo.UNBOUNDED.pals+Problem12_label06.c[29705,29718] [2022-07-13 21:05:50,135 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:05:50,154 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:05:50,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50 WrapperNode [2022-07-13 21:05:50,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:05:50,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:05:50,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:05:50,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:05:50,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (1/1) ... [2022-07-13 21:05:50,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (1/1) ... [2022-07-13 21:05:50,554 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5279 [2022-07-13 21:05:50,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:05:50,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:05:50,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:05:50,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:05:50,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (1/1) ... [2022-07-13 21:05:50,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (1/1) ... [2022-07-13 21:05:50,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (1/1) ... [2022-07-13 21:05:50,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (1/1) ... [2022-07-13 21:05:50,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (1/1) ... [2022-07-13 21:05:50,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (1/1) ... [2022-07-13 21:05:50,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (1/1) ... [2022-07-13 21:05:51,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:05:51,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:05:51,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:05:51,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:05:51,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (1/1) ... [2022-07-13 21:05:51,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:05:51,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:05:51,064 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) [2022-07-13 21:05:51,080 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 [2022-07-13 21:05:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:05:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:05:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:05:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:05:51,200 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:05:51,202 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:05:53,906 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:05:53,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:05:53,919 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 21:05:53,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:05:53 BoogieIcfgContainer [2022-07-13 21:05:53,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:05:53,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:05:53,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:05:53,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:05:53,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:05:48" (1/3) ... [2022-07-13 21:05:53,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57efae7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:05:53, skipping insertion in model container [2022-07-13 21:05:53,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:05:50" (2/3) ... [2022-07-13 21:05:53,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57efae7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:05:53, skipping insertion in model container [2022-07-13 21:05:53,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:05:53" (3/3) ... [2022-07-13 21:05:53,928 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-07-13 21:05:53,938 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:05:53,938 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:05:53,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:05:53,993 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@43dfe6ca, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@551ea503 [2022-07-13 21:05:53,993 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:05:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 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) [2022-07-13 21:05:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 21:05:54,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:05:54,007 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] [2022-07-13 21:05:54,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:05:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:05:54,011 INFO L85 PathProgramCache]: Analyzing trace with hash -25024235, now seen corresponding path program 1 times [2022-07-13 21:05:54,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:05:54,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655847622] [2022-07-13 21:05:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:05:54,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:05:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:05:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:05:54,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:05:54,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655847622] [2022-07-13 21:05:54,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655847622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:05:54,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:05:54,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:05:54,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703448805] [2022-07-13 21:05:54,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:05:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:05:54,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:05:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:05:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:05:54,236 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 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 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2022-07-13 21:05:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:05:57,011 INFO L93 Difference]: Finished difference Result 2616 states and 5018 transitions. [2022-07-13 21:05:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:05:57,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2022-07-13 21:05:57,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:05:57,038 INFO L225 Difference]: With dead ends: 2616 [2022-07-13 21:05:57,038 INFO L226 Difference]: Without dead ends: 1650 [2022-07-13 21:05:57,044 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 [2022-07-13 21:05:57,046 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1126 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:05:57,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 410 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 21:05:57,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-07-13 21:05:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-07-13 21:05:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.8385922330097086) internal successors, (3030), 1649 states have internal predecessors, (3030), 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) [2022-07-13 21:05:57,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 3030 transitions. [2022-07-13 21:05:57,159 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 3030 transitions. Word has length 24 [2022-07-13 21:05:57,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:05:57,160 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 3030 transitions. [2022-07-13 21:05:57,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2022-07-13 21:05:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 3030 transitions. [2022-07-13 21:05:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 21:05:57,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:05:57,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:05:57,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:05:57,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:05:57,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:05:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2022-07-13 21:05:57,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:05:57,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633096232] [2022-07-13 