./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem18_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/eca-rers2012/Problem18_label20.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 839a6dcefe0eda0c15199e733b50fa28a6af9f9aed319dba01e519ca448457f3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:25:42,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:25:42,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:25:42,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:25:42,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:25:42,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:25:42,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:25:42,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:25:42,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:25:42,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:25:42,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:25:42,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:25:42,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:25:42,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:25:42,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:25:42,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:25:42,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:25:42,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:25:42,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:25:42,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:25:42,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:25:42,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:25:42,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:25:42,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:25:42,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:25:42,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:25:42,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:25:42,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:25:42,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:25:42,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:25:42,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:25:42,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:25:42,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:25:42,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:25:42,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:25:42,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:25:42,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:25:42,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:25:42,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:25:42,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:25:42,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:25:42,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 11:25:42,707 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:25:42,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:25:42,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:25:42,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:25:42,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:25:42,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:25:42,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:25:42,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:25:42,710 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:25:42,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:25:42,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:25:42,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 11:25:42,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:25:42,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:25:42,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:25:42,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:25:42,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:25:42,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:25:42,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:25:42,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:25:42,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:25:42,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:25:42,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:25:42,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:25:42,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:25:42,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:25:42,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:25:42,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:25:42,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 11:25:42,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 11:25:42,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:25:42,716 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:25:42,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:25:42,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:25:42,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 839a6dcefe0eda0c15199e733b50fa28a6af9f9aed319dba01e519ca448457f3 [2021-12-21 11:25:42,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:25:42,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:25:43,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:25:43,002 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:25:43,002 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:25:43,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label20.c [2021-12-21 11:25:43,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbf40e520/c7a2441f44a24a2cb698e3edfba73485/FLAGf69ae7624 [2021-12-21 11:25:43,658 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:25:43,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label20.c [2021-12-21 11:25:43,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbf40e520/c7a2441f44a24a2cb698e3edfba73485/FLAGf69ae7624 [2021-12-21 11:25:43,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbf40e520/c7a2441f44a24a2cb698e3edfba73485 [2021-12-21 11:25:43,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:25:43,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:25:43,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:25:43,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:25:43,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:25:43,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:25:43" (1/1) ... [2021-12-21 11:25:43,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374ed893 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:43, skipping insertion in model container [2021-12-21 11:25:43,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:25:43" (1/1) ... [2021-12-21 11:25:43,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:25:43,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:25:44,137 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/eca-rers2012/Problem18_label20.c[1084,1097] [2021-12-21 11:25:44,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:25:44,817 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:25:44,830 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/eca-rers2012/Problem18_label20.c[1084,1097] [2021-12-21 11:25:45,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:25:45,106 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:25:45,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45 WrapperNode [2021-12-21 11:25:45,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:25:45,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:25:45,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:25:45,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:25:45,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (1/1) ... [2021-12-21 11:25:45,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (1/1) ... [2021-12-21 11:25:45,350 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2021-12-21 11:25:45,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:25:45,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:25:45,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:25:45,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:25:45,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (1/1) ... [2021-12-21 11:25:45,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (1/1) ... [2021-12-21 11:25:45,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (1/1) ... [2021-12-21 11:25:45,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (1/1) ... [2021-12-21 11:25:45,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (1/1) ... [2021-12-21 11:25:45,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (1/1) ... [2021-12-21 11:25:45,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (1/1) ... [2021-12-21 