./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem13_label02.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 48aec8d1d241a0a7736380f3571da3a89472d426f8d78df6e318e9a8d52f121e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 12:30:32,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:30:32,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:30:32,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 12:30:32,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 12:30:32,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 12:30:32,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 12:30:32,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 12:30:32,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 12:30:32,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 12:30:32,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 12:30:32,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 12:30:32,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:30:32,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:30:32,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:30:32,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:30:32,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:30:32,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:30:32,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:30:32,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:30:32,695 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:30:32,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:30:32,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:30:32,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:30:32,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:30:32,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 12:30:32,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 12:30:32,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 12:30:32,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 12:30:32,707 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 12:30:32,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 12:30:32,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 12:30:32,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 12:30:32,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 12:30:32,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 12:30:32,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 12:30:32,713 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 12:30:32,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 12:30:32,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 12:30:32,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:30:32,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:30:32,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:30:32,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 12:30:32,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:30:32,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:30:32,746 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:30:32,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:30:32,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 12:30:32,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 12:30:32,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:30:32,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:30:32,748 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:30:32,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:30:32,749 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:30:32,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:30:32,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:30:32,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:30:32,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 12:30:32,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 12:30:32,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 12:30:32,750 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:30:32,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:30:32,752 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:30:32,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 12:30:32,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:30:32,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:30:32,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 12:30:32,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:30:32,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:30:32,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 12:30:32,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 12:30:32,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:30:32,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 12:30:32,754 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 12:30:32,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 12:30:32,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 12:30:32,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48aec8d1d241a0a7736380f3571da3a89472d426f8d78df6e318e9a8d52f121e [2022-07-22 12:30:32,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:30:32,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:30:32,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:30:32,980 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:30:32,981 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:30:32,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label02.c [2022-07-22 12:30:33,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2988d12/c74965d4ec314e4fa18317ffe4198ba9/FLAGc198b8cb7 [2022-07-22 12:30:33,633 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:30:33,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label02.c [2022-07-22 12:30:33,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2988d12/c74965d4ec314e4fa18317ffe4198ba9/FLAGc198b8cb7 [2022-07-22 12:30:33,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc2988d12/c74965d4ec314e4fa18317ffe4198ba9 [2022-07-22 12:30:33,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:30:33,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 12:30:33,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:30:33,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:30:33,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:30:33,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:30:33" (1/1) ... [2022-07-22 12:30:33,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd47423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:33, skipping insertion in model container [2022-07-22 12:30:33,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:30:33" (1/1) ... [2022-07-22 12:30:33,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:30:33,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:30:34,252 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/Problem13_label02.c[5671,5684] [2022-07-22 12:30:35,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:30:35,041 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:30:35,066 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/Problem13_label02.c[5671,5684] [2022-07-22 12:30:35,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:30:35,522 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:30:35,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35 WrapperNode [2022-07-22 12:30:35,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:30:35,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:30:35,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:30:35,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:30:35,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (1/1) ... [2022-07-22 12:30:35,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (1/1) ... [2022-07-22 12:30:36,194 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-22 12:30:36,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:30:36,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:30:36,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:30:36,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:30:36,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (1/1) ... [2022-07-22 12:30:36,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (1/1) ... [2022-07-22 12:30:36,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (1/1) ... [2022-07-22 12:30:36,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (1/1) ... [2022-07-22 12:30:36,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (1/1) ... [2022-07-22 12:30:36,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (1/1) ... [2022-07-22 12:30:36,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (1/1) ... [2022-07-22 12:30:36,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:30:36,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:30:36,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:30:36,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:30:36,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (1/1) ... [2022-07-22 12:30:36,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 12:30:36,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:30:36,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 12:30:36,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 12:30:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:30:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:30:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:30:36,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:30:37,045 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:30:37,047 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:30:41,448 