21:05:57,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:05:57,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:05:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:05:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:05:57,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:05:57,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633096232] [2022-07-13 21:05:57,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633096232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:05:57,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:05:57,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:05:57,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020012771] [2022-07-13 21:05:57,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:05:57,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:05:57,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:05:57,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:05:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:05:57,305 INFO L87 Difference]: Start difference. First operand 1650 states and 3030 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2022-07-13 21:05:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:05:57,369 INFO L93 Difference]: Finished difference Result 1732 states and 3158 transitions. [2022-07-13 21:05:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:05:57,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2022-07-13 21:05:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:05:57,375 INFO L225 Difference]: With dead ends: 1732 [2022-07-13 21:05:57,375 INFO L226 Difference]: Without dead ends: 1650 [2022-07-13 21:05:57,377 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 [2022-07-13 21:05:57,378 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:05:57,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:05:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-07-13 21:05:57,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-07-13 21:05:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.8015776699029127) internal successors, (2969), 1649 states have internal predecessors, (2969), 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) [2022-07-13 21:05:57,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2969 transitions. [2022-07-13 21:05:57,406 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2969 transitions. Word has length 46 [2022-07-13 21:05:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:05:57,406 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2969 transitions. [2022-07-13 21:05:57,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2022-07-13 21:05:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2969 transitions. [2022-07-13 21:05:57,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:05:57,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:05:57,413 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:05:57,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:05:57,413 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:05:57,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:05:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash -39136641, now seen corresponding path program 1 times [2022-07-13 21:05:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:05:57,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285034869] [2022-07-13 21:05:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:05:57,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:05:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:05:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:05:57,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:05:57,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285034869] [2022-07-13 21:05:57,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285034869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:05:57,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:05:57,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:05:57,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434743790] [2022-07-13 21:05:57,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:05:57,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:05:57,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:05:57,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:05:57,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:05:57,561 INFO L87 Difference]: Start difference. First operand 1650 states and 2969 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2022-07-13 21:05:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:05:59,893 INFO L93 Difference]: Finished difference Result 3905 states and 7084 transitions. [2022-07-13 21:05:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:05:59,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 93 [2022-07-13 21:05:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:05:59,902 INFO L225 Difference]: With dead ends: 3905 [2022-07-13 21:05:59,902 INFO L226 Difference]: Without dead ends: 2401 [2022-07-13 21:05:59,904 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 [2022-07-13 21:05:59,905 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 970 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:05:59,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 639 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:05:59,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2022-07-13 21:05:59,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2401. [2022-07-13 21:05:59,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 2399 states have (on average 1.4355981659024593) internal successors, (3444), 2400 states have internal predecessors, (3444), 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) [2022-07-13 21:05:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3444 transitions. [2022-07-13 21:05:59,945 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3444 transitions. Word has length 93 [2022-07-13 21:05:59,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:05:59,945 INFO L495 AbstractCegarLoop]: Abstraction has 2401 states and 3444 transitions. [2022-07-13 21:05:59,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2022-07-13 21:05:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3444 transitions. [2022-07-13 21:05:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 21:05:59,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:05:59,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:05:59,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:05:59,947 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:05:59,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:05:59,948 INFO L85 PathProgramCache]: Analyzing trace with hash 39614916, now seen corresponding path program 1 times [2022-07-13 21:05:59,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:05:59,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705809877] [2022-07-13 21:05:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:05:59,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:05:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:00,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:00,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705809877] [2022-07-13 21:06:00,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705809877] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:06:00,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785145489] [2022-07-13 21:06:00,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:00,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:06:00,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:06:00,050 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) [2022-07-13 21:06:00,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:06:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:00,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:06:00,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:06:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:00,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:06:00,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785145489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:00,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:06:00,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-13 21:06:00,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60612133] [2022-07-13 21:06:00,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:00,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:00,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:06:00,190 INFO L87 Difference]: Start difference. First