./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.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 760447de6aa5739f187553f004f72c898b25c540c6dba08996c9520ae7051de1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:05:18,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:05:18,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:05:18,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:05:18,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:05:18,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:05:18,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:05:18,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:05:18,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:05:18,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:05:19,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:05:19,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:05:19,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:05:19,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:05:19,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:05:19,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:05:19,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:05:19,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:05:19,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:05:19,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:05:19,037 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:05:19,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:05:19,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:05:19,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:05:19,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:05:19,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:05:19,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:05:19,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:05:19,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:05:19,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:05:19,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:05:19,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:05:19,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:05:19,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:05:19,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:05:19,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:05:19,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:05:19,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:05:19,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:05:19,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:05:19,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:05:19,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:05:19,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:05:19,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:05:19,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:05:19,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:05:19,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:05:19,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:05:19,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:05:19,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:05:19,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:05:19,126 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:05:19,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:05:19,127 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:05:19,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:05:19,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:05:19,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:05:19,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:05:19,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:05:19,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:05:19,128 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:05:19,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:05:19,128 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:05:19,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:05:19,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:05:19,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:05:19,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:05:19,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:05:19,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:05:19,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:05:19,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:05:19,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:05:19,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:05:19,130 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:05:19,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:05:19,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:05:19,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 760447de6aa5739f187553f004f72c898b25c540c6dba08996c9520ae7051de1 [2022-07-22 18:05:19,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:05:19,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:05:19,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:05:19,442 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:05:19,459 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:05:19,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c [2022-07-22 18:05:19,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c29b2bcf/eabedb3e5bc14f37ac0ecd05da88e835/FLAG460f82dd3 [2022-07-22 18:05:20,392 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:05:20,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c [2022-07-22 18:05:20,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c29b2bcf/eabedb3e5bc14f37ac0ecd05da88e835/FLAG460f82dd3 [2022-07-22 18:05:20,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c29b2bcf/eabedb3e5bc14f37ac0ecd05da88e835 [2022-07-22 18:05:20,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:05:20,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:05:20,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:05:20,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:05:20,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:05:20,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:05:20" (1/1) ... [2022-07-22 18:05:20,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109b775e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:20, skipping insertion in model container [2022-07-22 18:05:20,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:05:20" (1/1) ... [2022-07-22 18:05:20,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:05:20,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:05:20,929 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/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c[20047,20060] [2022-07-22 18:05:20,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:05:20,944 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:05:21,021 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/seq-mthreaded/pals_lcr.7.ufo.UNBOUNDED.pals.c[20047,20060] [2022-07-22 18:05:21,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:05:21,044 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:05:21,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21 WrapperNode [2022-07-22 18:05:21,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:05:21,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:05:21,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:05:21,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:05:21,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (1/1) ... [2022-07-22 18:05:21,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (1/1) ... [2022-07-22 18:05:21,131 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 451 [2022-07-22 18:05:21,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:05:21,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:05:21,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:05:21,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:05:21,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (1/1) ... [2022-07-22 18:05:21,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (1/1) ... [2022-07-22 18:05:21,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (1/1) ... [2022-07-22 18:05:21,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (1/1) ... [2022-07-22 18:05:21,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (1/1) ... [2022-07-22 18:05:21,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (1/1) ... [2022-07-22 18:05:21,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (1/1) ... [2022-07-22 18:05:21,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:05:21,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:05:21,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:05:21,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:05:21,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (1/1) ... [2022-07-22 18:05:21,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:05:21,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:05:21,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 18:05:21,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 18:05:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:05:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:05:21,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:05:21,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:05:21,573 