11:25:45,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:25:45,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:25:45,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:25:45,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:25:45,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (1/1) ... [2021-12-21 11:25:45,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:25:45,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:25:45,588 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) [2021-12-21 11:25:45,610 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 [2021-12-21 11:25:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:25:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 11:25:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:25:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:25:45,690 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:25:45,691 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:25:48,446 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:25:48,462 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:25:48,462 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 11:25:48,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:25:48 BoogieIcfgContainer [2021-12-21 11:25:48,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:25:48,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:25:48,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:25:48,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:25:48,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:25:43" (1/3) ... [2021-12-21 11:25:48,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7f9619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:25:48, skipping insertion in model container [2021-12-21 11:25:48,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:25:45" (2/3) ... [2021-12-21 11:25:48,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7f9619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:25:48, skipping insertion in model container [2021-12-21 11:25:48,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:25:48" (3/3) ... [2021-12-21 11:25:48,474 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label20.c [2021-12-21 11:25:48,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:25:48,479 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:25:48,526 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:25:48,533 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 11:25:48,533 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:25:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:48,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-21 11:25:48,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:25:48,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-21 11:25:48,574 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:25:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:25:48,579 INFO L85 PathProgramCache]: Analyzing trace with hash 889694410, now seen corresponding path program 1 times [2021-12-21 11:25:48,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:25:48,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543920879] [2021-12-21 11:25:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:25:48,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:25:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:25:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:25:48,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:25:48,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543920879] [2021-12-21 11:25:48,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543920879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:25:48,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:25:48,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:25:48,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500611185] [2021-12-21 11:25:48,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:25:48,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:25:48,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:25:48,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:25:48,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:25:48,773 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:51,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:25:51,553 INFO L93 Difference]: Finished difference Result 2205 states and 4266 transitions. [2021-12-21 11:25:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:25:51,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-21 11:25:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:25:51,573 INFO L225 Difference]: With dead ends: 2205 [2021-12-21 11:25:51,573 INFO L226 Difference]: Without dead ends: 1384 [2021-12-21 11:25:51,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:25:51,584 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 713 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-21 11:25:51,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 430 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-21 11:25:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-12-21 11:25:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2021-12-21 11:25:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.6514822848879247) internal successors, (2284), 1383 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:51,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2284 transitions. [2021-12-21 11:25:51,674 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2284 transitions. Word has length 6 [2021-12-21 11:25:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:25:51,675 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 2284 transitions. [2021-12-21 11:25:51,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2284 transitions. [2021-12-21 11:25:51,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-21 11:25:51,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:25:51,678 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:25:51,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 11:25:51,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:25:51,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:25:51,679 INFO L85 PathProgramCache]: Analyzing trace with hash -400028237, now seen corresponding path program 1 times [2021-12-21 11:25:51,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:25:51,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675092199] [2021-12-21 11:25:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:25:51,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:25:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:25:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:25:51,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:25:51,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675092199] [2021-12-21 11:25:51,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675092199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:25:51,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:25:51,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:25:51,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420239703] [2021-12-21 11:25:51,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:25:51,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:25:51,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:25:51,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:25:51,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:25:51,816 INFO L87 Difference]: Start difference. First operand 1384 states and 2284 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:25:54,305 INFO L93 Difference]: Finished difference Result 4146 states and 6847 transitions. [2021-12-21 11:25:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:25:54,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-12-21 11:25:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:25:54,316 INFO L225 Difference]: With dead ends: 4146 [2021-12-21 11:25:54,316 INFO L226 Difference]: Without dead ends: 2764 [2021-12-21 11:25:54,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:25:54,319 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 712 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 11:25:54,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 531 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 11:25:54,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2021-12-21 11:25:54,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2021-12-21 11:25:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.404632645674991) internal successors, (3881), 2763 states have internal predecessors, (3881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:54,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3881 transitions. [2021-12-21 