operand 2401 states and 3444 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2022-07-13 21:06:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:02,743 INFO L93 Difference]: Finished difference Result 6909 states and 9945 transitions. [2022-07-13 21:06:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:02,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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 [2022-07-13 21:06:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:02,757 INFO L225 Difference]: With dead ends: 6909 [2022-07-13 21:06:02,758 INFO L226 Difference]: Without dead ends: 4654 [2022-07-13 21:06:02,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:06:02,762 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 938 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:02,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 809 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:06:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2022-07-13 21:06:02,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 4654. [2022-07-13 21:06:02,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 4652 states have (on average 1.2942820292347377) internal successors, (6021), 4653 states have internal predecessors, (6021), 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) [2022-07-13 21:06:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 6021 transitions. [2022-07-13 21:06:02,825 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 6021 transitions. Word has length 95 [2022-07-13 21:06:02,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:02,826 INFO L495 AbstractCegarLoop]: Abstraction has 4654 states and 6021 transitions. [2022-07-13 21:06:02,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2022-07-13 21:06:02,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 6021 transitions. [2022-07-13 21:06:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:06:02,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:02,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:02,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 21:06:03,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:06:03,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:03,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:03,044 INFO L85 PathProgramCache]: Analyzing trace with hash -514955373, now seen corresponding path program 1 times [2022-07-13 21:06:03,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:03,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684030436] [2022-07-13 21:06:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:03,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:03,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:03,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684030436] [2022-07-13 21:06:03,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684030436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:03,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:03,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732266936] [2022-07-13 21:06:03,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:03,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:06:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:06:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:06:03,171 INFO L87 Difference]: Start difference. First operand 4654 states and 6021 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 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) [2022-07-13 21:06:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:06,732 INFO L93 Difference]: Finished difference Result 14419 states and 18475 transitions. [2022-07-13 21:06:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 21:06:06,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 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 [2022-07-13 21:06:06,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:06,760 INFO L225 Difference]: With dead ends: 14419 [2022-07-13 21:06:06,761 INFO L226 Difference]: Without dead ends: 9911 [2022-07-13 21:06:06,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:06:06,770 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 2644 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4542 mSolverCounterSat, 710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2644 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 5252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 710 IncrementalHoareTripleChecker+Valid, 4542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:06,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2644 Valid, 494 Invalid, 5252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [710 Valid, 4542 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-13 21:06:06,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9911 states. [2022-07-13 21:06:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9911 to 9911. [2022-07-13 21:06:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9911 states, 9909 states have (on average 1.2338278332828743) internal successors, (12226), 9910 states have internal predecessors, (12226), 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) [2022-07-13 21:06:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9911 states to 9911 states and 12226 transitions. [2022-07-13 21:06:06,928 INFO L78 Accepts]: Start accepts. Automaton has 9911 states and 12226 transitions. Word has length 101 [2022-07-13 21:06:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:06,929 INFO L495 AbstractCegarLoop]: Abstraction has 9911 states and 12226 transitions. [2022-07-13 21:06:06,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 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) [2022-07-13 21:06:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 9911 states and 12226 transitions. [2022-07-13 21:06:06,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:06,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:06,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:06,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:06:06,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:06,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:06,935 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2022-07-13 21:06:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:06,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463077350] [2022-07-13 21:06:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:06,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:07,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:07,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:07,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463077350] [2022-07-13 21:06:07,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463077350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:07,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:07,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:07,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579380306] [2022-07-13 21:06:07,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:07,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:07,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:07,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:07,003 INFO L87 Difference]: Start difference. First operand 9911 states and 12226 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:07,052 INFO L93 Difference]: Finished difference Result 10061 states and 12464 transitions. [2022-07-13 21:06:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:07,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-07-13 21:06:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:07,089 INFO L225 Difference]: With dead ends: 10061 [2022-07-13 21:06:07,090 INFO L226 Difference]: Without dead ends: 9983 [2022-07-13 21:06:07,093 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 [2022-07-13 21:06:07,093 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 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 [2022-07-13 21:06:07,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9983 states. [2022-07-13 21:06:07,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9983 to 9981. [2022-07-13 21:06:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9981 states, 9979 states have (on average 1.2363964325082673) internal successors, (12338), 9980 states have internal predecessors, (12338), 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) [2022-07-13 