./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/locks/test_locks_15-2.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 ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 22:32:33,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 22:32:33,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 22:32:33,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 22:32:33,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 22:32:33,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 22:32:33,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 22:32:33,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 22:32:33,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 22:32:33,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 22:32:33,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 22:32:33,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 22:32:33,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 22:32:33,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 22:32:33,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 22:32:33,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 22:32:33,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 22:32:33,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 22:32:33,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 22:32:33,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 22:32:33,364 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 22:32:33,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 22:32:33,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 22:32:33,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 22:32:33,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 22:32:33,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 22:32:33,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 22:32:33,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 22:32:33,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 22:32:33,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 22:32:33,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 22:32:33,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 22:32:33,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 22:32:33,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 22:32:33,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 22:32:33,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 22:32:33,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 22:32:33,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 22:32:33,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 22:32:33,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 22:32:33,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 22:32:33,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 22:32:33,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 22:32:33,431 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 22:32:33,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 22:32:33,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 22:32:33,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 22:32:33,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 22:32:33,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 22:32:33,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 22:32:33,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 22:32:33,434 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 22:32:33,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 22:32:33,435 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 22:32:33,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 22:32:33,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 22:32:33,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 22:32:33,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 22:32:33,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 22:32:33,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 22:32:33,437 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 22:32:33,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 22:32:33,437 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 22:32:33,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 22:32:33,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 22:32:33,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 22:32:33,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 22:32:33,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:32:33,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 22:32:33,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 22:32:33,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 22:32:33,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 22:32:33,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 22:32:33,439 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 22:32:33,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 22:32:33,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 22:32:33,440 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 [2022-07-20 22:32:33,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 22:32:33,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 22:32:33,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 22:32:33,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 22:32:33,815 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 22:32:33,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_15-2.c [2022-07-20 22:32:33,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06510c232/e3ebfc4c02164347908cd5d69dbdf6e8/FLAGde5db9083 [2022-07-20 22:32:34,343 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 22:32:34,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_15-2.c [2022-07-20 22:32:34,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06510c232/e3ebfc4c02164347908cd5d69dbdf6e8/FLAGde5db9083 [2022-07-20 22:32:34,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06510c232/e3ebfc4c02164347908cd5d69dbdf6e8 [2022-07-20 22:32:34,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 22:32:34,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 22:32:34,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 22:32:34,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 22:32:34,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 22:32:34,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d866800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34, skipping insertion in model container [2022-07-20 22:32:34,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 22:32:34,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:32:34,616 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/locks/test_locks_15-2.c[5628,5641] [2022-07-20 22:32:34,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:32:34,638 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 22:32:34,698 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/locks/test_locks_15-2.c[5628,5641] [2022-07-20 22:32:34,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:32:34,717 INFO L208 MainTranslator]: Completed translation [2022-07-20 22:32:34,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34 WrapperNode [2022-07-20 22:32:34,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 22:32:34,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 22:32:34,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 22:32:34,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 22:32:34,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,751 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 193 [2022-07-20 22:32:34,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 22:32:34,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 22:32:34,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 22:32:34,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 22:32:34,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 22:32:34,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 22:32:34,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 22:32:34,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 22:32:34,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (1/1) ... [2022-07-20 22:32:34,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:32:34,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:32:34,805 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) [2022-07-20 22:32:34,831 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 [2022-07-20 22:32:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 22:32:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 22:32:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 22:32:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 22:32:34,937 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 22:32:34,938 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 22:32:35,167 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 22:32:35,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 22:32:35,174 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 22:32:35,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:32:35 BoogieIcfgContainer [2022-07-20 22:32:35,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 22:32:35,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 22:32:35,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 22:32:35,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 22:32:35,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:32:34" (1/3) ... [2022-07-20 22:32:35,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde364e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:32:35, skipping insertion in model container [2022-07-20 22:32:35,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:32:34" (2/3) ... [2022-07-20 22:32:35,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde364e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:32:35, skipping insertion in model container [2022-07-20 22:32:35,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:32:35" (3/3) ... [2022-07-20 22:32:35,191 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.c [2022-07-20 22:32:35,203 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 22:32:35,203 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 22:32:35,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 22:32:35,269 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@2992181a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@592fdf94 [2022-07-20 22:32:35,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 22:32:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 54 states have internal predecessors, (102), 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) [2022-07-20 22:32:35,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-20 22:32:35,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:35,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:35,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:35,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1188560455, now seen corresponding path program 1 times [2022-07-20 22:32:35,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:35,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272493721] [2022-07-20 22:32:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:35,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:35,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:35,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272493721] [2022-07-20 22:32:35,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272493721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:35,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:35,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:35,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203161010] [2022-07-20 22:32:35,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:35,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:35,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:35,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:35,543 INFO L87 Difference]: Start difference. First operand has 55 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 54 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-07-20 22:32:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:35,582 INFO L93 Difference]: Finished difference Result 113 states and 205 transitions. [2022-07-20 22:32:35,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:35,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2022-07-20 22:32:35,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:35,593 INFO L225 Difference]: With dead ends: 113 [2022-07-20 22:32:35,594 INFO L226 Difference]: Without dead ends: 99 [2022-07-20 22:32:35,596 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 [2022-07-20 22:32:35,599 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 77 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:35,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 199 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:35,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-20 22:32:35,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 67. [2022-07-20 22:32:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.9090909090909092) internal successors, (126), 66 states have internal predecessors, (126), 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) [2022-07-20 22:32:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 126 transitions. [2022-07-20 22:32:35,640 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 126 transitions. Word has length 22 [2022-07-20 22:32:35,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:35,641 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 126 transitions. [2022-07-20 22:32:35,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-07-20 22:32:35,642 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 126 transitions. [2022-07-20 22:32:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-20 22:32:35,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:35,643 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] [2022-07-20 22:32:35,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 22:32:35,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:35,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1112262135, now seen corresponding path program 1 times [2022-07-20 22:32:35,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:35,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206134000] [2022-07-20 22:32:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:35,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:35,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:35,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206134000] [2022-07-20 22:32:35,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206134000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:35,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:35,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:35,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144658813] [2022-07-20 22:32:35,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:35,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:35,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:35,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:35,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:35,698 