11:25:54,376 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3881 transitions. Word has length 72 [2021-12-21 11:25:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:25:54,377 INFO L470 AbstractCegarLoop]: Abstraction has 2764 states and 3881 transitions. [2021-12-21 11:25:54,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:54,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3881 transitions. [2021-12-21 11:25:54,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 11:25:54,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:25:54,383 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:25:54,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 11:25:54,385 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:25:54,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:25:54,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1916140395, now seen corresponding path program 1 times [2021-12-21 11:25:54,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:25:54,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964187934] [2021-12-21 11:25:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:25:54,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:25:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:25:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:25:54,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:25:54,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964187934] [2021-12-21 11:25:54,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964187934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:25:54,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:25:54,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:25:54,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390333415] [2021-12-21 11:25:54,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:25:54,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:25:54,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:25:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:25:54,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:25:54,480 INFO L87 Difference]: Start difference. First operand 2764 states and 3881 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:56,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:25:56,934 INFO L93 Difference]: Finished difference Result 8288 states and 11639 transitions. [2021-12-21 11:25:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:25:56,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-12-21 11:25:56,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:25:56,952 INFO L225 Difference]: With dead ends: 8288 [2021-12-21 11:25:56,952 INFO L226 Difference]: Without dead ends: 5526 [2021-12-21 11:25:56,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:25:56,956 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 709 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 11:25:56,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 434 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 11:25:56,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2021-12-21 11:25:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5524. [2021-12-21 11:25:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 1.2657975737823646) internal successors, (6991), 5523 states have internal predecessors, (6991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 6991 transitions. [2021-12-21 11:25:57,045 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 6991 transitions. Word has length 73 [2021-12-21 11:25:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:25:57,047 INFO L470 AbstractCegarLoop]: Abstraction has 5524 states and 6991 transitions. [2021-12-21 11:25:57,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 6991 transitions. [2021-12-21 11:25:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 11:25:57,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:25:57,052 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:25:57,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 11:25:57,053 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:25:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:25:57,054 INFO L85 PathProgramCache]: Analyzing trace with hash 510443924, now seen corresponding path program 1 times [2021-12-21 11:25:57,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:25:57,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685490996] [2021-12-21 11:25:57,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:25:57,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:25:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:25:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:25:57,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:25:57,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685490996] [2021-12-21 11:25:57,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685490996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:25:57,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:25:57,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:25:57,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56558559] [2021-12-21 11:25:57,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:25:57,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:25:57,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:25:57,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:25:57,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:25:57,185 INFO L87 Difference]: Start difference. First operand 5524 states and 6991 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:59,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:25:59,373 INFO L93 Difference]: Finished difference Result 13806 states and 17710 transitions. [2021-12-21 11:25:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:25:59,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-12-21 11:25:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:25:59,395 INFO L225 Difference]: With dead ends: 13806 [2021-12-21 11:25:59,396 INFO L226 Difference]: Without dead ends: 6904 [2021-12-21 11:25:59,404 INFO L932 BasicCegarLoop]: 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 [2021-12-21 11:25:59,405 INFO L933 BasicCegarLoop]: 1195 mSDtfsCounter, 749 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 904 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 904 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-21 11:25:59,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 1202 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [904 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-21 11:25:59,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2021-12-21 11:25:59,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 6904. [2021-12-21 11:25:59,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.105606258148631) internal successors, (7632), 6903 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 7632 transitions. [2021-12-21 11:25:59,521 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 7632 transitions. Word has length 99 [2021-12-21 11:25:59,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:25:59,522 INFO L470 AbstractCegarLoop]: Abstraction has 6904 states and 7632 transitions. [2021-12-21 11:25:59,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:25:59,523 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 7632 transitions. [2021-12-21 11:25:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-12-21 11:25:59,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:25:59,529 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:25:59,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 11:25:59,530 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:25:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:25:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1450133345, now seen corresponding path program 1 times [2021-12-21 11:25:59,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:25:59,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987358303] [2021-12-21 11:25:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:25:59,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:25:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:25:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-21 11:25:59,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:25:59,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987358303] [2021-12-21 11:25:59,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987358303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:25:59,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:25:59,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:25:59,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141745372] [2021-12-21 