21:06:07,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9981 states to 9981 states and 12338 transitions. [2022-07-13 21:06:07,232 INFO L78 Accepts]: Start accepts. Automaton has 9981 states and 12338 transitions. Word has length 106 [2022-07-13 21:06:07,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:07,232 INFO L495 AbstractCegarLoop]: Abstraction has 9981 states and 12338 transitions. [2022-07-13 21:06:07,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:07,233 INFO L276 IsEmpty]: Start isEmpty. Operand 9981 states and 12338 transitions. [2022-07-13 21:06:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:07,234 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:07,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:07,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:06:07,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:07,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2022-07-13 21:06:07,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:07,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375658021] [2022-07-13 21:06:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:07,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:07,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:07,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375658021] [2022-07-13 21:06:07,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375658021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:07,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:07,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:07,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625606153] [2022-07-13 21:06:07,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:07,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:07,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:07,298 INFO L87 Difference]: Start difference. First operand 9981 states and 12338 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:07,342 INFO L93 Difference]: Finished difference Result 10265 states and 12790 transitions. [2022-07-13 21:06:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:07,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-07-13 21:06:07,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:07,375 INFO L225 Difference]: With dead ends: 10265 [2022-07-13 21:06:07,375 INFO L226 Difference]: Without dead ends: 10117 [2022-07-13 21:06:07,378 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 [2022-07-13 21:06:07,379 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 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 [2022-07-13 21:06:07,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10117 states. [2022-07-13 21:06:07,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10117 to 10115. [2022-07-13 21:06:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10115 states, 10113 states have (on average 1.2410758429743893) internal successors, (12551), 10114 states have internal predecessors, (12551), 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) [2022-07-13 21:06:07,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10115 states to 10115 states and 12551 transitions. [2022-07-13 21:06:07,496 INFO L78 Accepts]: Start accepts. Automaton has 10115 states and 12551 transitions. Word has length 106 [2022-07-13 21:06:07,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:07,496 INFO L495 AbstractCegarLoop]: Abstraction has 10115 states and 12551 transitions. [2022-07-13 21:06:07,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:07,496 INFO L276 IsEmpty]: Start isEmpty. Operand 10115 states and 12551 transitions. [2022-07-13 21:06:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:07,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:07,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:07,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:06:07,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:07,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:07,499 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2022-07-13 21:06:07,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:07,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965059212] [2022-07-13 21:06:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:07,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:07,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:07,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:07,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:07,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965059212] [2022-07-13 21:06:07,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965059212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:07,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:07,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:07,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495518162] [2022-07-13 21:06:07,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:07,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:07,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:07,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:07,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:07,558 INFO L87 Difference]: Start difference. First operand 10115 states and 12551 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:07,603 INFO L93 Difference]: Finished difference Result 10655 states and 13409 transitions. [2022-07-13 21:06:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:07,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-07-13 21:06:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:07,617 INFO L225 Difference]: With dead ends: 10655 [2022-07-13 21:06:07,618 INFO L226 Difference]: Without dead ends: 10373 [2022-07-13 21:06:07,620 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 [2022-07-13 21:06:07,621 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 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 [2022-07-13 21:06:07,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10373 states. [2022-07-13 21:06:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10373 to 10371. [2022-07-13 21:06:07,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10371 states, 10369 states have (on average 1.2493972417783779) internal successors, (12955), 10370 states have internal predecessors, (12955), 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) [2022-07-13 21:06:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10371 states to 10371 states and 12955 transitions. [2022-07-13 21:06:07,774 INFO L78 Accepts]: Start accepts. Automaton has 10371 states and 12955 transitions. Word has length 106 [2022-07-13 21:06:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:07,775 INFO L495 AbstractCegarLoop]: Abstraction has 10371 states and 12955 transitions. [2022-07-13 21:06:07,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:07,775 INFO L276 IsEmpty]: Start isEmpty. Operand 10371 states and 12955 transitions. [2022-07-13 21:06:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:07,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:07,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:07,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:06:07,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:07,777 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2022-07-13 21:06:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:07,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508954753] [2022-07-13 21:06:07,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:07,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:07,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508954753] [2022-07-13 21:06:07,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508954753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:07,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:07,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620993794] [2022-07-13 21:06:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:07,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:07,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:07,815 INFO L87 Difference]: Start difference. First operand 10371 states and 12955 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:07,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:07,874 INFO L93 Difference]: Finished difference Result 11399 states and 14581 transitions. [2022-07-13 21:06:07,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:07,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-07-13 