INFO L87 Difference]: Start difference. First operand 67 states and 126 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-07-20 22:32:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:35,728 INFO L93 Difference]: Finished difference Result 164 states and 309 transitions. [2022-07-20 22:32:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:35,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2022-07-20 22:32:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:35,732 INFO L225 Difference]: With dead ends: 164 [2022-07-20 22:32:35,732 INFO L226 Difference]: Without dead ends: 99 [2022-07-20 22:32:35,733 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 [2022-07-20 22:32:35,734 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 73 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:35,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 213 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:35,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-20 22:32:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2022-07-20 22:32:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.8958333333333333) internal successors, (182), 96 states have internal predecessors, (182), 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) [2022-07-20 22:32:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 182 transitions. [2022-07-20 22:32:35,757 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 182 transitions. Word has length 22 [2022-07-20 22:32:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:35,758 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 182 transitions. [2022-07-20 22:32:35,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-07-20 22:32:35,758 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 182 transitions. [2022-07-20 22:32:35,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-20 22:32:35,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:35,761 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] [2022-07-20 22:32:35,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 22:32:35,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:35,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:35,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1809543287, now seen corresponding path program 1 times [2022-07-20 22:32:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:35,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174726100] [2022-07-20 22:32:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:35,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:35,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:35,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174726100] [2022-07-20 22:32:35,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174726100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:35,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:35,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:35,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103330563] [2022-07-20 22:32:35,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:35,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:35,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:35,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:35,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:35,855 INFO L87 Difference]: Start difference. First operand 97 states and 182 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-07-20 22:32:35,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:35,889 INFO L93 Difference]: Finished difference Result 150 states and 276 transitions. [2022-07-20 22:32:35,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:35,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-07-20 22:32:35,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:35,891 INFO L225 Difference]: With dead ends: 150 [2022-07-20 22:32:35,893 INFO L226 Difference]: Without dead ends: 102 [2022-07-20 22:32:35,894 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 [2022-07-20 22:32:35,895 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 75 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:35,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 240 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-20 22:32:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2022-07-20 22:32:35,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.8585858585858586) internal successors, (184), 99 states have internal predecessors, (184), 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) [2022-07-20 22:32:35,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 184 transitions. [2022-07-20 22:32:35,911 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 184 transitions. Word has length 23 [2022-07-20 22:32:35,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:35,912 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 184 transitions. [2022-07-20 22:32:35,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-07-20 22:32:35,913 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 184 transitions. [2022-07-20 22:32:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-20 22:32:35,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:35,914 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] [2022-07-20 22:32:35,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 22:32:35,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:35,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:35,917 INFO L85 PathProgramCache]: Analyzing trace with hash 120599545, now seen corresponding path program 1 times [2022-07-20 22:32:35,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:35,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692025452] [2022-07-20 22:32:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:35,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:35,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:35,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:35,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692025452] [2022-07-20 22:32:35,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692025452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:35,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:35,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:35,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630426581] [2022-07-20 22:32:35,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:35,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:35,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:35,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:35,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:35,961 INFO L87 Difference]: Start difference. First operand 100 states and 184 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-07-20 22:32:35,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:35,973 INFO L93 Difference]: Finished difference Result 193 states and 357 transitions. [2022-07-20 22:32:35,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:35,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-07-20 22:32:35,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:35,975 INFO L225 Difference]: With dead ends: 193 [2022-07-20 22:32:35,975 INFO L226 Difference]: Without dead ends: 191 [2022-07-20 22:32:35,976 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 [2022-07-20 22:32:35,977 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 70 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:35,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 185 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-20 22:32:35,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 133. [2022-07-20 22:32:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.856060606060606) internal successors, (245), 132 states have internal predecessors, (245), 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) [2022-07-20 22:32:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 245 transitions. [2022-07-20 22:32:35,987 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 245 transitions. Word has length 23 [2022-07-20 22:32:35,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:35,988 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 245 transitions. [2022-07-20 22:32:35,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-07-20 22:32:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 245 transitions. [2022-07-20 22:32:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-20 22:32:35,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:35,989 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] [2022-07-20 22:32:35,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 22:32:35,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:35,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1873545161, now seen corresponding path program 1 times [2022-07-20 22:32:35,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:35,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276548618] [2022-07-20 22:32:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:35,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276548618] [2022-07-20 22:32:36,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276548618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28701205] [2022-07-20 22:32:36,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,028 INFO L87 Difference]: Start difference. First operand 133 states and 245 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-07-20 22:32:36,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,041 INFO L93 Difference]: Finished difference Result 321 states and 595 transitions. [2022-07-20 22:32:36,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2022-07-20 22:32:36,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,043 INFO L225 Difference]: With dead ends: 321 [2022-07-20 22:32:36,043 INFO L226 Difference]: Without dead ends: 193 [2022-07-20 22:32:36,044 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 [2022-07-20 22:32:36,045 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 72 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:36,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 214 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-20 22:32:36,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2022-07-20 22:32:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.8473684210526315) internal successors, (351), 190 states have internal predecessors, (351), 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) [2022-07-20 22:32:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 351 transitions. [2022-07-20 22:32:36,056 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 351 transitions. Word has length 23 [2022-07-20 22:32:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:36,056 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 351 transitions. [2022-07-20 22:32:36,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-07-20 22:32:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 351 transitions. [2022-07-20 22:32:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-20 22:32:36,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:36,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:36,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 22:32:36,058 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:36,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:36,059 INFO L85 PathProgramCache]: Analyzing trace with hash -556169332, now seen corresponding path program 1 times [2022-07-20 22:32:36,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:36,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201642621] [2022-07-20 22:32:36,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:36,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201642621] [2022-07-20 22:32:36,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201642621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039946845] [2022-07-20 22:32:36,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,091 INFO L87 Difference]: Start difference. First operand 191 states and 351 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,113 INFO L93 Difference]: Finished difference Result 288 states and 526 transitions. [2022-07-20 22:32:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-20 22:32:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,115 INFO L225 Difference]: With dead ends: 288 [2022-07-20 22:32:36,115 INFO L226 Difference]: Without dead ends: 195 [2022-07-20 22:32:36,116 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 [2022-07-20 22:32:36,119 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 74 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:36,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 236 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-20 22:32:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2022-07-20 22:32:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.828125) internal successors, (351), 192 states have internal predecessors, (351), 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) [2022-07-20 22:32:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 351 transitions. [2022-07-20 22:32:36,141 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 351 transitions. Word has length 24 [2022-07-20 22:32:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:36,142 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 351 transitions. [2022-07-20 22:32:36,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,142 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 351 transitions. [2022-07-20 22:32:36,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-20 22:32:36,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:36,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:36,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 22:32:36,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2049854222, now seen corresponding path program 1 times [2022-07-20 22:32:36,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:36,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430074662] [2022-07-20 22:32:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:36,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430074662] [2022-07-20 22:32:36,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430074662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605999110] [2022-07-20 22:32:36,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,206 INFO L87 Difference]: Start difference. First operand 193 states and 351 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,228 INFO L93 Difference]: Finished difference Result 561 states and 1025 transitions. [2022-07-20 22:32:36,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-20 22:32:36,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,232 INFO L225 Difference]: With dead ends: 561 [2022-07-20 22:32:36,232 INFO L226 Difference]: Without dead ends: 375 [2022-07-20 22:32:36,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,239 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 72 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:36,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:36,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-07-20 