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:30:41,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:30:41,463 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 12:30:41,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:30:41 BoogieIcfgContainer [2022-07-22 12:30:41,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:30:41,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 12:30:41,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 12:30:41,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 12:30:41,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 12:30:33" (1/3) ... [2022-07-22 12:30:41,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2300f3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:30:41, skipping insertion in model container [2022-07-22 12:30:41,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:30:35" (2/3) ... [2022-07-22 12:30:41,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2300f3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 12:30:41, skipping insertion in model container [2022-07-22 12:30:41,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:30:41" (3/3) ... [2022-07-22 12:30:41,473 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label02.c [2022-07-22 12:30:41,485 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 12:30:41,485 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 12:30:41,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 12:30:41,548 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@11623f02, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@34165f44 [2022-07-22 12:30:41,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 12:30:41,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 12:30:41,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:41,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:30:41,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1453294289, now seen corresponding path program 1 times [2022-07-22 12:30:41,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:41,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324133208] [2022-07-22 12:30:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:41,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:30:41,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:41,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324133208] [2022-07-22 12:30:41,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324133208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:41,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:41,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:30:41,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728522186] [2022-07-22 12:30:41,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:41,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:30:41,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:30:41,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:30:41,917 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:48,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:30:48,209 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-07-22 12:30:48,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:30:48,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-07-22 12:30:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:30:48,235 INFO L225 Difference]: With dead ends: 3829 [2022-07-22 12:30:48,236 INFO L226 Difference]: Without dead ends: 2664 [2022-07-22 12:30:48,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 12:30:48,246 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2712 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2712 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:30:48,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2712 Valid, 1067 Invalid, 5856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-22 12:30:48,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-07-22 12:30:48,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-07-22 12:30:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-07-22 12:30:48,358 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 39 [2022-07-22 12:30:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:30:48,361 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-07-22 12:30:48,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-07-22 12:30:48,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-22 12:30:48,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:48,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 12:30:48,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 12:30:48,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:48,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1912821561, now seen corresponding path program 1 times [2022-07-22 12:30:48,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:48,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427994299] [2022-07-22 12:30:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:48,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 12:30:48,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:48,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427994299] [2022-07-22 12:30:48,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427994299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:48,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:48,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:30:48,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824714750] [2022-07-22 12:30:48,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:48,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:30:48,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:48,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:30:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:30:48,560 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:30:54,784 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2022-07-22 12:30:54,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:30:54,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2022-07-22 12:30:54,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:30:54,817 INFO L225 Difference]: With dead ends: 7864 [2022-07-22 12:30:54,818 INFO L226 Difference]: Without dead ends: 5990 [2022-07-22 12:30:54,828 INFO L412 NwaCegarLoop]: 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 [2022-07-22 12:30:54,830 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 1640 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6333 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 6333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:30:54,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 1191 Invalid, 7164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 6333 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-22 12:30:54,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-07-22 12:30:54,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2022-07-22 12:30:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2022-07-22 12:30:54,952 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 164 [2022-07-22 12:30:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:30:54,953 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2022-07-22 12:30:54,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2022-07-22 12:30:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-22 12:30:54,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:54,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:30:54,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 12:30:54,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:54,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:54,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1291731195, now seen corresponding path program 1 times [2022-07-22 12:30:54,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:54,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416957431] [2022-07-22 12:30:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 12:30:55,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:55,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416957431] [2022-07-22 12:30:55,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416957431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:55,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:55,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:30:55,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673838531] [2022-07-22 12:30:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:55,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:30:55,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:55,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:30:55,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:55,195 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:30:58,349 INFO L93 Difference]: Finished difference Result 15685 states and 23389 transitions. [2022-07-22 12:30:58,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:30:58,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 206 [2022-07-22 12:30:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:30:58,386 INFO L225 Difference]: With dead ends: 15685 [2022-07-22 12:30:58,386 INFO L226 Difference]: Without dead ends: 10615 [2022-07-22 12:30:58,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:58,397 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 918 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:30:58,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 916 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-22 