21:06:07,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:07,889 INFO L225 Difference]: With dead ends: 11399 [2022-07-13 21:06:07,889 INFO L226 Difference]: Without dead ends: 10861 [2022-07-13 21:06:07,892 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 [2022-07-13 21:06:07,893 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 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 [2022-07-13 21:06:07,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:07,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10861 states. [2022-07-13 21:06:08,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10861 to 10859. [2022-07-13 21:06:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10859 states, 10857 states have (on average 1.263608731693838) internal successors, (13719), 10858 states have internal predecessors, (13719), 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) [2022-07-13 21:06:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10859 states to 10859 states and 13719 transitions. [2022-07-13 21:06:08,030 INFO L78 Accepts]: Start accepts. Automaton has 10859 states and 13719 transitions. Word has length 106 [2022-07-13 21:06:08,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:08,030 INFO L495 AbstractCegarLoop]: Abstraction has 10859 states and 13719 transitions. [2022-07-13 21:06:08,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 10859 states and 13719 transitions. [2022-07-13 21:06:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:08,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:08,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:08,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:06:08,032 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:08,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2022-07-13 21:06:08,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:08,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531726766] [2022-07-13 21:06:08,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:08,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:08,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:08,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:08,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531726766] [2022-07-13 21:06:08,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531726766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:08,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:08,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:08,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415069003] [2022-07-13 21:06:08,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:08,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:08,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:08,069 INFO L87 Difference]: Start difference. First operand 10859 states and 13719 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:08,151 INFO L93 Difference]: Finished difference Result 12815 states and 16793 transitions. [2022-07-13 21:06:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:08,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-07-13 21:06:08,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:08,167 INFO L225 Difference]: With dead ends: 12815 [2022-07-13 21:06:08,167 INFO L226 Difference]: Without dead ends: 11789 [2022-07-13 21:06:08,171 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 [2022-07-13 21:06:08,172 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 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 [2022-07-13 21:06:08,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11789 states. [2022-07-13 21:06:08,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11789 to 11787. [2022-07-13 21:06:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11787 states, 11785 states have (on average 1.286296139159949) internal successors, (15159), 11786 states have internal predecessors, (15159), 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) [2022-07-13 21:06:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11787 states to 11787 states and 15159 transitions. [2022-07-13 21:06:08,315 INFO L78 Accepts]: Start accepts. Automaton has 11787 states and 15159 transitions. Word has length 106 [2022-07-13 21:06:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:08,316 INFO L495 AbstractCegarLoop]: Abstraction has 11787 states and 15159 transitions. [2022-07-13 21:06:08,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 11787 states and 15159 transitions. [2022-07-13 21:06:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:08,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:08,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:08,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:06:08,318 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:08,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2022-07-13 21:06:08,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:08,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431019683] [2022-07-13 21:06:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:08,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:08,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:08,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431019683] [2022-07-13 21:06:08,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431019683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:08,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:08,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661073107] [2022-07-13 21:06:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:08,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:08,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:08,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:08,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:08,361 INFO L87 Difference]: Start difference. First operand 11787 states and 15159 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:08,494 INFO L93 Difference]: Finished difference Result 15503 states and 20953 transitions. [2022-07-13 21:06:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:08,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-07-13 21:06:08,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:08,517 INFO L225 Difference]: With dead ends: 15503 [2022-07-13 21:06:08,517 INFO L226 Difference]: Without dead ends: 13549 [2022-07-13 21:06:08,524 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 [2022-07-13 21:06:08,525 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 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 [2022-07-13 21:06:08,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13549 states. [2022-07-13 21:06:08,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13549 to 13547. [2022-07-13 21:06:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13547 states, 13545 states have (on average 1.3187892211148025) internal successors, (17863), 13546 states have internal predecessors, (17863), 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) [2022-07-13 21:06:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13547 states to 13547 states and 17863 transitions. [2022-07-13 21:06:08,791 INFO L78 Accepts]: Start accepts. Automaton has 13547 states and 17863 transitions. Word has length 106 [2022-07-13 21:06:08,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:08,791 INFO L495 AbstractCegarLoop]: Abstraction has 13547 states and 17863 transitions. [2022-07-13 21:06:08,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:08,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13547 states and 17863 transitions. [2022-07-13 21:06:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:08,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:08,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:08,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:06:08,792 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:08,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2022-07-13 21:06:08,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:08,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609359254] [2022-07-13 21:06:08,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:08,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:08,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:08,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609359254] [2022-07-13 