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:05:21,575 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:05:22,365 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:05:22,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:05:22,376 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 18:05:22,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:05:22 BoogieIcfgContainer [2022-07-22 18:05:22,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:05:22,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:05:22,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:05:22,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:05:22,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:05:20" (1/3) ... [2022-07-22 18:05:22,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111e5e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:05:22, skipping insertion in model container [2022-07-22 18:05:22,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:05:21" (2/3) ... [2022-07-22 18:05:22,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111e5e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:05:22, skipping insertion in model container [2022-07-22 18:05:22,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:05:22" (3/3) ... [2022-07-22 18:05:22,398 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c [2022-07-22 18:05:22,410 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:05:22,419 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:05:22,497 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:05:22,518 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@59921b86, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63682038 [2022-07-22 18:05:22,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:05:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 128 states have (on average 1.75) internal successors, (224), 129 states have internal predecessors, (224), 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) [2022-07-22 18:05:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 18:05:22,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:22,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:05:22,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:22,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1880075128, now seen corresponding path program 1 times [2022-07-22 18:05:22,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:22,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378468107] [2022-07-22 18:05:22,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:22,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:22,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:22,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378468107] [2022-07-22 18:05:22,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378468107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:22,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:22,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 18:05:22,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456471142] [2022-07-22 18:05:22,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:22,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 18:05:22,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:23,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 18:05:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:05:23,012 INFO L87 Difference]: Start difference. First operand has 130 states, 128 states have (on average 1.75) internal successors, (224), 129 states have internal predecessors, (224), 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 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:23,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:23,078 INFO L93 Difference]: Finished difference Result 201 states and 339 transitions. [2022-07-22 18:05:23,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 18:05:23,081 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-22 18:05:23,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:23,091 INFO L225 Difference]: With dead ends: 201 [2022-07-22 18:05:23,095 INFO L226 Difference]: Without dead ends: 126 [2022-07-22 18:05:23,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 18:05:23,116 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:23,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:23,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-22 18:05:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-22 18:05:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.736) internal successors, (217), 125 states have internal predecessors, (217), 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) [2022-07-22 18:05:23,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 217 transitions. [2022-07-22 18:05:23,222 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 217 transitions. Word has length 41 [2022-07-22 18:05:23,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:23,222 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 217 transitions. [2022-07-22 18:05:23,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:23,223 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 217 transitions. [2022-07-22 18:05:23,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 18:05:23,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:23,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:05:23,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:05:23,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:23,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:23,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2020525382, now seen corresponding path program 1 times [2022-07-22 18:05:23,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:23,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410757621] [2022-07-22 18:05:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:23,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:23,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:23,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410757621] [2022-07-22 18:05:23,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410757621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:23,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:23,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:05:23,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016453547] [2022-07-22 18:05:23,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:23,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:05:23,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:23,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:05:23,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:05:23,411 INFO L87 Difference]: Start difference. First operand 126 states and 217 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:23,563 INFO L93 Difference]: Finished difference Result 200 states and 332 transitions. [2022-07-22 18:05:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:05:23,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-22 18:05:23,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:23,565 INFO L225 Difference]: With dead ends: 200 [2022-07-22 18:05:23,565 INFO L226 Difference]: Without dead ends: 126 [2022-07-22 18:05:23,566 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 [2022-07-22 18:05:23,567 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 3 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:23,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 807 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:23,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-22 18:05:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-22 18:05:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.336) internal successors, (167), 125 states have internal predecessors, (167), 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) [2022-07-22 18:05:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2022-07-22 18:05:23,575 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 41 [2022-07-22 18:05:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:23,575 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2022-07-22 18:05:23,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:05:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2022-07-22 18:05:23,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 18:05:23,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:23,591 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] [2022-07-22 18:05:23,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:05:23,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:23,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:23,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1655570070, now seen corresponding path program 1 times [2022-07-22 18:05:23,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:23,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569188967] [2022-07-22 18:05:23,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:23,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:23,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:23,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569188967] [2022-07-22 