12:30:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2022-07-22 12:30:58,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10608. [2022-07-22 12:30:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:58,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2022-07-22 12:30:58,624 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 206 [2022-07-22 12:30:58,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:30:58,626 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2022-07-22 12:30:58,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:30:58,627 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2022-07-22 12:30:58,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-22 12:30:58,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:30:58,631 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:30:58,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 12:30:58,631 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:30:58,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:30:58,634 INFO L85 PathProgramCache]: Analyzing trace with hash -333607138, now seen corresponding path program 1 times [2022-07-22 12:30:58,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:30:58,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690433746] [2022-07-22 12:30:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:30:58,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:30:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:30:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 12:30:58,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:30:58,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690433746] [2022-07-22 12:30:58,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690433746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:30:58,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:30:58,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:30:58,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483309336] [2022-07-22 12:30:58,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:30:58,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:30:58,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:30:58,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:30:58,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:30:58,784 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:02,025 INFO L93 Difference]: Finished difference Result 28349 states and 39239 transitions. [2022-07-22 12:31:02,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:02,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 220 [2022-07-22 12:31:02,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:02,088 INFO L225 Difference]: With dead ends: 28349 [2022-07-22 12:31:02,088 INFO L226 Difference]: Without dead ends: 18530 [2022-07-22 12:31:02,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:02,112 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 907 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2871 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:02,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 614 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2871 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 12:31:02,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18530 states. [2022-07-22 12:31:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18530 to 18523. [2022-07-22 12:31:02,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3250188964474678) internal successors, (24542), 18522 states have internal predecessors, (24542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24542 transitions. [2022-07-22 12:31:02,402 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24542 transitions. Word has length 220 [2022-07-22 12:31:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:02,403 INFO L495 AbstractCegarLoop]: Abstraction has 18523 states and 24542 transitions. [2022-07-22 12:31:02,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24542 transitions. [2022-07-22 12:31:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-22 12:31:02,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:02,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:31:02,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 12:31:02,408 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1947524445, now seen corresponding path program 1 times [2022-07-22 12:31:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:02,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406833621] [2022-07-22 12:31:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:02,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-22 12:31:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:02,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406833621] [2022-07-22 12:31:02,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406833621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:02,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:02,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:31:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464911504] [2022-07-22 12:31:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:02,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:02,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:02,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:02,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:02,554 INFO L87 Difference]: Start difference. First operand 18523 states and 24542 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:05,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:05,662 INFO L93 Difference]: Finished difference Result 51208 states and 68744 transitions. [2022-07-22 12:31:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:05,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 257 [2022-07-22 12:31:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:05,727 INFO L225 Difference]: With dead ends: 51208 [2022-07-22 12:31:05,728 INFO L226 Difference]: Without dead ends: 33474 [2022-07-22 12:31:05,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:05,750 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 860 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:05,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 986 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 12:31:05,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33474 states. [2022-07-22 12:31:06,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33474 to 31109. [2022-07-22 12:31:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31109 states, 31108 states have (on average 1.2544361579015044) internal successors, (39023), 31108 states have internal predecessors, (39023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:06,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31109 states to 31109 states and 39023 transitions. [2022-07-22 12:31:06,177 INFO L78 Accepts]: Start accepts. Automaton has 31109 states and 39023 transitions. Word has length 257 [2022-07-22 12:31:06,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:06,178 INFO L495 AbstractCegarLoop]: Abstraction has 31109 states and 39023 transitions. [2022-07-22 12:31:06,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 31109 states and 39023 transitions. [2022-07-22 12:31:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-07-22 12:31:06,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:06,186 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:06,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 12:31:06,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:06,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:06,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1064755178, now seen corresponding path program 1 times [2022-07-22 12:31:06,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:06,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991831808] [2022-07-22 12:31:06,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:06,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 12:31:06,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:06,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991831808] [2022-07-22 12:31:06,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991831808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:06,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:06,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:06,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710671542] [2022-07-22 12:31:06,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:06,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:06,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:06,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:06,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:06,311 INFO L87 Difference]: Start difference. First operand 31109 states and 39023 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:09,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:09,491 INFO L93 Difference]: Finished difference Result 87412 states and 110601 transitions. [2022-07-22 12:31:09,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:09,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 279 [2022-07-22 12:31:09,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:09,585 INFO L225 Difference]: With dead ends: 87412 [2022-07-22 12:31:09,586 INFO L226 Difference]: Without dead ends: 57092 [2022-07-22 12:31:09,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:09,788 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 