21:06:08,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609359254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:08,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:08,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:08,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341775600] [2022-07-13 21:06:08,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:08,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:08,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:08,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:08,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:08,839 INFO L87 Difference]: Start difference. First operand 13547 states and 17863 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:09,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:09,076 INFO L93 Difference]: Finished difference Result 20591 states and 28745 transitions. [2022-07-13 21:06:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:09,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 106 [2022-07-13 21:06:09,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:09,105 INFO L225 Difference]: With dead ends: 20591 [2022-07-13 21:06:09,105 INFO L226 Difference]: Without dead ends: 16877 [2022-07-13 21:06:09,114 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 [2022-07-13 21:06:09,115 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 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 [2022-07-13 21:06:09,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16877 states. [2022-07-13 21:06:09,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16877 to 16875. [2022-07-13 21:06:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16875 states, 16873 states have (on average 1.3583239495051265) internal successors, (22919), 16874 states have internal predecessors, (22919), 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) [2022-07-13 21:06:09,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16875 states to 16875 states and 22919 transitions. [2022-07-13 21:06:09,535 INFO L78 Accepts]: Start accepts. Automaton has 16875 states and 22919 transitions. Word has length 106 [2022-07-13 21:06:09,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:09,535 INFO L495 AbstractCegarLoop]: Abstraction has 16875 states and 22919 transitions. [2022-07-13 21:06:09,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-13 21:06:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 16875 states and 22919 transitions. [2022-07-13 21:06:09,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:09,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:09,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:09,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:06:09,537 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:09,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:09,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2022-07-13 21:06:09,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:09,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937819427] [2022-07-13 21:06:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:09,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:09,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:09,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937819427] [2022-07-13 21:06:09,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937819427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:09,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:09,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:06:09,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370352121] [2022-07-13 21:06:09,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:09,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:06:09,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:09,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:06:09,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:06:09,621 INFO L87 Difference]: Start difference. First operand 16875 states and 22919 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2022-07-13 21:06:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:13,916 INFO L93 Difference]: Finished difference Result 129547 states and 195991 transitions. [2022-07-13 21:06:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:06:13,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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 106 [2022-07-13 21:06:13,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:14,250 INFO L225 Difference]: With dead ends: 129547 [2022-07-13 21:06:14,250 INFO L226 Difference]: Without dead ends: 122505 [2022-07-13 21:06:14,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-07-13 21:06:14,277 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:14,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:06:14,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122505 states. [2022-07-13 21:06:15,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122505 to 23915. [2022-07-13 21:06:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23915 states, 23913 states have (on average 1.4000334546062811) internal successors, (33479), 23914 states have internal predecessors, (33479), 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) [2022-07-13 21:06:16,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23915 states to 23915 states and 33479 transitions. [2022-07-13 21:06:16,010 INFO L78 Accepts]: Start accepts. Automaton has 23915 states and 33479 transitions. Word has length 106 [2022-07-13 21:06:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:16,011 INFO L495 AbstractCegarLoop]: Abstraction has 23915 states and 33479 transitions. [2022-07-13 21:06:16,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2022-07-13 21:06:16,011 INFO L276 IsEmpty]: Start isEmpty. Operand 23915 states and 33479 transitions. [2022-07-13 21:06:16,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 21:06:16,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:16,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:16,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:06:16,012 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:16,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:16,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2022-07-13 21:06:16,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:16,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779161264] [2022-07-13 21:06:16,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:16,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:16,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:16,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:16,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779161264] [2022-07-13 21:06:16,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779161264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:16,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:16,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:16,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373770353] [2022-07-13 21:06:16,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:16,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:16,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:16,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:16,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:16,079 INFO L87 Difference]: Start difference. First operand 23915 states and 33479 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-13 21:06:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:18,274 INFO L93 Difference]: Finished difference Result 50671 states and 73801 transitions. [2022-07-13 21:06:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:18,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 108 [2022-07-13 21:06:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:18,322 INFO L225 Difference]: With dead ends: 50671 [2022-07-13 21:06:18,323 INFO L226 Difference]: Without dead ends: 36589 [2022-07-13 21:06:18,342 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 [2022-07-13 21:06:18,343 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:18,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36589 states. [2022-07-13 21:06:20,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36589 to 36331. [2022-07-13 21:06:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36331 states, 36329 states have (on average 1.4183434721572297) internal successors, (51527), 36330 states have internal predecessors, (51527), 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) [2022-07-13 