11:25:59,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:25:59,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 11:25:59,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:25:59,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 11:25:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 11:25:59,770 INFO L87 Difference]: Start difference. First operand 6904 states and 7632 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:02,372 INFO L93 Difference]: Finished difference Result 17258 states and 18886 transitions. [2021-12-21 11:26:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 11:26:02,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2021-12-21 11:26:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:02,415 INFO L225 Difference]: With dead ends: 17258 [2021-12-21 11:26:02,416 INFO L226 Difference]: Without dead ends: 10356 [2021-12-21 11:26:02,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 11:26:02,426 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 1874 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3369 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:02,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1874 Valid, 260 Invalid, 3439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 11:26:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10356 states. [2021-12-21 11:26:02,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10356 to 10354. [2021-12-21 11:26:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10354 states, 10353 states have (on average 1.0801699990340965) internal successors, (11183), 10353 states have internal predecessors, (11183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10354 states to 10354 states and 11183 transitions. [2021-12-21 11:26:02,588 INFO L78 Accepts]: Start accepts. Automaton has 10354 states and 11183 transitions. Word has length 293 [2021-12-21 11:26:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:02,589 INFO L470 AbstractCegarLoop]: Abstraction has 10354 states and 11183 transitions. [2021-12-21 11:26:02,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:02,593 INFO L276 IsEmpty]: Start isEmpty. Operand 10354 states and 11183 transitions. [2021-12-21 11:26:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-12-21 11:26:02,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:02,598 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:02,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 11:26:02,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1097986831, now seen corresponding path program 1 times [2021-12-21 11:26:02,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:02,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743882005] [2021-12-21 11:26:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:02,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-21 11:26:02,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:02,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743882005] [2021-12-21 11:26:02,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743882005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:02,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:02,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:26:02,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559520624] [2021-12-21 11:26:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:02,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:02,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:02,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:02,834 INFO L87 Difference]: Start difference. First operand 10354 states and 11183 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:04,372 INFO L93 Difference]: Finished difference Result 23466 states and 25322 transitions. [2021-12-21 11:26:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:04,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 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 372 [2021-12-21 11:26:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:04,396 INFO L225 Difference]: With dead ends: 23466 [2021-12-21 11:26:04,397 INFO L226 Difference]: Without dead ends: 13114 [2021-12-21 11:26:04,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:04,407 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 444 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:04,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 59 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 11:26:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2021-12-21 11:26:04,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 13114. [2021-12-21 11:26:04,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13114 states, 13113 states have (on average 1.0654312514298787) internal successors, (13971), 13113 states have internal predecessors, (13971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13114 states to 13114 states and 13971 transitions. [2021-12-21 11:26:04,556 INFO L78 Accepts]: Start accepts. Automaton has 13114 states and 13971 transitions. Word has length 372 [2021-12-21 11:26:04,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:04,557 INFO L470 AbstractCegarLoop]: Abstraction has 13114 states and 13971 transitions. [2021-12-21 11:26:04,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:04,557 INFO L276 IsEmpty]: Start isEmpty. Operand 13114 states and 13971 transitions. [2021-12-21 11:26:04,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-12-21 11:26:04,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:04,563 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:04,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 11:26:04,564 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:04,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:04,564 INFO L85 PathProgramCache]: Analyzing trace with hash 797065656, now seen corresponding path program 1 times [2021-12-21 11:26:04,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:04,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316914293] [2021-12-21 11:26:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:04,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-12-21 11:26:04,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:04,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316914293] [2021-12-21 11:26:04,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316914293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:04,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:04,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:04,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887133415] [2021-12-21 11:26:04,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:04,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:04,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:04,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:04,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:04,758 INFO L87 Difference]: Start difference. First operand 13114 states and 13971 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:06,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:06,308 INFO L93 Difference]: Finished difference Result 26226 states and 27940 transitions. [2021-12-21 11:26:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:06,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 458 [2021-12-21 11:26:06,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:06,329 INFO L225 Difference]: With dead ends: 26226 [2021-12-21 11:26:06,329 INFO L226 Difference]: Without dead ends: 13114 [2021-12-21 11:26:06,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:06,340 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 791 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:06,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 746 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 11:26:06,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2021-12-21 11:26:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 13114. [2021-12-21 11:26:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13114 states, 13113 states have (on average 1.0573476702508962) internal successors, (13865), 13113 states have internal predecessors, (13865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13114 states to 13114 states and 13865 transitions. [2021-12-21 11:26:06,485 INFO L78 Accepts]: Start accepts. Automaton has 13114 states and 13865 transitions. Word has length 458 [2021-12-21 11:26:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:06,486 INFO L470 AbstractCegarLoop]: Abstraction has 13114 states and 13865 transitions. [2021-12-21 