889 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:09,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 907 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 12:31:09,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57092 states. [2022-07-22 12:31:10,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57092 to 57082. [2022-07-22 12:31:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57082 states, 57081 states have (on average 1.1981920428864246) internal successors, (68394), 57081 states have internal predecessors, (68394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:10,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57082 states to 57082 states and 68394 transitions. [2022-07-22 12:31:10,434 INFO L78 Accepts]: Start accepts. Automaton has 57082 states and 68394 transitions. Word has length 279 [2022-07-22 12:31:10,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:10,436 INFO L495 AbstractCegarLoop]: Abstraction has 57082 states and 68394 transitions. [2022-07-22 12:31:10,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 57082 states and 68394 transitions. [2022-07-22 12:31:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-22 12:31:10,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:10,447 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 12:31:10,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:10,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash -136295388, now seen corresponding path program 1 times [2022-07-22 12:31:10,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:10,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733275020] [2022-07-22 12:31:10,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:10,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 12:31:10,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:10,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733275020] [2022-07-22 12:31:10,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733275020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:10,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:10,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:10,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719263664] [2022-07-22 12:31:10,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:10,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 12:31:10,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:10,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 12:31:10,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 12:31:10,581 INFO L87 Difference]: Start difference. First operand 57082 states and 68394 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:17,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:17,187 INFO L93 Difference]: Finished difference Result 154524 states and 187111 transitions. [2022-07-22 12:31:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 12:31:17,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 307 [2022-07-22 12:31:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:17,324 INFO L225 Difference]: With dead ends: 154524 [2022-07-22 12:31:17,324 INFO L226 Difference]: Without dead ends: 98231 [2022-07-22 12:31:17,376 INFO L412 NwaCegarLoop]: 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 [2022-07-22 12:31:17,377 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1735 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6696 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 6696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:17,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1735 Valid, 743 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 6696 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-22 12:31:17,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98231 states. [2022-07-22 12:31:18,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98231 to 98101. [2022-07-22 12:31:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98101 states, 98100 states have (on average 1.1910601427115188) internal successors, (116843), 98100 states have internal predecessors, (116843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98101 states to 98101 states and 116843 transitions. [2022-07-22 12:31:18,734 INFO L78 Accepts]: Start accepts. Automaton has 98101 states and 116843 transitions. Word has length 307 [2022-07-22 12:31:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:18,734 INFO L495 AbstractCegarLoop]: Abstraction has 98101 states and 116843 transitions. [2022-07-22 12:31:18,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 98101 states and 116843 transitions. [2022-07-22 12:31:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-22 12:31:18,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:18,740 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:18,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 12:31:18,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:18,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:18,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2103186526, now seen corresponding path program 1 times [2022-07-22 12:31:18,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:18,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141906068] [2022-07-22 12:31:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:18,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:19,098 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-22 12:31:19,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:19,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141906068] [2022-07-22 12:31:19,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141906068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:19,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:19,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 12:31:19,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618612469] [2022-07-22 12:31:19,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:19,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:19,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:19,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:19,101 INFO L87 Difference]: Start difference. First operand 98101 states and 116843 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:22,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:22,456 INFO L93 Difference]: Finished difference Result 182032 states and 218402 transitions. [2022-07-22 12:31:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:22,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 322 [2022-07-22 12:31:22,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:22,588 INFO L225 Difference]: With dead ends: 182032 [2022-07-22 12:31:22,589 INFO L226 Difference]: Without dead ends: 98111 [2022-07-22 12:31:22,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:22,624 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:22,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:31:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98111 states. [2022-07-22 12:31:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98111 to 98101. [2022-07-22 12:31:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98101 states, 98100 states have (on average 1.1901936799184505) internal successors, (116758), 98100 states have internal predecessors, (116758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98101 states to 98101 states and 116758 transitions. [2022-07-22 12:31:23,770 INFO L78 Accepts]: Start accepts. Automaton has 98101 states and 116758 transitions. Word has length 322 [2022-07-22 12:31:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:23,771 INFO L495 AbstractCegarLoop]: Abstraction has 98101 states and 116758 transitions. [2022-07-22 12:31:23,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 98101 states and 116758 transitions. [2022-07-22 12:31:23,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2022-07-22 12:31:23,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:23,776 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 12:31:23,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 12:31:23,776 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:23,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:23,777 INFO L85 PathProgramCache]: Analyzing trace with hash 821010150, now seen corresponding path program 1 times [2022-07-22 12:31:23,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:23,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140497907] [2022-07-22 12:31:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:23,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 217 proven. 