21:06:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36331 states to 36331 states and 51527 transitions. [2022-07-13 21:06:20,808 INFO L78 Accepts]: Start accepts. Automaton has 36331 states and 51527 transitions. Word has length 108 [2022-07-13 21:06:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:20,808 INFO L495 AbstractCegarLoop]: Abstraction has 36331 states and 51527 transitions. [2022-07-13 21:06:20,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-13 21:06:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 36331 states and 51527 transitions. [2022-07-13 21:06:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 21:06:20,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:20,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:20,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:06:20,810 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:20,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:20,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2022-07-13 21:06:20,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:20,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997678525] [2022-07-13 21:06:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:20,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:21,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:21,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997678525] [2022-07-13 21:06:21,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997678525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:21,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:21,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:06:21,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040595697] [2022-07-13 21:06:21,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:21,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:06:21,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:21,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:06:21,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:06:21,043 INFO L87 Difference]: Start difference. First operand 36331 states and 51527 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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) [2022-07-13 21:06:23,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:23,304 INFO L93 Difference]: Finished difference Result 62831 states and 90953 transitions. [2022-07-13 21:06:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:06:23,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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 108 [2022-07-13 21:06:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:23,347 INFO L225 Difference]: With dead ends: 62831 [2022-07-13 21:06:23,348 INFO L226 Difference]: Without dead ends: 36333 [2022-07-13 21:06:23,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:06:23,371 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 9676 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9676 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:23,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9676 Valid, 2470 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:06:23,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36333 states. [2022-07-13 21:06:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36333 to 36331. [2022-07-13 21:06:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36331 states, 36329 states have (on average 1.4112967601640563) internal successors, (51271), 36330 states have internal predecessors, (51271), 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) [2022-07-13 21:06:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36331 states to 36331 states and 51271 transitions. [2022-07-13 21:06:25,927 INFO L78 Accepts]: Start accepts. Automaton has 36331 states and 51271 transitions. Word has length 108 [2022-07-13 21:06:25,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:25,927 INFO L495 AbstractCegarLoop]: Abstraction has 36331 states and 51271 transitions. [2022-07-13 21:06:25,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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) [2022-07-13 21:06:25,927 INFO L276 IsEmpty]: Start isEmpty. Operand 36331 states and 51271 transitions. [2022-07-13 21:06:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 21:06:25,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:25,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:25,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:06:25,929 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2022-07-13 21:06:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:25,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411550879] [2022-07-13 21:06:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:25,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:25,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411550879] [2022-07-13 21:06:25,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411550879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:25,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:25,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:06:25,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509552798] [2022-07-13 21:06:25,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:25,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:06:25,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:25,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:06:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:06:25,994 INFO L87 Difference]: Start difference. First operand 36331 states and 51271 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 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) [2022-07-13 21:06:28,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:28,486 INFO L93 Difference]: Finished difference Result 62829 states and 90440 transitions. [2022-07-13 21:06:28,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:06:28,486 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 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 109 [2022-07-13 21:06:28,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:28,536 INFO L225 Difference]: With dead ends: 62829 [2022-07-13 21:06:28,536 INFO L226 Difference]: Without dead ends: 36331 [2022-07-13 21:06:28,563 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 [2022-07-13 21:06:28,566 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 4752 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:28,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4752 Valid, 3123 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:28,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36331 states. [2022-07-13 21:06:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36331 to 36331. [2022-07-13 21:06:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36331 states, 36329 states have (on average 1.4042500481708828) internal successors, (51015), 36330 states have internal predecessors, (51015), 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) [2022-07-13 21:06:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36331 states to 36331 states and 51015 transitions. [2022-07-13 21:06:31,036 INFO L78 Accepts]: Start accepts. Automaton has 36331 states and 51015 transitions. Word has length 109 [2022-07-13 21:06:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:31,036 INFO L495 AbstractCegarLoop]: Abstraction has 36331 states and 51015 transitions. [2022-07-13 21:06:31,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 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) [2022-07-13 21:06:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 36331 states and 51015 transitions. [2022-07-13 21:06:31,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 21:06:31,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:31,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:31,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:06:31,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2022-07-13 21:06:31,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:31,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411921826] [2022-07-13 21:06:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:31,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:31,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411921826] [2022-07-13 