11:26:06,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 13114 states and 13865 transitions. [2021-12-21 11:26:06,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2021-12-21 11:26:06,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:06,498 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:06,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 11:26:06,499 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:06,499 INFO L85 PathProgramCache]: Analyzing trace with hash -69953179, now seen corresponding path program 1 times [2021-12-21 11:26:06,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:06,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797150416] [2021-12-21 11:26:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:06,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-12-21 11:26:06,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:06,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797150416] [2021-12-21 11:26:06,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797150416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:06,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:06,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:06,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997872694] [2021-12-21 11:26:06,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:06,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:06,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:06,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:06,724 INFO L87 Difference]: Start difference. First operand 13114 states and 13865 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:08,294 INFO L93 Difference]: Finished difference Result 28986 states and 30868 transitions. [2021-12-21 11:26:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:08,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 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 548 [2021-12-21 11:26:08,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:08,320 INFO L225 Difference]: With dead ends: 28986 [2021-12-21 11:26:08,320 INFO L226 Difference]: Without dead ends: 15874 [2021-12-21 11:26:08,334 INFO L932 BasicCegarLoop]: 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 [2021-12-21 11:26:08,335 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:08,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 938 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 11:26:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15874 states. [2021-12-21 11:26:08,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15874 to 15184. [2021-12-21 11:26:08,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15184 states, 15183 states have (on average 1.055851939669367) internal successors, (16031), 15183 states have internal predecessors, (16031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:08,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15184 states to 15184 states and 16031 transitions. [2021-12-21 11:26:08,515 INFO L78 Accepts]: Start accepts. Automaton has 15184 states and 16031 transitions. Word has length 548 [2021-12-21 11:26:08,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:08,518 INFO L470 AbstractCegarLoop]: Abstraction has 15184 states and 16031 transitions. [2021-12-21 11:26:08,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 15184 states and 16031 transitions. [2021-12-21 11:26:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2021-12-21 11:26:08,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:08,526 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:08,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 11:26:08,528 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1495544034, now seen corresponding path program 1 times [2021-12-21 11:26:08,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:08,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666072071] [2021-12-21 11:26:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:08,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:08,740 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 494 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-21 11:26:08,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:08,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666072071] [2021-12-21 11:26:08,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666072071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:08,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:08,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:08,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963361852] [2021-12-21 11:26:08,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:08,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:08,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:08,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:08,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:08,743 INFO L87 Difference]: Start difference. First operand 15184 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:10,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:10,434 INFO L93 Difference]: Finished difference Result 40716 states and 43099 transitions. [2021-12-21 11:26:10,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:10,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 609 [2021-12-21 11:26:10,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:10,475 INFO L225 Difference]: With dead ends: 40716 [2021-12-21 11:26:10,475 INFO L226 Difference]: Without dead ends: 24844 [2021-12-21 11:26:10,488 INFO L932 BasicCegarLoop]: 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 [2021-12-21 11:26:10,489 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 574 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:10,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 924 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 11:26:10,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24844 states. [2021-12-21 11:26:10,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24844 to 24844. [2021-12-21 11:26:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24844 states, 24843 states have (on average 1.045244133156221) internal successors, (25967), 24843 states have internal predecessors, (25967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:10,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24844 states to 24844 states and 25967 transitions. [2021-12-21 11:26:10,746 INFO L78 Accepts]: Start accepts. Automaton has 24844 states and 25967 transitions. Word has length 609 [2021-12-21 11:26:10,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:10,747 INFO L470 AbstractCegarLoop]: Abstraction has 24844 states and 25967 transitions. [2021-12-21 11:26:10,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:10,747 INFO L276 IsEmpty]: Start isEmpty. Operand 24844 states and 25967 transitions. [2021-12-21 11:26:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2021-12-21 11:26:10,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:10,760 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:10,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 11:26:10,760 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:10,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1956431564, now seen corresponding path program 1 times [2021-12-21 11:26:10,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:10,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161735239] [2021-12-21 11:26:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:10,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:11,007 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-12-21 11:26:11,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:11,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161735239] [2021-12-21 11:26:11,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161735239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:11,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:11,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:11,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585070174] [2021-12-21 11:26:11,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:11,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:11,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:11,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:11,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:11,010 INFO L87 Difference]: Start difference. First operand 24844 states and 25967 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:12,594 INFO L93 Difference]: Finished difference Result 49686 states and 51932 transitions. [2021-12-21 