18:05:23,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569188967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:23,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:23,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:23,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428295500] [2022-07-22 18:05:23,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:23,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:23,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:23,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:23,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:23,888 INFO L87 Difference]: Start difference. First operand 126 states and 167 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-07-22 18:05:23,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:23,942 INFO L93 Difference]: Finished difference Result 260 states and 379 transitions. [2022-07-22 18:05:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:23,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2022-07-22 18:05:23,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:23,945 INFO L225 Difference]: With dead ends: 260 [2022-07-22 18:05:23,945 INFO L226 Difference]: Without dead ends: 190 [2022-07-22 18:05:23,945 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 [2022-07-22 18:05:23,949 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 81 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 325 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 [2022-07-22 18:05:23,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 325 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-22 18:05:23,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-07-22 18:05:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4224598930481283) internal successors, (266), 187 states have internal predecessors, (266), 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) [2022-07-22 18:05:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 266 transitions. [2022-07-22 18:05:23,979 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 266 transitions. Word has length 90 [2022-07-22 18:05:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:23,988 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 266 transitions. [2022-07-22 18:05:23,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-07-22 18:05:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 266 transitions. [2022-07-22 18:05:23,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 18:05:23,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:23,995 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] [2022-07-22 18:05:23,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:05:23,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1317776928, now seen corresponding path program 1 times [2022-07-22 18:05:23,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:23,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451504196] [2022-07-22 18:05:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:24,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:24,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:24,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451504196] [2022-07-22 18:05:24,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451504196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:24,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:24,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:24,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223455516] [2022-07-22 18:05:24,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:24,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:24,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:24,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:24,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:24,248 INFO L87 Difference]: Start difference. First operand 188 states and 266 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-07-22 18:05:24,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:24,300 INFO L93 Difference]: Finished difference Result 440 states and 666 transitions. [2022-07-22 18:05:24,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:24,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2022-07-22 18:05:24,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:24,304 INFO L225 Difference]: With dead ends: 440 [2022-07-22 18:05:24,306 INFO L226 Difference]: Without dead ends: 308 [2022-07-22 18:05:24,307 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 [2022-07-22 18:05:24,309 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 77 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 324 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 [2022-07-22 18:05:24,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 324 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-22 18:05:24,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 306. [2022-07-22 18:05:24,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.4852459016393442) internal successors, (453), 305 states have internal predecessors, (453), 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) [2022-07-22 18:05:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 453 transitions. [2022-07-22 18:05:24,377 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 453 transitions. Word has length 90 [2022-07-22 18:05:24,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:24,379 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 453 transitions. [2022-07-22 18:05:24,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-07-22 18:05:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 453 transitions. [2022-07-22 18:05:24,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 18:05:24,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:24,382 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] [2022-07-22 18:05:24,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:05:24,382 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:24,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash -99791530, now seen corresponding path program 1 times [2022-07-22 18:05:24,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:24,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917454358] [2022-07-22 18:05:24,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:24,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:24,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:24,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917454358] [2022-07-22 18:05:24,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917454358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:24,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:24,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:05:24,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975169523] [2022-07-22 18:05:24,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:24,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:05:24,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:24,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:05:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:05:24,620 INFO L87 Difference]: Start difference. First operand 306 states and 453 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 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) [2022-07-22 18:05:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:25,435 INFO L93 Difference]: Finished difference Result 3806 states and 6011 transitions. [2022-07-22 18:05:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:05:25,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 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 90 [2022-07-22 18:05:25,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:25,452 INFO L225 Difference]: With dead ends: 3806 [2022-07-22 18:05:25,454 INFO L226 Difference]: Without dead ends: 3556 [2022-07-22 18:05:25,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-07-22 18:05:25,476 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 2558 mSDsluCounter, 1917 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2558 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:25,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2558 Valid, 2078 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:05:25,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2022-07-22 18:05:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 554. [2022-07-22 18:05:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 1.5207956600361663) internal successors, (841), 553 states have internal predecessors, (841), 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) [2022-07-22 18:05:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 841 transitions. [2022-07-22 18:05:25,639 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 841 transitions. Word has length 90 [2022-07-22 18:05:25,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:25,640 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 841 transitions. [2022-07-22 18:05:25,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 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) [2022-07-22 18:05:25,643 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 841 transitions. [2022-07-22 18:05:25,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:25,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:25,649 