21:06:31,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411921826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:31,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:31,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:06:31,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842855456] [2022-07-13 21:06:31,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:31,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:06:31,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:31,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:06:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:06:31,106 INFO L87 Difference]: Start difference. First operand 36331 states and 51015 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2022-07-13 21:06:35,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:35,226 INFO L93 Difference]: Finished difference Result 55957 states and 79484 transitions. [2022-07-13 21:06:35,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:06:35,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 109 [2022-07-13 21:06:35,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:35,314 INFO L225 Difference]: With dead ends: 55957 [2022-07-13 21:06:35,314 INFO L226 Difference]: Without dead ends: 55955 [2022-07-13 21:06:35,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:06:35,329 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:35,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55955 states. [2022-07-13 21:06:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55955 to 37099. [2022-07-13 21:06:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37099 states, 37097 states have (on average 1.3924306547699274) internal successors, (51655), 37098 states have internal predecessors, (51655), 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) [2022-07-13 21:06:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37099 states to 37099 states and 51655 transitions. [2022-07-13 21:06:38,278 INFO L78 Accepts]: Start accepts. Automaton has 37099 states and 51655 transitions. Word has length 109 [2022-07-13 21:06:38,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:38,279 INFO L495 AbstractCegarLoop]: Abstraction has 37099 states and 51655 transitions. [2022-07-13 21:06:38,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2022-07-13 21:06:38,279 INFO L276 IsEmpty]: Start isEmpty. Operand 37099 states and 51655 transitions. [2022-07-13 21:06:38,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 21:06:38,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:38,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:38,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:06:38,280 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:38,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:38,281 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2022-07-13 21:06:38,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:38,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710483327] [2022-07-13 21:06:38,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:38,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:38,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:38,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:38,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710483327] [2022-07-13 21:06:38,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710483327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:38,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:38,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:38,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675010513] [2022-07-13 21:06:38,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:38,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:38,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:38,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:38,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:38,324 INFO L87 Difference]: Start difference. First operand 37099 states and 51655 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2022-07-13 21:06:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:42,126 INFO L93 Difference]: Finished difference Result 64754 states and 92109 transitions. [2022-07-13 21:06:42,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:42,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2022-07-13 21:06:42,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:42,208 INFO L225 Difference]: With dead ends: 64754 [2022-07-13 21:06:42,208 INFO L226 Difference]: Without dead ends: 49903 [2022-07-13 21:06:42,236 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 [2022-07-13 21:06:42,236 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 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 [2022-07-13 21:06:42,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:42,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49903 states. [2022-07-13 21:06:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49903 to 49901. [2022-07-13 21:06:46,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49901 states, 49899 states have (on average 1.402052145333574) internal successors, (69961), 49900 states have internal predecessors, (69961), 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) [2022-07-13 21:06:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49901 states to 49901 states and 69961 transitions. [2022-07-13 21:06:46,734 INFO L78 Accepts]: Start accepts. Automaton has 49901 states and 69961 transitions. Word has length 110 [2022-07-13 21:06:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:46,734 INFO L495 AbstractCegarLoop]: Abstraction has 49901 states and 69961 transitions. [2022-07-13 21:06:46,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2022-07-13 21:06:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 49901 states and 69961 transitions. [2022-07-13 21:06:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 21:06:46,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:46,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:46,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:06:46,751 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:46,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:46,751 INFO L85 PathProgramCache]: Analyzing trace with hash 635734382, now seen corresponding path program 1 times [2022-07-13 21:06:46,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:46,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152829660] [2022-07-13 21:06:46,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:46,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 21:06:46,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:46,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152829660] [2022-07-13 21:06:46,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152829660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:46,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:46,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:06:46,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070876492] [2022-07-13 21:06:46,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:46,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:06:46,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:46,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:06:46,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:06:46,845 INFO L87 Difference]: Start difference. First operand 49901 states and 69961 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 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) [2022-07-13 21:07:18,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:18,473 INFO L93 Difference]: Finished difference Result 378111 states and 543570 transitions. [2022-07-13 21:07:18,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:07:18,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 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 149 [2022-07-13 21:07:18,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:19,311 INFO L225 Difference]: With dead ends: 378111 [2022-07-13 21:07:19,311 INFO L226 Difference]: Without dead ends: 338045 [2022-07-13 21:07:19,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:07:19,402 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 13299 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13299 SdHoareTripleChecker+Valid, 4446 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:19,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13299 Valid, 4446 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:07:19,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338045 states.