110 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 12:31:24,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:24,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140497907] [2022-07-22 12:31:24,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140497907] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:31:24,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434697383] [2022-07-22 12:31:24,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:24,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:31:24,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:31:24,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:31:24,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 12:31:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:24,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 12:31:24,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:31:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-22 12:31:24,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:31:24,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434697383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:24,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:31:24,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-22 12:31:24,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671080875] [2022-07-22 12:31:24,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:24,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:24,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:24,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:24,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 12:31:24,592 INFO L87 Difference]: Start difference. First operand 98101 states and 116758 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:27,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:27,747 INFO L93 Difference]: Finished difference Result 194624 states and 231569 transitions. [2022-07-22 12:31:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:27,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 351 [2022-07-22 12:31:27,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:27,856 INFO L225 Difference]: With dead ends: 194624 [2022-07-22 12:31:27,856 INFO L226 Difference]: Without dead ends: 97312 [2022-07-22 12:31:27,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 12:31:27,901 INFO L413 NwaCegarLoop]: 1366 mSDtfsCounter, 1138 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:27,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1448 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:31:27,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97312 states. [2022-07-22 12:31:28,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97312 to 97311. [2022-07-22 12:31:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97311 states, 97310 states have (on average 1.1398931250642277) internal successors, (110923), 97310 states have internal predecessors, (110923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97311 states to 97311 states and 110923 transitions. [2022-07-22 12:31:29,135 INFO L78 Accepts]: Start accepts. Automaton has 97311 states and 110923 transitions. Word has length 351 [2022-07-22 12:31:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:29,136 INFO L495 AbstractCegarLoop]: Abstraction has 97311 states and 110923 transitions. [2022-07-22 12:31:29,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 97311 states and 110923 transitions. [2022-07-22 12:31:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-07-22 12:31:29,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:29,141 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-22 12:31:29,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 12:31:29,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:31:29,366 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:29,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:29,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1611430083, now seen corresponding path program 1 times [2022-07-22 12:31:29,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:29,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426531336] [2022-07-22 12:31:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:29,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-07-22 12:31:29,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:29,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426531336] [2022-07-22 12:31:29,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426531336] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:29,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:29,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:29,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125547430] [2022-07-22 12:31:29,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:29,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:29,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:29,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:29,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:29,708 INFO L87 Difference]: Start difference. First operand 97311 states and 110923 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:33,283 INFO L93 Difference]: Finished difference Result 226913 states and 257590 transitions. [2022-07-22 12:31:33,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:33,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 368 [2022-07-22 12:31:33,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:33,482 INFO L225 Difference]: With dead ends: 226913 [2022-07-22 12:31:33,482 INFO L226 Difference]: Without dead ends: 130391 [2022-07-22 12:31:33,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:33,519 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 1069 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:33,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1350 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 12:31:33,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130391 states. [2022-07-22 12:31:34,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130391 to 123277. [2022-07-22 12:31:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123277 states, 123276 states have (on average 1.120493851195691) internal successors, (138130), 123276 states have internal predecessors, (138130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123277 states to 123277 states and 138130 transitions. [2022-07-22 12:31:35,036 INFO L78 Accepts]: Start accepts. Automaton has 123277 states and 138130 transitions. Word has length 368 [2022-07-22 12:31:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:35,036 INFO L495 AbstractCegarLoop]: Abstraction has 123277 states and 138130 transitions. [2022-07-22 12:31:35,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand 123277 states and 138130 transitions. [2022-07-22 12:31:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-07-22 12:31:35,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:35,052 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-07-22 12:31:35,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 12:31:35,053 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash -173582310, now seen corresponding path program 1 times [2022-07-22 12:31:35,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:35,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508720708] [2022-07-22 12:31:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-07-22 12:31:35,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:35,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508720708] [2022-07-22 12:31:35,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508720708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:35,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:35,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:35,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729322548] [2022-07-22 12:31:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:35,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:35,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:35,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:35,244 INFO L87 Difference]: Start difference. First operand 123277 states and 138130 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:39,178 INFO L93 Difference]: Finished difference Result 274901 states and 310706 transitions. [2022-07-22 12:31:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:39,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 470 [2022-07-22 12:31:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:39,372 INFO L225 Difference]: With dead ends: 274901 [2022-07-22 12:31:39,373 INFO L226 Difference]: Without dead ends: 152413 [2022-07-22 12:31:39,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:39,442 INFO L413 NwaCegarLoop]: 1784 mSDtfsCounter, 739 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:39,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 1938 Invalid, 3171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-22 12:31:39,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152413 states. [2022-07-22 12:31:41,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152413 to 152394. [2022-07-22 12:31:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152394 states, 152393 states have (on average 1.1043420629556475) internal successors, (168294), 152393 states have internal predecessors, (168294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152394 states to 152394 states and 168294 transitions. [2022-07-22 12:31:41,262 INFO L78 Accepts]: Start accepts. Automaton has 152394 states and 168294 transitions. Word has length 470 [2022-07-22 12:31:41,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:41,263 INFO L495 AbstractCegarLoop]: Abstraction has 152394 states and 168294 transitions. [2022-07-22 12:31:41,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 152394 states and 168294 transitions. [2022-07-22 12:31:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-07-22 12:31:41,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:41,606 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:31:41,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 12:31:41,606 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash 826766630, now seen corresponding path program 1 times [2022-07-22 12:31:41,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:41,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375840836] [2022-07-22 