11:26:12,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:12,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 682 [2021-12-21 11:26:12,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:12,625 INFO L225 Difference]: With dead ends: 49686 [2021-12-21 11:26:12,626 INFO L226 Difference]: Without dead ends: 23464 [2021-12-21 11:26:12,644 INFO L932 BasicCegarLoop]: 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 [2021-12-21 11:26:12,645 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 696 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:12,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 941 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 11:26:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23464 states. [2021-12-21 11:26:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23464 to 23464. [2021-12-21 11:26:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23464 states, 23463 states have (on average 1.0317095000639305) internal successors, (24207), 23463 states have internal predecessors, (24207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23464 states to 23464 states and 24207 transitions. [2021-12-21 11:26:12,871 INFO L78 Accepts]: Start accepts. Automaton has 23464 states and 24207 transitions. Word has length 682 [2021-12-21 11:26:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:12,872 INFO L470 AbstractCegarLoop]: Abstraction has 23464 states and 24207 transitions. [2021-12-21 11:26:12,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 23464 states and 24207 transitions. [2021-12-21 11:26:12,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2021-12-21 11:26:12,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:12,885 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:12,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 11:26:12,885 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1536609846, now seen corresponding path program 1 times [2021-12-21 11:26:12,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:12,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381419674] [2021-12-21 11:26:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:12,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2021-12-21 11:26:13,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:13,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381419674] [2021-12-21 11:26:13,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381419674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:13,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:13,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:13,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377984363] [2021-12-21 11:26:13,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:13,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:13,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:13,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:13,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:13,179 INFO L87 Difference]: Start difference. First operand 23464 states and 24207 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:14,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:14,816 INFO L93 Difference]: Finished difference Result 54516 states and 56364 transitions. [2021-12-21 11:26:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:14,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 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 729 [2021-12-21 11:26:14,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:14,852 INFO L225 Difference]: With dead ends: 54516 [2021-12-21 11:26:14,853 INFO L226 Difference]: Without dead ends: 31054 [2021-12-21 11:26:14,872 INFO L932 BasicCegarLoop]: 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 [2021-12-21 11:26:14,872 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 606 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:14,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 263 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 11:26:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31054 states. [2021-12-21 11:26:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31054 to 30364. [2021-12-21 11:26:15,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 30363 states have (on average 1.0294107960346475) internal successors, (31256), 30363 states have internal predecessors, (31256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 31256 transitions. [2021-12-21 11:26:15,257 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 31256 transitions. Word has length 729 [2021-12-21 11:26:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:15,258 INFO L470 AbstractCegarLoop]: Abstraction has 30364 states and 31256 transitions. [2021-12-21 11:26:15,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 31256 transitions. [2021-12-21 11:26:15,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2021-12-21 11:26:15,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:15,285 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:15,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 11:26:15,285 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:15,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:15,286 INFO L85 PathProgramCache]: Analyzing trace with hash 422605137, now seen corresponding path program 1 times [2021-12-21 11:26:15,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:15,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888806408] [2021-12-21 11:26:15,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:15,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 1135 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2021-12-21 11:26:15,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:15,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888806408] [2021-12-21 11:26:15,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888806408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:15,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:15,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:15,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940178577] [2021-12-21 11:26:15,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:15,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 11:26:15,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:15,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 11:26:15,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 11:26:15,824 INFO L87 Difference]: Start difference. First operand 30364 states and 31256 transitions. Second operand has 4 states, 4 states have (on average 205.25) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:18,090 INFO L93 Difference]: Finished difference Result 60726 states and 62510 transitions. [2021-12-21 11:26:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 11:26:18,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 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 1272 [2021-12-21 11:26:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:18,122 INFO L225 Difference]: With dead ends: 60726 [2021-12-21 11:26:18,122 INFO L226 Difference]: Without dead ends: 31054 [2021-12-21 11:26:18,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 11:26:18,139 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 967 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:18,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 91 Invalid, 3015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-21 11:26:18,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31054 states. [2021-12-21 11:26:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31054 to 30364. [2021-12-21 11:26:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 30363 states have (on average 1.0293119915686855) internal successors, (31253), 30363 states have internal predecessors, (31253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 31253 transitions. [2021-12-21 11:26:18,435 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 31253 transitions. Word has length 1272 [2021-12-21 11:26:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:18,436 INFO L470 AbstractCegarLoop]: Abstraction has 30364 states and 31253 transitions. [2021-12-21 11:26:18,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 31253 transitions. [2021-12-21 11:26:18,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1321 [2021-12-21 11:26:18,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:18,453 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:18,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 11:26:18,454 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:18,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:18,454 INFO L85 PathProgramCache]: Analyzing trace with hash -739889051, now seen corresponding path program 1 times [2021-12-21 11:26:18,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:18,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793713421] [2021-12-21 11:26:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:18,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 1107 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2021-12-21 11:26:19,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:19,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793713421] [2021-12-21 11:26:19,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793713421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:19,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:19,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:19,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666255092] [2021-12-21 11:26:19,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:19,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:19,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:19,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:19,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:19,029 INFO L87 Difference]: Start difference. First operand 30364 states and 31253 transitions. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:20,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:20,681 INFO L93 Difference]: Finished difference Result 69006 states and 71188 transitions. [2021-12-21 11:26:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:20,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 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 1320 [2021-12-21 11:26:20,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:20,716 INFO L225 Difference]: With dead ends: 69006 [2021-12-21 11:26:20,717 INFO L226 Difference]: Without dead ends: 38644 [2021-12-21 11:26:20,735 INFO L932 BasicCegarLoop]: 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 [2021-12-21 11:26:20,736 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 453 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:20,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 960 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 11:26:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38644 states. [2021-12-21 11:26:21,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38644 to 38644. [2021-12-21 11:26:21,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38644 states, 38643 states have (on average 1.0281034081204876) internal successors, (39729), 38643 states have internal predecessors, (39729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38644 states to 38644 states and 39729 transitions. [2021-12-21 11:26:21,095 INFO L78 Accepts]: Start accepts. Automaton has 38644 states and 39729 transitions. Word has length 1320 [2021-12-21 11:26:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:21,096 INFO L470 AbstractCegarLoop]: Abstraction has 38644 states and 39729 transitions. [2021-12-21 11:26:21,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 38644 states and 39729 transitions. [2021-12-21 11:26:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1373 [2021-12-21 11:26:21,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:21,114 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:21,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 11:26:21,114 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:21,115 INFO L85 PathProgramCache]: Analyzing trace with hash -91139209, now seen corresponding path program 1 times [2021-12-21 11:26:21,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:21,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225964833] [2021-12-21 11:26:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:21,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 1454 proven. 614 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-12-21 11:26:21,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:21,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225964833] [2021-12-21 11:26:21,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225964833] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 11:26:21,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031005476] [2021-12-21 11:26:21,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:21,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 11:26:21,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:26:21,989 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 11:26:21,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 11:26:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:22,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 11:26:22,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:26:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 1466 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2021-12-21 11:26:24,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:26:24,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031005476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:24,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 11:26:24,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-21 11:26:24,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667844264] [2021-12-21 11:26:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:24,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:24,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-21 11:26:24,192 INFO L87 Difference]: Start difference. First operand 38644 states and 39729 transitions. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:25,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:25,759 INFO L93 Difference]: Finished difference Result 90396 states and 93144 transitions. [2021-12-21 11:26:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:25,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 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 1372 [2021-12-21 11:26:25,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:25,819 INFO L225 Difference]: With dead ends: 90396 [2021-12-21 11:26:25,819 INFO L226 Difference]: Without dead ends: 52444 [2021-12-21 11:26:25,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1372 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-21 11:26:25,847 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 645 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:25,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 129 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 11:26:25,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52444 states. [2021-12-21 11:26:26,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52444 to 51754. [2021-12-21 11:26:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51754 states, 51753 states have (on average 1.0255637354356268) internal successors, (53076), 51753 states have internal predecessors, (53076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51754 states to 51754 states and 53076 transitions. [2021-12-21 11:26:26,398 INFO L78 Accepts]: Start accepts. Automaton has 51754 states and 53076 transitions. Word has length 1372 [2021-12-21 11:26:26,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:26,399 INFO L470 AbstractCegarLoop]: Abstraction has 51754 states and 53076 transitions. [2021-12-21 11:26:26,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:26,399 INFO L276 IsEmpty]: Start isEmpty. Operand 51754 states and 53076 transitions. [2021-12-21 11:26:26,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2021-12-21 11:26:26,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:26,423 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:26,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 11:26:26,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-21 11:26:26,625 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:26,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2105960827, now seen corresponding path program 1 times [2021-12-21 11:26:26,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:26,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079182548] [2021-12-21 11:26:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:26,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2519 backedges. 576 proven. 