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] [2022-07-22 18:05:25,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:05:25,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:25,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1468897702, now seen corresponding path program 1 times [2022-07-22 18:05:25,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:25,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451458990] [2022-07-22 18:05:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:25,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:25,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:25,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451458990] [2022-07-22 18:05:25,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451458990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:25,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:25,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005454680] [2022-07-22 18:05:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:25,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:25,827 INFO L87 Difference]: Start difference. First operand 554 states and 841 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-22 18:05:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:25,961 INFO L93 Difference]: Finished difference Result 1506 states and 2335 transitions. [2022-07-22 18:05:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2022-07-22 18:05:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:25,966 INFO L225 Difference]: With dead ends: 1506 [2022-07-22 18:05:25,966 INFO L226 Difference]: Without dead ends: 1008 [2022-07-22 18:05:25,967 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 [2022-07-22 18:05:25,972 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 68 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:25,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 267 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-22 18:05:26,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 998. [2022-07-22 18:05:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.5255767301905716) internal successors, (1521), 997 states have internal predecessors, (1521), 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) [2022-07-22 18:05:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1521 transitions. [2022-07-22 18:05:26,065 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1521 transitions. Word has length 92 [2022-07-22 18:05:26,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:26,066 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1521 transitions. [2022-07-22 18:05:26,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-22 18:05:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1521 transitions. [2022-07-22 18:05:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:26,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:26,068 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] [2022-07-22 18:05:26,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:05:26,069 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:26,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1535391214, now seen corresponding path program 1 times [2022-07-22 18:05:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:26,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128312102] [2022-07-22 18:05:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:26,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:26,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:26,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128312102] [2022-07-22 18:05:26,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128312102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:26,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:26,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:05:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148342564] [2022-07-22 18:05:26,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:26,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:05:26,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:05:26,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:05:26,378 INFO L87 Difference]: Start difference. First operand 998 states and 1521 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 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) [2022-07-22 18:05:26,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:26,798 INFO L93 Difference]: Finished difference Result 1942 states and 2987 transitions. [2022-07-22 18:05:26,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:05:26,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 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 92 [2022-07-22 18:05:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:26,803 INFO L225 Difference]: With dead ends: 1942 [2022-07-22 18:05:26,803 INFO L226 Difference]: Without dead ends: 1000 [2022-07-22 18:05:26,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:05:26,808 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 624 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:26,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 831 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-07-22 18:05:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 998. [2022-07-22 18:05:27,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.5175526579739218) internal successors, (1513), 997 states have internal predecessors, (1513), 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) [2022-07-22 18:05:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1513 transitions. [2022-07-22 18:05:27,009 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1513 transitions. Word has length 92 [2022-07-22 18:05:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:27,010 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1513 transitions. [2022-07-22 18:05:27,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 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) [2022-07-22 18:05:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1513 transitions. [2022-07-22 18:05:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:27,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:27,011 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] [2022-07-22 18:05:27,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:05:27,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:27,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:27,012 INFO L85 PathProgramCache]: Analyzing trace with hash 550533322, now seen corresponding path program 1 times [2022-07-22 18:05:27,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:27,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24759047] [2022-07-22 18:05:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:27,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:27,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:27,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24759047] [2022-07-22 18:05:27,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24759047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:27,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:27,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:27,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633021008] [2022-07-22 18:05:27,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:27,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:27,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:27,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:27,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:27,072 INFO L87 Difference]: Start difference. First operand 998 states and 1513 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-22 18:05:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:27,274 INFO L93 Difference]: Finished difference Result 2786 states and 4267 transitions. [2022-07-22 18:05:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:27,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2022-07-22 18:05:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:27,302 INFO L225 Difference]: With dead ends: 2786 [2022-07-22 18:05:27,302 INFO L226 Difference]: Without dead ends: 1844 [2022-07-22 18:05:27,316 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 [2022-07-22 18:05:27,316 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 85 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 335 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 [2022-07-22 18:05:27,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 335 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:27,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-22 18:05:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-07-22 18:05:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.5171102661596958) internal successors, (2793), 1841 states have internal predecessors, (2793), 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) [2022-07-22 18:05:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2793 transitions. [2022-07-22 18:05:27,663 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2793 transitions. Word has length 92 [2022-07-22 18:05:27,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:27,664 