22:32:36,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2022-07-20 22:32:36,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.814516129032258) internal successors, (675), 372 states have internal predecessors, (675), 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) [2022-07-20 22:32:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 675 transitions. [2022-07-20 22:32:36,264 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 675 transitions. Word has length 24 [2022-07-20 22:32:36,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:36,265 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 675 transitions. [2022-07-20 22:32:36,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,265 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 675 transitions. [2022-07-20 22:32:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-20 22:32:36,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:36,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:36,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 22:32:36,271 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:36,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash -250968368, now seen corresponding path program 1 times [2022-07-20 22:32:36,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:36,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626784773] [2022-07-20 22:32:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:36,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626784773] [2022-07-20 22:32:36,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626784773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770169254] [2022-07-20 22:32:36,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,327 INFO L87 Difference]: Start difference. First operand 373 states and 675 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,348 INFO L93 Difference]: Finished difference Result 481 states and 877 transitions. [2022-07-20 22:32:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-20 22:32:36,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,351 INFO L225 Difference]: With dead ends: 481 [2022-07-20 22:32:36,351 INFO L226 Difference]: Without dead ends: 479 [2022-07-20 22:32:36,351 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 [2022-07-20 22:32:36,355 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 67 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:36,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 260 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:36,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-07-20 22:32:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 373. [2022-07-20 22:32:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.803763440860215) internal successors, (671), 372 states have internal predecessors, (671), 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) [2022-07-20 22:32:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 671 transitions. [2022-07-20 22:32:36,383 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 671 transitions. Word has length 24 [2022-07-20 22:32:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:36,383 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 671 transitions. [2022-07-20 22:32:36,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,384 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 671 transitions. [2022-07-20 22:32:36,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-20 22:32:36,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:36,386 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] [2022-07-20 22:32:36,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 22:32:36,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash -878816148, now seen corresponding path program 1 times [2022-07-20 22:32:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:36,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114444361] [2022-07-20 22:32:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:36,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114444361] [2022-07-20 22:32:36,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114444361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955527515] [2022-07-20 22:32:36,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,438 INFO L87 Difference]: Start difference. First operand 373 states and 671 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-07-20 22:32:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,455 INFO L93 Difference]: Finished difference Result 709 states and 1289 transitions. [2022-07-20 22:32:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2022-07-20 22:32:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,459 INFO L225 Difference]: With dead ends: 709 [2022-07-20 22:32:36,459 INFO L226 Difference]: Without dead ends: 707 [2022-07-20 22:32:36,460 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 [2022-07-20 22:32:36,461 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 64 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:36,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 181 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-07-20 22:32:36,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 513. [2022-07-20 22:32:36,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.779296875) internal successors, (911), 512 states have internal predecessors, (911), 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) [2022-07-20 22:32:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 911 transitions. [2022-07-20 22:32:36,476 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 911 transitions. Word has length 25 [2022-07-20 22:32:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:36,480 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 911 transitions. [2022-07-20 22:32:36,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-07-20 22:32:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 911 transitions. [2022-07-20 22:32:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-20 22:32:36,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:36,482 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] [2022-07-20 22:32:36,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 22:32:36,482 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:36,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1422006442, now seen corresponding path program 1 times [2022-07-20 22:32:36,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:36,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773462831] [2022-07-20 22:32:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:36,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773462831] [2022-07-20 22:32:36,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773462831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131267508] [2022-07-20 22:32:36,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,533 INFO L87 Difference]: Start difference. First operand 513 states and 911 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-07-20 22:32:36,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,550 INFO L93 Difference]: Finished difference Result 1237 states and 2209 transitions. [2022-07-20 22:32:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2022-07-20 22:32:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,553 INFO L225 Difference]: With dead ends: 1237 [2022-07-20 22:32:36,553 INFO L226 Difference]: Without dead ends: 731 [2022-07-20 22:32:36,554 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 [2022-07-20 22:32:36,555 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 70 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:36,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 216 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:36,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-07-20 22:32:36,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2022-07-20 22:32:36,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.7733516483516483) internal successors, (1291), 728 states have internal predecessors, (1291), 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) [2022-07-20 22:32:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1291 transitions. [2022-07-20 22:32:36,570 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1291 transitions. Word has length 25 [2022-07-20 22:32:36,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:36,570 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1291 transitions. [2022-07-20 22:32:36,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2022-07-20 22:32:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1291 transitions. [2022-07-20 22:32:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-20 22:32:36,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:36,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:36,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 22:32:36,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:36,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1473284061, now seen corresponding path program 1 times [2022-07-20 22:32:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:36,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998263608] [2022-07-20 22:32:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998263608] [2022-07-20 22:32:36,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998263608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827422714] [2022-07-20 22:32:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,601 INFO L87 Difference]: Start difference. First operand 729 states and 1291 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,615 INFO L93 Difference]: Finished difference Result 1101 states and 1945 transitions. [2022-07-20 22:32:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-20 22:32:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,618 INFO L225 Difference]: With dead ends: 1101 [2022-07-20 22:32:36,618 INFO L226 Difference]: Without dead ends: 743 [2022-07-20 22:32:36,619 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 [2022-07-20 22:32:36,620 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 72 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:36,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 228 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:36,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-07-20 22:32:36,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 741. [2022-07-20 22:32:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.7554054054054054) internal successors, (1299), 740 states have internal predecessors, (1299), 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) [2022-07-20 22:32:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1299 transitions. [2022-07-20 22:32:36,634 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1299 transitions. Word has length 26 [2022-07-20 22:32:36,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:36,635 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1299 transitions. [2022-07-20 22:32:36,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1299 transitions. [2022-07-20 22:32:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-20 22:32:36,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:36,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:36,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 22:32:36,637 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:36,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:36,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1132739493, now seen corresponding path program 1 times [2022-07-20 22:32:36,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:36,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455099641] [2022-07-20 22:32:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:36,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455099641] [2022-07-20 22:32:36,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455099641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332804739] [2022-07-20 22:32:36,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,659 INFO L87 Difference]: Start difference. First operand 741 states and 1299 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,676 INFO L93 Difference]: Finished difference Result 1385 states and 2461 transitions. [2022-07-20 22:32:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-20 22:32:36,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,681 INFO L225 Difference]: With dead ends: 1385 [2022-07-20 22:32:36,681 INFO L226 Difference]: Without dead ends: 1383 [2022-07-20 22:32:36,682 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 [2022-07-20 22:32:36,683 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 61 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:36,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 179 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:36,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-07-20 22:32:36,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1029. [2022-07-20 22:32:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.722762645914397) internal successors, (1771), 1028 states have internal predecessors, (1771), 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) [2022-07-20 22:32:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1771 transitions. [2022-07-20 22:32:36,706 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1771 transitions. Word has length 26 [2022-07-20 22:32:36,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:36,706 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1771 transitions. [2022-07-20 22:32:36,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1771 transitions. [2022-07-20 22:32:36,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-20 22:32:36,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:36,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:32:36,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 22:32:36,708 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:36,709 INFO L85 PathProgramCache]: Analyzing trace with hash -861405213, now seen corresponding path program 1 times [2022-07-20 22:32:36,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:36,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733369626] [2022-07-20 22:32:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:36,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733369626] [2022-07-20 22:32:36,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733369626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011894621] [2022-07-20 22:32:36,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,739 INFO L87 Difference]: Start difference. First operand 1029 states and 1771 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,762 INFO L93 Difference]: Finished difference Result 2457 states and 4253 transitions. [2022-07-20 22:32:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-20 22:32:36,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,767 INFO L225 Difference]: With dead ends: 2457 [2022-07-20 22:32:36,768 INFO L226 Difference]: Without dead ends: 1447 [2022-07-20 22:32:36,769 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 [2022-07-20 22:32:36,770 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 69 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:36,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 217 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2022-07-20 22:32:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1445. [2022-07-20 22:32:36,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.7195290858725762) internal successors, (2483), 1444 states have internal predecessors, (2483), 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) [2022-07-20 22:32:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2483 transitions. [2022-07-20 22:32:36,801 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2483 transitions. Word has length 26 [2022-07-20 22:32:36,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:36,801 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2483 transitions. [2022-07-20 22:32:36,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:32:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2483 transitions. [2022-07-20 22:32:36,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-20 22:32:36,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:36,803 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] [2022-07-20 22:32:36,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 22:32:36,804 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:36,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash 755399007, now seen corresponding path program 1 times [2022-07-20 22:32:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:36,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532728976] [2022-07-20 22:32:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532728976] [2022-07-20 22:32:36,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532728976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171547623] [2022-07-20 22:32:36,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,827 INFO L87 Difference]: Start difference. First operand 1445 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-07-20 22:32:36,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,867 INFO L93 Difference]: Finished difference Result 2169 states and 3717 transitions. [2022-07-20 22:32:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2022-07-20 22:32:36,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,873 INFO L225 Difference]: With dead ends: 2169 [2022-07-20 22:32:36,874 INFO L226 Difference]: Without dead ends: 1463 [2022-07-20 22:32:36,875 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 [2022-07-20 22:32:36,875 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 71 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:36,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:36,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-07-20 22:32:36,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1461. [2022-07-20 22:32:36,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 1.7006849315068493) internal successors, (2483), 1460 states have internal predecessors, (2483), 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) [2022-07-20 22:32:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 2483 transitions. [2022-07-20 22:32:36,919 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 2483 transitions. Word has length 27 [2022-07-20 22:32:36,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:36,920 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 2483 transitions. [2022-07-20 22:32:36,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-07-20 22:32:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 2483 transitions. [2022-07-20 22:32:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-20 22:32:36,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:36,922 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] [2022-07-20 22:32:36,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 22:32:36,922 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:36,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:36,923 INFO L85 PathProgramCache]: Analyzing trace with hash -933544735, now seen corresponding path program 1 times [2022-07-20 22:32:36,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:36,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567458898] [2022-07-20 22:32:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:36,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:36,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:36,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567458898] [2022-07-20 22:32:36,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567458898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:36,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:36,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:36,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465204513] [2022-07-20 22:32:36,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:36,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:36,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:36,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:36,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:36,957 INFO L87 Difference]: Start difference. First operand 1461 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-07-20 22:32:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:36,987 INFO L93 Difference]: Finished difference Result 2697 states and 4661 transitions. [2022-07-20 22:32:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:36,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2022-07-20 22:32:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:36,997 INFO L225 Difference]: With dead ends: 2697 [2022-07-20 22:32:36,997 INFO L226 Difference]: Without dead ends: 2695 [2022-07-20 22:32:37,001 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 [2022-07-20 22:32:37,002 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 58 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:37,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 177 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:37,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2022-07-20 22:32:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2053. [2022-07-20 22:32:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2052 states have (on average 1.662280701754386) internal successors, (3411), 2052 states have internal predecessors, (3411), 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) [2022-07-20 22:32:37,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 3411 transitions. [2022-07-20 22:32:37,067 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 3411 transitions. Word has length 27 [2022-07-20 22:32:37,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:37,067 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 3411 transitions. [2022-07-20 22:32:37,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-07-20 22:32:37,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 3411 transitions. [2022-07-20 22:32:37,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-20 22:32:37,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:37,070 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] [2022-07-20 22:32:37,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 22:32:37,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1367277855, now seen corresponding path program 1 times [2022-07-20 22:32:37,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:37,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324177790] [2022-07-20 22:32:37,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:37,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:37,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:37,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324177790] [2022-07-20 22:32:37,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324177790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:37,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:37,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:37,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410932760] [2022-07-20 22:32:37,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:37,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:37,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:37,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:37,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:37,100 INFO L87 Difference]: Start difference. First operand 2053 states and 3411 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-07-20 22:32:37,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:37,140 INFO L93 Difference]: Finished difference Result 4873 states and 8149 transitions. [2022-07-20 22:32:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:37,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2022-07-20 22:32:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:37,152 INFO L225 Difference]: With dead ends: 4873 [2022-07-20 22:32:37,152 INFO L226 Difference]: Without dead ends: 2855 [2022-07-20 22:32:37,155 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 [2022-07-20 22:32:37,156 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:37,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 218 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2022-07-20 22:32:37,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2853. [2022-07-20 22:32:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2852 states have (on average 1.66164095371669) internal successors, (4739), 2852 states have internal predecessors, (4739), 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) [2022-07-20 22:32:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4739 transitions. [2022-07-20 22:32:37,245 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4739 transitions. Word has length 27 [2022-07-20 22:32:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:37,246 INFO L495 AbstractCegarLoop]: Abstraction has 2853 states and 4739 transitions. [2022-07-20 22:32:37,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-07-20 22:32:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4739 transitions. [2022-07-20 22:32:37,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-20 22:32:37,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:37,249 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] [2022-07-20 22:32:37,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 22:32:37,249 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:37,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:37,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1125097720, now seen corresponding path program 1 times [2022-07-20 22:32:37,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:37,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525139293] [2022-07-20 22:32:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:37,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:37,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525139293] [2022-07-20 22:32:37,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525139293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:37,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:37,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:37,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983505560] [2022-07-20 22:32:37,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:37,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:37,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:37,268 INFO L87 Difference]: Start difference. First operand 2853 states and 4739 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-20 22:32:37,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:37,302 INFO L93 Difference]: Finished difference Result 4281 states and 7093 transitions. [2022-07-20 22:32:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:37,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2022-07-20 22:32:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:37,313 INFO L225 Difference]: With dead ends: 4281 [2022-07-20 22:32:37,313 INFO L226 Difference]: Without dead ends: 2887 [2022-07-20 22:32:37,315 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 [2022-07-20 22:32:37,316 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 70 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:37,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 220 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:37,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-07-20 22:32:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2885. [2022-07-20 22:32:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2885 states, 2884 states have (on average 1.6432038834951457) internal successors, (4739), 2884 states have internal predecessors, (4739), 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) [2022-07-20 22:32:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 4739 transitions. [2022-07-20 22:32:37,391 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 4739 transitions. Word has length 28 [2022-07-20 22:32:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:37,391 INFO L495 AbstractCegarLoop]: Abstraction has 2885 states and 4739 transitions. [2022-07-20 22:32:37,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-20 22:32:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 4739 transitions. [2022-07-20 22:32:37,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-20 22:32:37,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:37,394 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] [2022-07-20 22:32:37,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 22:32:37,394 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:37,394 INFO L85 PathProgramCache]: Analyzing trace with hash -563846022, now seen corresponding path program 1 times [2022-07-20 22:32:37,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:37,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690212380] [2022-07-20 22:32:37,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:37,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:37,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690212380] [2022-07-20 22:32:37,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690212380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:37,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:37,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:37,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515225442] [2022-07-20 22:32:37,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:37,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:37,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:37,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:37,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:37,412 INFO L87 Difference]: Start difference. First operand 2885 states and 4739 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-20 22:32:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:37,459 INFO L93 Difference]: Finished difference Result 5257 states and 8805 transitions. [2022-07-20 22:32:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:37,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2022-07-20 