1316 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2021-12-21 11:26:27,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:27,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079182548] [2021-12-21 11:26:27,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079182548] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 11:26:27,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810050125] [2021-12-21 11:26:27,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:27,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 11:26:27,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:26:27,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 11:26:27,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 11:26:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:27,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1679 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 11:26:27,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:26:29,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2519 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 1957 trivial. 0 not checked. [2021-12-21 11:26:29,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:26:29,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810050125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:29,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 11:26:29,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-21 11:26:29,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91905356] [2021-12-21 11:26:29,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:29,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:29,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:29,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:29,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 11:26:29,505 INFO L87 Difference]: Start difference. First operand 51754 states and 53076 transitions. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:31,073 INFO L93 Difference]: Finished difference Result 102126 states and 104761 transitions. [2021-12-21 11:26:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 1428 [2021-12-21 11:26:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:31,118 INFO L225 Difference]: With dead ends: 102126 [2021-12-21 11:26:31,118 INFO L226 Difference]: Without dead ends: 51064 [2021-12-21 11:26:31,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1434 GetRequests, 1428 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 11:26:31,141 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 667 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:31,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 890 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 11:26:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51064 states. [2021-12-21 11:26:31,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51064 to 48304. [2021-12-21 11:26:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48304 states, 48303 states have (on average 1.0190257333913006) internal successors, (49222), 48303 states have internal predecessors, (49222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:31,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48304 states to 48304 states and 49222 transitions. [2021-12-21 11:26:31,639 INFO L78 Accepts]: Start accepts. Automaton has 48304 states and 49222 transitions. Word has length 1428 [2021-12-21 11:26:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:31,640 INFO L470 AbstractCegarLoop]: Abstraction has 48304 states and 49222 transitions. [2021-12-21 11:26:31,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 48304 states and 49222 transitions. [2021-12-21 11:26:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1452 [2021-12-21 11:26:31,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:31,671 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:31,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 11:26:31,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-21 11:26:31,872 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:31,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:31,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1712515049, now seen corresponding path program 1 times [2021-12-21 11:26:31,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:31,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421771864] [2021-12-21 11:26:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:31,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:32,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 1574 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2021-12-21 11:26:32,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421771864] [2021-12-21 11:26:32,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421771864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:32,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:32,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:32,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973512620] [2021-12-21 11:26:32,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:32,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:32,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:32,423 INFO L87 Difference]: Start difference. First operand 48304 states and 49222 transitions. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:26:33,928 INFO L93 Difference]: Finished difference Result 94536 states and 96363 transitions. [2021-12-21 11:26:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:26:33,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 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 1451 [2021-12-21 11:26:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:26:33,968 INFO L225 Difference]: With dead ends: 94536 [2021-12-21 11:26:33,968 INFO L226 Difference]: Without dead ends: 46924 [2021-12-21 11:26:33,991 INFO L932 BasicCegarLoop]: 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 [2021-12-21 11:26:33,991 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 587 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 11:26:33,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 942 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 11:26:34,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46924 states. [2021-12-21 11:26:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46924 to 46924. [2021-12-21 11:26:34,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46924 states, 46923 states have (on average 1.0175606845257124) internal successors, (47747), 46923 states have internal predecessors, (47747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46924 states to 46924 states and 47747 transitions. [2021-12-21 11:26:34,389 INFO L78 Accepts]: Start accepts. Automaton has 46924 states and 47747 transitions. Word has length 1451 [2021-12-21 11:26:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:26:34,390 INFO L470 AbstractCegarLoop]: Abstraction has 46924 states and 47747 transitions. [2021-12-21 11:26:34,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 11:26:34,390 INFO L276 IsEmpty]: Start isEmpty. Operand 46924 states and 47747 transitions. [2021-12-21 11:26:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2021-12-21 11:26:34,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:26:34,412 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:26:34,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 11:26:34,413 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:26:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:26:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1472813563, now seen corresponding path program 1 times [2021-12-21 11:26:34,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:26:34,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587467375] [2021-12-21 11:26:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:26:34,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:26:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:26:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1884 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 1865 trivial. 0 not checked. [2021-12-21 11:26:35,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:26:35,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587467375] [2021-12-21 11:26:35,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587467375] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:26:35,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:26:35,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:26:35,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641170150] [2021-12-21 11:26:35,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:26:35,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:26:35,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:26:35,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:26:35,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:26:35,028 INFO L87 Difference]: Start difference. First operand 46924 states and 47747 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)