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2793 transitions. [2022-07-22 18:05:27,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-22 18:05:27,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2793 transitions. [2022-07-22 18:05:27,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:27,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:27,666 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] [2022-07-22 18:05:27,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:05:27,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:27,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:27,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1925362326, now seen corresponding path program 1 times [2022-07-22 18:05:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:27,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585994886] [2022-07-22 18:05:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:27,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:27,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585994886] [2022-07-22 18:05:27,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585994886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:27,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:27,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:27,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708018136] [2022-07-22 18:05:27,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:27,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:27,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:27,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:27,791 INFO L87 Difference]: Start difference. First operand 1842 states and 2793 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-22 18:05:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:28,291 INFO L93 Difference]: Finished difference Result 5222 states and 7947 transitions. [2022-07-22 18:05:28,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:28,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2022-07-22 18:05:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:28,303 INFO L225 Difference]: With dead ends: 5222 [2022-07-22 18:05:28,309 INFO L226 Difference]: Without dead ends: 3436 [2022-07-22 18:05:28,314 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 [2022-07-22 18:05:28,320 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 89 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 344 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 [2022-07-22 18:05:28,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 344 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:28,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3436 states. [2022-07-22 18:05:28,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3436 to 3434. [2022-07-22 18:05:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3433 states have (on average 1.5080104864549957) internal successors, (5177), 3433 states have internal predecessors, (5177), 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) [2022-07-22 18:05:28,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 5177 transitions. [2022-07-22 18:05:28,879 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 5177 transitions. Word has length 92 [2022-07-22 18:05:28,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:28,882 INFO L495 AbstractCegarLoop]: Abstraction has 3434 states and 5177 transitions. [2022-07-22 18:05:28,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-22 18:05:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 5177 transitions. [2022-07-22 18:05:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:28,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:28,896 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] [2022-07-22 18:05:28,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:05:28,897 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:28,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:28,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1745956342, now seen corresponding path program 1 times [2022-07-22 18:05:28,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:28,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850359607] [2022-07-22 18:05:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:28,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:28,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:28,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850359607] [2022-07-22 18:05:28,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850359607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:28,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:28,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762591863] [2022-07-22 18:05:28,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:28,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:28,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:28,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:28,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:28,978 INFO L87 Difference]: Start difference. First operand 3434 states and 5177 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-22 18:05:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:29,716 INFO L93 Difference]: Finished difference Result 9806 states and 14779 transitions. [2022-07-22 18:05:29,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:29,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2022-07-22 18:05:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:29,738 INFO L225 Difference]: With dead ends: 9806 [2022-07-22 18:05:29,738 INFO L226 Difference]: Without dead ends: 6428 [2022-07-22 18:05:29,742 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 [2022-07-22 18:05:29,743 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 93 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 353 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 [2022-07-22 18:05:29,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 353 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:29,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6428 states. [2022-07-22 18:05:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6428 to 6426. [2022-07-22 18:05:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6426 states, 6425 states have (on average 1.4930739299610896) internal successors, (9593), 6425 states have internal predecessors, (9593), 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) [2022-07-22 18:05:30,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6426 states to 6426 states and 9593 transitions. [2022-07-22 18:05:30,742 INFO L78 Accepts]: Start accepts. Automaton has 6426 states and 9593 transitions. Word has length 92 [2022-07-22 18:05:30,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:30,742 INFO L495 AbstractCegarLoop]: Abstraction has 6426 states and 9593 transitions. [2022-07-22 18:05:30,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-22 18:05:30,743 INFO L276 IsEmpty]: Start isEmpty. Operand 6426 states and 9593 transitions. [2022-07-22 18:05:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 18:05:30,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:30,744 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] [2022-07-22 18:05:30,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:05:30,745 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash 789382826, now seen corresponding path program 1 times [2022-07-22 18:05:30,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:30,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14018193] [2022-07-22 18:05:30,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:30,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:30,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:30,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14018193] [2022-07-22 18:05:30,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14018193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:30,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:30,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:30,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560512023] [2022-07-22 18:05:30,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:30,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:30,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:30,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:30,851 INFO L87 Difference]: Start difference. First operand 6426 states and 9593 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-22 18:05:32,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:32,347 INFO L93 Difference]: Finished difference Result 18398 states and 27387 transitions. [2022-07-22 18:05:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:32,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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 92 [2022-07-22 18:05:32,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:32,428 INFO L225 Difference]: With dead ends: 18398 [2022-07-22 18:05:32,428 INFO L226 Difference]: Without dead ends: 12028 [2022-07-22 18:05:32,454 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 [2022-07-22 18:05:32,455 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 97 