22:32:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:37,480 INFO L225 Difference]: With dead ends: 5257 [2022-07-20 22:32:37,480 INFO L226 Difference]: Without dead ends: 5255 [2022-07-20 22:32:37,483 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 [2022-07-20 22:32:37,483 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 55 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:37,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 175 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2022-07-20 22:32:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 4101. [2022-07-20 22:32:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4100 states have (on average 1.6007317073170733) internal successors, (6563), 4100 states have internal predecessors, (6563), 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) [2022-07-20 22:32:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6563 transitions. [2022-07-20 22:32:37,592 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6563 transitions. Word has length 28 [2022-07-20 22:32:37,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:37,593 INFO L495 AbstractCegarLoop]: Abstraction has 4101 states and 6563 transitions. [2022-07-20 22:32:37,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-20 22:32:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6563 transitions. [2022-07-20 22:32:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-20 22:32:37,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:37,598 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] [2022-07-20 22:32:37,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 22:32:37,598 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:37,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:37,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1736976568, now seen corresponding path program 1 times [2022-07-20 22:32:37,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:37,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064315588] [2022-07-20 22:32:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:37,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:37,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:37,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064315588] [2022-07-20 22:32:37,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064315588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:37,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:37,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:37,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930676772] [2022-07-20 22:32:37,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:37,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:37,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:37,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:37,638 INFO L87 Difference]: Start difference. First operand 4101 states and 6563 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-20 22:32:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:37,719 INFO L93 Difference]: Finished difference Result 9673 states and 15589 transitions. [2022-07-20 22:32:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:37,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2022-07-20 22:32:37,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:37,745 INFO L225 Difference]: With dead ends: 9673 [2022-07-20 22:32:37,746 INFO L226 Difference]: Without dead ends: 5639 [2022-07-20 22:32:37,752 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 [2022-07-20 22:32:37,753 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:37,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2022-07-20 22:32:37,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5637. [2022-07-20 22:32:37,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5637 states, 5636 states have (on average 1.60166784953868) internal successors, (9027), 5636 states have internal predecessors, (9027), 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) [2022-07-20 22:32:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 9027 transitions. [2022-07-20 22:32:37,924 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 9027 transitions. Word has length 28 [2022-07-20 22:32:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:37,924 INFO L495 AbstractCegarLoop]: Abstraction has 5637 states and 9027 transitions. [2022-07-20 22:32:37,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-20 22:32:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 9027 transitions. [2022-07-20 22:32:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 22:32:37,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:37,932 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] [2022-07-20 22:32:37,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 22:32:37,932 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:37,933 INFO L85 PathProgramCache]: Analyzing trace with hash -299143724, now seen corresponding path program 1 times [2022-07-20 22:32:37,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:37,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657850756] [2022-07-20 22:32:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:37,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:37,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:37,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657850756] [2022-07-20 22:32:37,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657850756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:37,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:37,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:37,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993079700] [2022-07-20 22:32:37,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:37,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:37,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:37,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:37,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:37,962 INFO L87 Difference]: Start difference. First operand 5637 states and 9027 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-20 22:32:38,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:38,025 INFO L93 Difference]: Finished difference Result 8457 states and 13509 transitions. [2022-07-20 22:32:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:38,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2022-07-20 22:32:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:38,043 INFO L225 Difference]: With dead ends: 8457 [2022-07-20 22:32:38,043 INFO L226 Difference]: Without dead ends: 5703 [2022-07-20 22:32:38,049 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 [2022-07-20 22:32:38,050 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 69 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:38,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 216 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2022-07-20 22:32:38,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5701. [2022-07-20 22:32:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5701 states, 5700 states have (on average 1.5836842105263158) internal successors, (9027), 5700 states have internal predecessors, (9027), 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) [2022-07-20 22:32:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5701 states to 5701 states and 9027 transitions. [2022-07-20 22:32:38,198 INFO L78 Accepts]: Start accepts. Automaton has 5701 states and 9027 transitions. Word has length 29 [2022-07-20 22:32:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:38,199 INFO L495 AbstractCegarLoop]: Abstraction has 5701 states and 9027 transitions. [2022-07-20 22:32:38,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-20 22:32:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5701 states and 9027 transitions. [2022-07-20 22:32:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 22:32:38,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:38,205 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] [2022-07-20 22:32:38,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 22:32:38,206 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:38,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:38,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1988087466, now seen corresponding path program 1 times [2022-07-20 22:32:38,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:38,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058034029] [2022-07-20 22:32:38,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:38,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:38,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:38,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058034029] [2022-07-20 22:32:38,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058034029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:38,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:38,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:38,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769077075] [2022-07-20 22:32:38,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:38,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:38,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:38,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:38,246 INFO L87 Difference]: Start difference. First operand 5701 states and 9027 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-20 22:32:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:38,351 INFO L93 Difference]: Finished difference Result 10249 states and 16581 transitions. [2022-07-20 22:32:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:38,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2022-07-20 22:32:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:38,373 INFO L225 Difference]: With dead ends: 10249 [2022-07-20 22:32:38,373 INFO L226 Difference]: Without dead ends: 10247 [2022-07-20 22:32:38,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:38,380 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 52 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:38,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 173 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10247 states. [2022-07-20 22:32:38,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10247 to 8197. [2022-07-20 22:32:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 8196 states have (on average 1.5386774036115178) internal successors, (12611), 8196 states have internal predecessors, (12611), 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) [2022-07-20 22:32:38,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 12611 transitions. [2022-07-20 22:32:38,604 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 12611 transitions. Word has length 29 [2022-07-20 22:32:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:38,605 INFO L495 AbstractCegarLoop]: Abstraction has 8197 states and 12611 transitions. [2022-07-20 22:32:38,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-20 22:32:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 12611 transitions. [2022-07-20 22:32:38,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 22:32:38,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:38,615 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] [2022-07-20 22:32:38,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-20 22:32:38,615 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:38,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:38,616 INFO L85 PathProgramCache]: Analyzing trace with hash 312735124, now seen corresponding path program 1 times [2022-07-20 22:32:38,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:38,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469667483] [2022-07-20 22:32:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:38,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:38,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:38,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469667483] [2022-07-20 22:32:38,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469667483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:38,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:38,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:38,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112695901] [2022-07-20 22:32:38,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:38,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:38,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:38,639 INFO L87 Difference]: Start difference. First operand 8197 states and 12611 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-20 22:32:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:38,792 INFO L93 Difference]: Finished difference Result 19209 states and 29765 transitions. [2022-07-20 22:32:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:38,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2022-07-20 22:32:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:38,815 INFO L225 Difference]: With dead ends: 19209 [2022-07-20 22:32:38,816 INFO L226 Difference]: Without dead ends: 11143 [2022-07-20 22:32:38,826 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 [2022-07-20 22:32:38,828 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 66 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:38,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 220 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:38,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11143 states. [2022-07-20 22:32:39,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11143 to 11141. [2022-07-20 22:32:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11141 states, 11140 states have (on average 1.5399461400359067) internal successors, (17155), 11140 states have internal predecessors, (17155), 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) [2022-07-20 22:32:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11141 states to 11141 states and 17155 transitions. [2022-07-20 22:32:39,173 INFO L78 Accepts]: Start accepts. Automaton has 11141 states and 17155 transitions. Word has length 29 [2022-07-20 22:32:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:39,173 INFO L495 AbstractCegarLoop]: Abstraction has 11141 states and 17155 transitions. [2022-07-20 22:32:39,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-20 22:32:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 11141 states and 17155 transitions. [2022-07-20 22:32:39,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-20 22:32:39,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:39,182 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] [2022-07-20 22:32:39,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-20 22:32:39,182 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:39,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:39,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1500955187, now seen corresponding path program 1 times [2022-07-20 22:32:39,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:39,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047397454] [2022-07-20 