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:32,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 362 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12028 states. [2022-07-22 18:05:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12028 to 12026. [2022-07-22 18:05:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12026 states, 12025 states have (on average 1.4736798336798336) internal successors, (17721), 12025 states have internal predecessors, (17721), 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) [2022-07-22 18:05:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12026 states to 12026 states and 17721 transitions. [2022-07-22 18:05:34,246 INFO L78 Accepts]: Start accepts. Automaton has 12026 states and 17721 transitions. Word has length 92 [2022-07-22 18:05:34,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:34,246 INFO L495 AbstractCegarLoop]: Abstraction has 12026 states and 17721 transitions. [2022-07-22 18:05:34,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 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) [2022-07-22 18:05:34,247 INFO L276 IsEmpty]: Start isEmpty. Operand 12026 states and 17721 transitions. [2022-07-22 18:05:34,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 18:05:34,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:34,248 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] [2022-07-22 18:05:34,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:05:34,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:34,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash -62235482, now seen corresponding path program 1 times [2022-07-22 18:05:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:34,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255128468] [2022-07-22 18:05:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:34,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:34,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255128468] [2022-07-22 18:05:34,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255128468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:34,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:34,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:05:34,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351409725] [2022-07-22 18:05:34,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:34,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:05:34,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:34,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:05:34,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:05:34,416 INFO L87 Difference]: Start difference. First operand 12026 states and 17721 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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) [2022-07-22 18:05:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:36,365 INFO L93 Difference]: Finished difference Result 20896 states and 30633 transitions. [2022-07-22 18:05:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:05:36,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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 [2022-07-22 18:05:36,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:36,497 INFO L225 Difference]: With dead ends: 20896 [2022-07-22 18:05:36,498 INFO L226 Difference]: Without dead ends: 20894 [2022-07-22 18:05:36,508 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 [2022-07-22 18:05:36,524 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 303 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:36,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 725 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:05:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20894 states. [2022-07-22 18:05:38,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20894 to 12410. [2022-07-22 18:05:38,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12410 states, 12409 states have (on average 1.4538641308727536) internal successors, (18041), 12409 states have internal predecessors, (18041), 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) [2022-07-22 18:05:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12410 states to 12410 states and 18041 transitions. [2022-07-22 18:05:38,229 INFO L78 Accepts]: Start accepts. Automaton has 12410 states and 18041 transitions. Word has length 93 [2022-07-22 18:05:38,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:38,230 INFO L495 AbstractCegarLoop]: Abstraction has 12410 states and 18041 transitions. [2022-07-22 18:05:38,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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) [2022-07-22 18:05:38,230 INFO L276 IsEmpty]: Start isEmpty. Operand 12410 states and 18041 transitions. [2022-07-22 18:05:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-22 18:05:38,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:38,231 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] [2022-07-22 18:05:38,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:05:38,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:38,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:38,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1252770917, now seen corresponding path program 1 times [2022-07-22 18:05:38,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:38,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191320759] [2022-07-22 18:05:38,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:38,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:05:38,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:38,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191320759] [2022-07-22 18:05:38,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191320759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:38,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:38,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:05:38,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478418556] [2022-07-22 18:05:38,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:38,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:05:38,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:38,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:05:38,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:05:38,277 INFO L87 Difference]: Start difference. First operand 12410 states and 18041 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2022-07-22 18:05:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:39,574 INFO L93 Difference]: Finished difference Result 24961 states and 36479 transitions. [2022-07-22 18:05:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:05:39,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2022-07-22 18:05:39,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:39,669 INFO L225 Difference]: With dead ends: 24961 [2022-07-22 18:05:39,683 INFO L226 Difference]: Without dead ends: 18174 [2022-07-22 18:05:39,723 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 [2022-07-22 18:05:39,725 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 98 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 366 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 [2022-07-22 18:05:39,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 366 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:05:39,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18174 states. [2022-07-22 18:05:42,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18174 to 18172. [2022-07-22 18:05:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18172 states, 18171 states have (on average 1.4473061471575588) internal successors, (26299), 18171 states have internal predecessors, (26299), 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) [2022-07-22 18:05:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18172 states to 18172 states and 26299 transitions. [2022-07-22 18:05:42,767 INFO L78 Accepts]: Start accepts. Automaton has 18172 states and 26299 transitions. Word has length 94 [2022-07-22 18:05:42,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:42,769 INFO L495 AbstractCegarLoop]: Abstraction has 18172 states and 26299 transitions. [2022-07-22 18:05:42,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2022-07-22 18:05:42,770 INFO L276 IsEmpty]: Start isEmpty. Operand 18172 states and 26299 transitions. [2022-07-22 18:05:42,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 18:05:42,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:42,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:05:42,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:05:42,781 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:42,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:42,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1608497720, now seen corresponding path program 1 times [2022-07-22 18:05:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:42,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464783161] [2022-07-22 18:05:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:42,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 18:05:42,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:42,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464783161] [2022-07-22 18:05:42,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464783161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:42,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:42,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:05:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037869511] [2022-07-22 18:05:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:05:42,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:05:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:05:42,980 INFO L87 Difference]: Start difference. First operand 18172 states and 26299 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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) [2022-07-22 18:05:54,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:05:54,105 INFO L93 Difference]: Finished difference Result 148492 states and 214915 transitions. [2022-07-22 18:05:54,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:05:54,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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 129 [2022-07-22 18:05:54,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:05:54,514 INFO L225 Difference]: With dead ends: 148492 [2022-07-22 18:05:54,514 INFO L226 Difference]: Without dead ends: 130378 [2022-07-22 18:05:54,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:05:54,615 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 2254 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:05:54,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 1241 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:05:54,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130378 states. [2022-07-22 18:05:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130378 to 36284. [2022-07-22 18:05:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36284 states, 36283 states have (on average 1.4427417798969213) internal successors, (52347), 36283 states have internal predecessors, (52347), 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) [2022-07-22 18:05:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36284 states to 36284 states and 52347 transitions. [2022-07-22 18:05:58,269 INFO L78 Accepts]: Start accepts. Automaton has 36284 states and 52347 transitions. Word has length 129 [2022-07-22 18:05:58,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:05:58,270 INFO L495 AbstractCegarLoop]: Abstraction has 36284 states and 52347 transitions. [2022-07-22 18:05:58,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 9 states have internal predecessors, (107), 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) [2022-07-22 18:05:58,271 INFO L276 IsEmpty]: Start isEmpty. Operand 36284 states and 52347 transitions. [2022-07-22 18:05:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 18:05:58,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:05:58,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:05:58,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:05:58,289 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:05:58,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:05:58,290 INFO L85 PathProgramCache]: Analyzing trace with hash 917686760, now seen corresponding path program 1 times [2022-07-22 18:05:58,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:05:58,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608675486] [2022-07-22 18:05:58,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:05:58,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:05:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:05:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 18:05:58,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:05:58,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608675486] [2022-07-22 18:05:58,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608675486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:05:58,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:05:58,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:05:58,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696922946] [2022-07-22 18:05:58,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:05:58,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:05:58,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:05:58,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:05:58,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:05:58,396 INFO L87 Difference]: Start difference. First operand 36284 states and 52347 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 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) [2022-07-22 18:06:07,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:06:07,750 INFO L93 Difference]: Finished difference Result 166604 states and 240963 transitions. [2022-07-22 18:06:07,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:06:07,750 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 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 129 [2022-07-22 18:06:07,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:06:07,986 INFO L225 Difference]: With dead ends: 166604 [2022-07-22 18:06:07,986 INFO L226 Difference]: Without dead ends: 148490 [2022-07-22 18:06:08,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:06:08,034 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1983 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:06:08,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 1344 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:06:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148490 states. [2022-07-22 18:06:13,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148490 to 63484. [2022-07-22 18:06:13,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63484 states, 63483 states have (on average 1.4375344580438858) internal successors, (91259), 63483 states have internal predecessors, (91259), 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) [2022-07-22 18:06:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63484 states to 63484 states and 91259 transitions. [2022-07-22 18:06:13,570 INFO L78 Accepts]: Start accepts. Automaton has 63484 states and 91259 transitions. Word has length 129 [2022-07-22 18:06:13,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:06:13,572 INFO L495 AbstractCegarLoop]: Abstraction has 63484 states and 91259 transitions. [2022-07-22 18:06:13,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 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) [2022-07-22 18:06:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 63484 states and 91259 transitions. [2022-07-22 18:06:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 18:06:13,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:06:13,588 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:06:13,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:06:13,588 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:06:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:06:13,589 INFO L85 PathProgramCache]: Analyzing trace with hash 853581330, now seen corresponding path program 1 times [2022-07-22 18:06:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:06:13,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539151800] [2022-07-22 18:06:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:06:13,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:06:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:06:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 18:06:13,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:06:13,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539151800] [2022-07-22 18:06:13,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539151800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:06:13,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:06:13,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 18:06:13,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490746834] [2022-07-22 18:06:13,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:06:13,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:06:13,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:06:13,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:06:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:06:13,690 INFO L87 Difference]: Start difference. First operand 63484 states and 91259 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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) [2022-07-22 18:06:24,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:06:24,789 INFO L93 Difference]: Finished difference Result 184716 states and 267011 transitions. [2022-07-22 18:06:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:06:24,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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 129 [2022-07-22 18:06:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:06:25,078 INFO L225 Difference]: With dead ends: 184716 [2022-07-22 18:06:25,078 INFO L226 Difference]: Without dead ends: 166602 [2022-07-22 18:06:25,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:06:25,120 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1887 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:06:25,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1887 Valid, 1400 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:06:25,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166602 states.