22:32:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:39,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:39,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:39,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047397454] [2022-07-20 22:32:39,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047397454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:39,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:39,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:39,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808760598] [2022-07-20 22:32:39,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:39,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:39,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:39,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:39,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:39,199 INFO L87 Difference]: Start difference. First operand 11141 states and 17155 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-20 22:32:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:39,295 INFO L93 Difference]: Finished difference Result 16713 states and 25669 transitions. [2022-07-20 22:32:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:39,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2022-07-20 22:32:39,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:39,320 INFO L225 Difference]: With dead ends: 16713 [2022-07-20 22:32:39,320 INFO L226 Difference]: Without dead ends: 11271 [2022-07-20 22:32:39,331 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 [2022-07-20 22:32:39,332 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 68 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:39,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 212 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11271 states. [2022-07-20 22:32:39,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11271 to 11269. [2022-07-20 22:32:39,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11269 states, 11268 states have (on average 1.522452964146255) internal successors, (17155), 11268 states have internal predecessors, (17155), 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) [2022-07-20 22:32:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 17155 transitions. [2022-07-20 22:32:39,660 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 17155 transitions. Word has length 30 [2022-07-20 22:32:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:39,661 INFO L495 AbstractCegarLoop]: Abstraction has 11269 states and 17155 transitions. [2022-07-20 22:32:39,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-20 22:32:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 17155 transitions. [2022-07-20 22:32:39,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-20 22:32:39,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:39,670 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] [2022-07-20 22:32:39,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-20 22:32:39,671 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:39,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:39,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1105068367, now seen corresponding path program 1 times [2022-07-20 22:32:39,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:39,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465530714] [2022-07-20 22:32:39,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:39,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:39,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:39,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465530714] [2022-07-20 22:32:39,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465530714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:39,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:39,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:39,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253219296] [2022-07-20 22:32:39,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:39,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:39,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:39,692 INFO L87 Difference]: Start difference. First operand 11269 states and 17155 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-20 22:32:39,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:39,915 INFO L93 Difference]: Finished difference Result 19977 states and 31109 transitions. [2022-07-20 22:32:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:39,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2022-07-20 22:32:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:39,957 INFO L225 Difference]: With dead ends: 19977 [2022-07-20 22:32:39,958 INFO L226 Difference]: Without dead ends: 19975 [2022-07-20 22:32:39,964 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 [2022-07-20 22:32:39,965 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 49 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:39,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 171 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:39,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19975 states. [2022-07-20 22:32:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19975 to 16389. [2022-07-20 22:32:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16389 states, 16388 states have (on average 1.476385159873078) internal successors, (24195), 16388 states have internal predecessors, (24195), 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) [2022-07-20 22:32:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16389 states to 16389 states and 24195 transitions. [2022-07-20 22:32:40,395 INFO L78 Accepts]: Start accepts. Automaton has 16389 states and 24195 transitions. Word has length 30 [2022-07-20 22:32:40,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:40,395 INFO L495 AbstractCegarLoop]: Abstraction has 16389 states and 24195 transitions. [2022-07-20 22:32:40,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-20 22:32:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 16389 states and 24195 transitions. [2022-07-20 22:32:40,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-20 22:32:40,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:40,414 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] [2022-07-20 22:32:40,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-20 22:32:40,414 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:40,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:40,415 INFO L85 PathProgramCache]: Analyzing trace with hash -889076339, now seen corresponding path program 1 times [2022-07-20 22:32:40,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:40,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057506117] [2022-07-20 22:32:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:40,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:40,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:40,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057506117] [2022-07-20 22:32:40,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057506117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:40,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:40,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:40,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236359918] [2022-07-20 22:32:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:40,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:40,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:40,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:40,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:40,438 INFO L87 Difference]: Start difference. First operand 16389 states and 24195 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-20 22:32:40,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:40,644 INFO L93 Difference]: Finished difference Result 38153 states and 56709 transitions. [2022-07-20 22:32:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:40,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2022-07-20 22:32:40,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:40,690 INFO L225 Difference]: With dead ends: 38153 [2022-07-20 22:32:40,690 INFO L226 Difference]: Without dead ends: 22023 [2022-07-20 22:32:40,711 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 [2022-07-20 22:32:40,712 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 65 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:40,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 221 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:40,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22023 states. [2022-07-20 22:32:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22023 to 22021. [2022-07-20 22:32:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22021 states, 22020 states have (on average 1.4766121707538602) internal successors, (32515), 22020 states have internal predecessors, (32515), 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) [2022-07-20 22:32:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22021 states to 22021 states and 32515 transitions. [2022-07-20 22:32:41,264 INFO L78 Accepts]: Start accepts. Automaton has 22021 states and 32515 transitions. Word has length 30 [2022-07-20 22:32:41,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:41,264 INFO L495 AbstractCegarLoop]: Abstraction has 22021 states and 32515 transitions. [2022-07-20 22:32:41,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-20 22:32:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 22021 states and 32515 transitions. [2022-07-20 22:32:41,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 22:32:41,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:41,283 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] [2022-07-20 22:32:41,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-20 22:32:41,283 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:41,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:41,284 INFO L85 PathProgramCache]: Analyzing trace with hash -102404535, now seen corresponding path program 1 times [2022-07-20 22:32:41,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:41,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448501446] [2022-07-20 22:32:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:41,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:41,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:41,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448501446] [2022-07-20 22:32:41,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448501446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:41,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:41,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:41,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981001288] [2022-07-20 22:32:41,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:41,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:41,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:41,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:41,301 INFO L87 Difference]: Start difference. First operand 22021 states and 32515 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-07-20 22:32:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:41,500 INFO L93 Difference]: Finished difference Result 33033 states and 48645 transitions. [2022-07-20 22:32:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:41,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2022-07-20 22:32:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:41,543 INFO L225 Difference]: With dead ends: 33033 [2022-07-20 22:32:41,543 INFO L226 Difference]: Without dead ends: 22279 [2022-07-20 22:32:41,561 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 [2022-07-20 22:32:41,562 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 67 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:41,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 208 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22279 states. [2022-07-20 22:32:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22279 to 22277. [2022-07-20 22:32:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22277 states, 22276 states have (on average 1.4596426647513019) internal successors, (32515), 22276 states have internal predecessors, (32515), 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) [2022-07-20 22:32:42,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22277 states to 22277 states and 32515 transitions. [2022-07-20 22:32:42,064 INFO L78 Accepts]: Start accepts. Automaton has 22277 states and 32515 transitions. Word has length 31 [2022-07-20 22:32:42,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:42,064 INFO L495 AbstractCegarLoop]: Abstraction has 22277 states and 32515 transitions. [2022-07-20 22:32:42,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-07-20 22:32:42,065 INFO L276 IsEmpty]: Start isEmpty. Operand 22277 states and 32515 transitions. [2022-07-20 22:32:42,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 22:32:42,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:42,090 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] [2022-07-20 22:32:42,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-20 22:32:42,090 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:42,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:42,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1791348277, now seen corresponding path program 1 times [2022-07-20 22:32:42,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:42,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063102708] [2022-07-20 22:32:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:42,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:42,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:42,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063102708] [2022-07-20 22:32:42,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063102708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:42,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:42,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:42,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376653580] [2022-07-20 22:32:42,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:42,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:42,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:42,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:42,108 INFO L87 Difference]: Start difference. First operand 22277 states and 32515 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-07-20 22:32:42,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:42,477 INFO L93 Difference]: Finished difference Result 38921 states and 58117 transitions. [2022-07-20 22:32:42,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:42,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2022-07-20 22:32:42,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:42,564 INFO L225 Difference]: With dead ends: 38921 [2022-07-20 22:32:42,564 INFO L226 Difference]: Without dead ends: 38919 [2022-07-20 22:32:42,577 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 [2022-07-20 22:32:42,578 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 46 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:42,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 169 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38919 states. [2022-07-20 22:32:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38919 to 32773. [2022-07-20 22:32:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32773 states, 32772 states have (on average 1.4139814475772001) internal successors, (46339), 32772 states have internal predecessors, (46339), 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) [2022-07-20 22:32:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32773 states to 32773 states and 46339 transitions. [2022-07-20 22:32:43,281 INFO L78 Accepts]: Start accepts. Automaton has 32773 states and 46339 transitions. Word has length 31 [2022-07-20 22:32:43,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:43,282 INFO L495 AbstractCegarLoop]: Abstraction has 32773 states and 46339 transitions. [2022-07-20 22:32:43,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-07-20 22:32:43,282 INFO L276 IsEmpty]: Start isEmpty. Operand 32773 states and 46339 transitions. [2022-07-20 22:32:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-20 22:32:43,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:43,309 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] [2022-07-20 22:32:43,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-20 22:32:43,310 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:43,310 INFO L85 PathProgramCache]: Analyzing trace with hash 509474313, now seen corresponding path program 1 times [2022-07-20 22:32:43,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:43,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955947785] [2022-07-20 22:32:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:43,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:43,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:43,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:43,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955947785] [2022-07-20 22:32:43,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955947785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:43,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:43,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:43,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391256169] [2022-07-20 22:32:43,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:43,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:43,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:43,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:43,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:43,328 INFO L87 Difference]: Start difference. First operand 32773 states and 46339 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-07-20 22:32:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:43,844 INFO L93 Difference]: Finished difference Result 75785 states and 107781 transitions. [2022-07-20 22:32:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:43,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2022-07-20 22:32:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:43,903 INFO L225 Difference]: With dead ends: 75785 [2022-07-20 22:32:43,903 INFO L226 Difference]: Without dead ends: 43527 [2022-07-20 22:32:43,928 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 [2022-07-20 22:32:43,929 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:43,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 222 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43527 states. [2022-07-20 22:32:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43527 to 43525. [2022-07-20 22:32:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43525 states, 43524 states have (on average 1.4117038875103392) internal successors, (61443), 43524 states have internal predecessors, (61443), 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) [2022-07-20 22:32:44,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43525 states to 43525 states and 61443 transitions. [2022-07-20 22:32:44,770 INFO L78 Accepts]: Start accepts. Automaton has 43525 states and 61443 transitions. Word has length 31 [2022-07-20 22:32:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:44,770 INFO L495 AbstractCegarLoop]: Abstraction has 43525 states and 61443 transitions. [2022-07-20 22:32:44,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-07-20 22:32:44,771 INFO L276 IsEmpty]: Start isEmpty. Operand 43525 states and 61443 transitions. [2022-07-20 22:32:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-20 22:32:44,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:44,794 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] [2022-07-20 22:32:44,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-20 22:32:44,794 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash 302993058, now seen corresponding path program 1 times [2022-07-20 22:32:44,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:44,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798302315] [2022-07-20 22:32:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:44,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:44,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:44,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798302315] [2022-07-20 22:32:44,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798302315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:44,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:44,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:44,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395252801] [2022-07-20 22:32:44,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:44,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:44,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:44,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:44,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:44,812 INFO L87 Difference]: Start difference. First operand 43525 states and 61443 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-20 22:32:45,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:45,247 INFO L93 Difference]: Finished difference Result 65289 states and 91909 transitions. [2022-07-20 22:32:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:45,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2022-07-20 22:32:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:45,309 INFO L225 Difference]: With dead ends: 65289 [2022-07-20 22:32:45,309 INFO L226 Difference]: Without dead ends: 44039 [2022-07-20 22:32:45,328 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 [2022-07-20 22:32:45,329 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 66 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:45,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 204 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:45,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44039 states. [2022-07-20 22:32:45,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44039 to 44037. [2022-07-20 22:32:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44037 states, 44036 states have (on average 1.395290217095104) internal successors, (61443), 44036 states have internal predecessors, (61443), 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) [2022-07-20 22:32:46,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44037 states to 44037 states and 61443 transitions. [2022-07-20 22:32:46,198 INFO L78 Accepts]: Start accepts. Automaton has 44037 states and 61443 transitions. Word has length 32 [2022-07-20 22:32:46,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:46,198 INFO L495 AbstractCegarLoop]: Abstraction has 44037 states and 61443 transitions. [2022-07-20 22:32:46,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-20 22:32:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 44037 states and 61443 transitions. [2022-07-20 22:32:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-20 22:32:46,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:46,222 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] [2022-07-20 22:32:46,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-20 22:32:46,223 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:46,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1385950684, now seen corresponding path program 1 times [2022-07-20 22:32:46,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:46,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725113739] [2022-07-20 22:32:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:46,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:46,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:46,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725113739] [2022-07-20 22:32:46,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725113739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:46,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:46,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:46,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603066343] [2022-07-20 22:32:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:46,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:46,245 INFO L87 Difference]: Start difference. First operand 44037 states and 61443 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-20 22:32:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:47,033 INFO L93 Difference]: Finished difference Result 129033 states and 178181 transitions. [2022-07-20 22:32:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:47,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2022-07-20 22:32:47,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:47,144 INFO L225 Difference]: With dead ends: 129033 [2022-07-20 22:32:47,145 INFO L226 Difference]: Without dead ends: 86023 [2022-07-20 22:32:47,173 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 [2022-07-20 22:32:47,174 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:47,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86023 states. [2022-07-20 22:32:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86023 to 86021. [2022-07-20 22:32:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86021 states, 86020 states have (on average 1.357114624505929) internal successors, (116739), 86020 states have internal predecessors, (116739), 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) [2022-07-20 22:32:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86021 states to 86021 states and 116739 transitions. [2022-07-20 22:32:48,540 INFO L78 Accepts]: Start accepts. Automaton has 86021 states and 116739 transitions. Word has length 32 [2022-07-20 22:32:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:48,540 INFO L495 AbstractCegarLoop]: Abstraction has 86021 states and 116739 transitions. [2022-07-20 22:32:48,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-20 22:32:48,540 INFO L276 IsEmpty]: Start isEmpty. Operand 86021 states and 116739 transitions. [2022-07-20 22:32:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-20 22:32:48,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:48,585 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] [2022-07-20 22:32:48,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-20 22:32:48,586 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:48,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:48,586 INFO L85 PathProgramCache]: Analyzing trace with hash 608194022, now seen corresponding path program 1 times [2022-07-20 22:32:48,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:48,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324817391] [2022-07-20 22:32:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:48,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:48,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:48,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324817391] [2022-07-20 22:32:48,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324817391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:48,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:48,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:48,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132937573] [2022-07-20 22:32:48,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:48,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:48,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:48,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:48,605 INFO L87 Difference]: Start difference. First operand 86021 states and 116739 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-20 22:32:49,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:49,461 INFO L93 Difference]: Finished difference Result 96265 states and 135173 transitions. [2022-07-20 22:32:49,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:49,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2022-07-20 22:32:49,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:49,571 INFO L225 Difference]: With dead ends: 96265 [2022-07-20 22:32:49,571 INFO L226 Difference]: Without dead ends: 96263 [2022-07-20 22:32:49,591 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 [2022-07-20 22:32:49,591 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 43 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:49,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 220 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:49,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96263 states. [2022-07-20 22:32:50,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96263 to 86021. [2022-07-20 22:32:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86021 states, 86020 states have (on average 1.345210416182283) internal successors, (115715), 86020 states have internal predecessors, (115715), 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) [2022-07-20 22:32:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86021 states to 86021 states and 115715 transitions. [2022-07-20 22:32:51,008 INFO L78 Accepts]: Start accepts. Automaton has 86021 states and 115715 transitions. Word has length 32 [2022-07-20 22:32:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:51,008 INFO L495 AbstractCegarLoop]: Abstraction has 86021 states and 115715 transitions. [2022-07-20 22:32:51,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2022-07-20 22:32:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 86021 states and 115715 transitions. [2022-07-20 22:32:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-20 22:32:51,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:51,051 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] [2022-07-20 22:32:51,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-20 22:32:51,051 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:51,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:51,051 INFO L85 PathProgramCache]: Analyzing trace with hash -14583106, now seen corresponding path program 1 times [2022-07-20 22:32:51,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:51,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421388401] [2022-07-20 22:32:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:51,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:51,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:51,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421388401] [2022-07-20 22:32:51,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421388401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:51,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:51,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:51,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886225229] [2022-07-20 22:32:51,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:51,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:51,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:51,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:51,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:51,070 INFO L87 Difference]: Start difference. First operand 86021 states and 115715 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-07-20 22:32:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:52,256 INFO L93 Difference]: Finished difference Result 146441 states and 200709 transitions. [2022-07-20 22:32:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2022-07-20 22:32:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:52,447 INFO L225 Difference]: With dead ends: 146441 [2022-07-20 22:32:52,448 INFO L226 Difference]: Without dead ends: 146439 [2022-07-20 22:32:52,475 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 [2022-07-20 22:32:52,476 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 40 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:52,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 165 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:52,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146439 states. [2022-07-20 22:32:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146439 to 130053. [2022-07-20 22:32:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130053 states, 130052 states have (on average 1.3070694799003475) internal successors, (169987), 130052 states have internal predecessors, (169987), 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) [2022-07-20 22:32:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130053 states to 130053 states and 169987 transitions. [2022-07-20 22:32:54,554 INFO L78 Accepts]: Start accepts. Automaton has 130053 states and 169987 transitions. Word has length 33 [2022-07-20 22:32:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:54,554 INFO L495 AbstractCegarLoop]: Abstraction has 130053 states and 169987 transitions. [2022-07-20 22:32:54,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-07-20 22:32:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 130053 states and 169987 transitions. [2022-07-20 22:32:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-20 22:32:54,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:54,617 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] [2022-07-20 22:32:54,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-20 22:32:54,617 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:54,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2008727812, now seen corresponding path program 1 times [2022-07-20 22:32:54,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:54,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3253806] [2022-07-20 22:32:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:54,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:54,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:54,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:54,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3253806] [2022-07-20 22:32:54,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3253806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:54,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:54,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:54,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919892282] [2022-07-20 22:32:54,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:54,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:54,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:54,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:54,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:54,633 INFO L87 Difference]: Start difference. First operand 130053 states and 169987 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-07-20 22:32:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:32:56,409 INFO L93 Difference]: Finished difference Result 297993 states and 391173 transitions. [2022-07-20 22:32:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:32:56,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 33 [2022-07-20 22:32:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:32:56,629 INFO L225 Difference]: With dead ends: 297993 [2022-07-20 22:32:56,629 INFO L226 Difference]: Without dead ends: 168967 [2022-07-20 22:32:56,700 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 [2022-07-20 22:32:56,701 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 62 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:32:56,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 224 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:32:56,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168967 states. [2022-07-20 22:32:58,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168967 to 168965. [2022-07-20 22:32:58,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168965 states, 168964 states have (on average 1.2969567481830448) internal successors, (219139), 168964 states have internal predecessors, (219139), 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) [2022-07-20 22:32:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168965 states to 168965 states and 219139 transitions. [2022-07-20 22:32:59,577 INFO L78 Accepts]: Start accepts. Automaton has 168965 states and 219139 transitions. Word has length 33 [2022-07-20 22:32:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:32:59,577 INFO L495 AbstractCegarLoop]: Abstraction has 168965 states and 219139 transitions. [2022-07-20 22:32:59,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-07-20 22:32:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 168965 states and 219139 transitions. [2022-07-20 22:32:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-20 22:32:59,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:32:59,658 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] [2022-07-20 22:32:59,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-20 22:32:59,659 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:32:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:32:59,659 INFO L85 PathProgramCache]: Analyzing trace with hash -451860807, now seen corresponding path program 1 times [2022-07-20 22:32:59,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:32:59,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454706994] [2022-07-20 22:32:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:32:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:32:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:32:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:32:59,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:32:59,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454706994] [2022-07-20 22:32:59,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454706994] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:32:59,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:32:59,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:32:59,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322374573] [2022-07-20 22:32:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:32:59,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:32:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:32:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:32:59,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:32:59,677 INFO L87 Difference]: Start difference. First operand 168965 states and 219139 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-07-20 22:33:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:01,109 INFO L93 Difference]: Finished difference Result 254985 states and 330757 transitions. [2022-07-20 22:33:01,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:33:01,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2022-07-20 22:33:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:01,310 INFO L225 Difference]: With dead ends: 254985 [2022-07-20 22:33:01,311 INFO L226 Difference]: Without dead ends: 172039 [2022-07-20 22:33:01,368 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 [2022-07-20 22:33:01,369 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 64 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:33:01,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 196 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:33:01,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172039 states. [2022-07-20 22:33:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172039 to 172037. [2022-07-20 22:33:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172037 states, 172036 states have (on average 1.2857018298495664) internal successors, (221187), 172036 states have internal predecessors, (221187), 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) [2022-07-20 22:33:04,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172037 states to 172037 states and 221187 transitions. [2022-07-20 22:33:04,287 INFO L78 Accepts]: Start accepts. Automaton has 172037 states and 221187 transitions. Word has length 34 [2022-07-20 22:33:04,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:04,287 INFO L495 AbstractCegarLoop]: Abstraction has 172037 states and 221187 transitions. [2022-07-20 22:33:04,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-07-20 22:33:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 172037 states and 221187 transitions. [2022-07-20 22:33:04,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-20 22:33:04,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:04,371 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] [2022-07-20 22:33:04,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-20 22:33:04,372 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:04,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:04,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2140804549, now seen corresponding path program 1 times [2022-07-20 22:33:04,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:04,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13292226] [2022-07-20 22:33:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:04,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:33:04,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:04,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13292226] [2022-07-20 22:33:04,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13292226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:04,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:04,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:33:04,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044233407] [2022-07-20 22:33:04,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:04,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:33:04,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:33:04,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:33:04,388 INFO L87 Difference]: Start difference. First operand 172037 states and 221187 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-07-20 22:33:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:33:06,629 INFO L93 Difference]: Finished difference Result 286729 states and 372741 transitions. [2022-07-20 22:33:06,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:33:06,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2022-07-20 22:33:06,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:33:07,020 INFO L225 Difference]: With dead ends: 286729 [2022-07-20 22:33:07,020 INFO L226 Difference]: Without dead ends: 286727 [2022-07-20 22:33:07,078 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 [2022-07-20 22:33:07,079 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 37 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:33:07,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 163 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:33:07,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286727 states. [2022-07-20 22:33:10,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286727 to 262149. [2022-07-20 22:33:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262149 states, 262148 states have (on average 1.2499923707218823) internal successors, (327683), 262148 states have internal predecessors, (327683), 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) [2022-07-20 22:33:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262149 states to 262149 states and 327683 transitions. [2022-07-20 22:33:11,152 INFO L78 Accepts]: Start accepts. Automaton has 262149 states and 327683 transitions. Word has length 34 [2022-07-20 22:33:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:33:11,153 INFO L495 AbstractCegarLoop]: Abstraction has 262149 states and 327683 transitions. [2022-07-20 22:33:11,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2022-07-20 22:33:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand 262149 states and 327683 transitions. [2022-07-20 22:33:11,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-20 22:33:11,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:33:11,338 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] [2022-07-20 22:33:11,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-20 22:33:11,338 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:33:11,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:33:11,339 INFO L85 PathProgramCache]: Analyzing trace with hash 160018041, now seen corresponding path program 1 times [2022-07-20 22:33:11,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:33:11,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654400625] [2022-07-20 22:33:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:33:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:33:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:33:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:33:11,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:33:11,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654400625] [2022-07-20 22:33:11,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654400625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:33:11,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:33:11,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:33:11,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489984314] [2022-07-20 22:33:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:33:11,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:33:11,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:33:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:33:11,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:33:11,373 INFO L87 Difference]: Start difference. First operand 262149 states and 327683 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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)