12:31:41,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:41,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-07-22 12:31:41,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:41,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375840836] [2022-07-22 12:31:41,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375840836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:41,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:41,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:41,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262603870] [2022-07-22 12:31:41,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:41,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:41,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:41,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:41,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:41,905 INFO L87 Difference]: Start difference. First operand 152394 states and 168294 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:45,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:45,828 INFO L93 Difference]: Finished difference Result 333127 states and 370830 transitions. [2022-07-22 12:31:45,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:45,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 479 [2022-07-22 12:31:45,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:46,076 INFO L225 Difference]: With dead ends: 333127 [2022-07-22 12:31:46,076 INFO L226 Difference]: Without dead ends: 181522 [2022-07-22 12:31:46,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:46,159 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 924 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:46,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 782 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 12:31:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181522 states. [2022-07-22 12:31:48,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181522 to 181501. [2022-07-22 12:31:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181501 states, 181500 states have (on average 1.106793388429752) internal successors, (200883), 181500 states have internal predecessors, (200883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181501 states to 181501 states and 200883 transitions. [2022-07-22 12:31:48,722 INFO L78 Accepts]: Start accepts. Automaton has 181501 states and 200883 transitions. Word has length 479 [2022-07-22 12:31:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:48,722 INFO L495 AbstractCegarLoop]: Abstraction has 181501 states and 200883 transitions. [2022-07-22 12:31:48,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 181501 states and 200883 transitions. [2022-07-22 12:31:48,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2022-07-22 12:31:48,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:48,735 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-22 12:31:48,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 12:31:48,736 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash -14888204, now seen corresponding path program 1 times [2022-07-22 12:31:48,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:48,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571719838] [2022-07-22 12:31:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:48,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-22 12:31:48,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:48,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571719838] [2022-07-22 12:31:48,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571719838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:48,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:31:48,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:31:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318085306] [2022-07-22 12:31:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:48,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:48,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:48,957 INFO L87 Difference]: Start difference. First operand 181501 states and 200883 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:31:52,780 INFO L93 Difference]: Finished difference Result 352727 states and 392352 transitions. [2022-07-22 12:31:52,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:31:52,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 496 [2022-07-22 12:31:52,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:31:53,038 INFO L225 Difference]: With dead ends: 352727 [2022-07-22 12:31:53,038 INFO L226 Difference]: Without dead ends: 192485 [2022-07-22 12:31:53,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:31:53,131 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1186 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 12:31:53,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 386 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 12:31:53,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192485 states. [2022-07-22 12:31:55,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192485 to 192485. [2022-07-22 12:31:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192485 states, 192484 states have (on average 1.0990783649550093) internal successors, (211555), 192484 states have internal predecessors, (211555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:55,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192485 states to 192485 states and 211555 transitions. [2022-07-22 12:31:55,697 INFO L78 Accepts]: Start accepts. Automaton has 192485 states and 211555 transitions. Word has length 496 [2022-07-22 12:31:55,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:31:55,698 INFO L495 AbstractCegarLoop]: Abstraction has 192485 states and 211555 transitions. [2022-07-22 12:31:55,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:31:55,698 INFO L276 IsEmpty]: Start isEmpty. Operand 192485 states and 211555 transitions. [2022-07-22 12:31:55,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2022-07-22 12:31:55,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:31:55,721 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-22 12:31:55,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 12:31:55,721 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:31:55,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:31:55,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1589919666, now seen corresponding path program 1 times [2022-07-22 12:31:55,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:31:55,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807520027] [2022-07-22 12:31:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:55,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:31:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 316 proven. 110 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 12:31:56,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:31:56,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807520027] [2022-07-22 12:31:56,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807520027] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 12:31:56,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606857275] [2022-07-22 12:31:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:31:56,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 12:31:56,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:31:56,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 12:31:56,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 12:31:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:31:56,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 12:31:56,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 12:31:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-22 12:31:57,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 12:31:57,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606857275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:31:57,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 12:31:57,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-07-22 12:31:57,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956267931] [2022-07-22 12:31:57,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:31:57,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:31:57,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:31:57,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:31:57,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 12:31:57,588 INFO L87 Difference]: Start difference. First operand 192485 states and 211555 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:32:01,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:32:01,275 INFO L93 Difference]: Finished difference Result 370809 states and 408579 transitions. [2022-07-22 12:32:01,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:32:01,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 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 541 [2022-07-22 12:32:01,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:32:01,550 INFO L225 Difference]: With dead ends: 370809 [2022-07-22 12:32:01,550 INFO L226 Difference]: Without dead ends: 199583 [2022-07-22 12:32:01,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 12:32:01,639 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 547 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:32:01,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1133 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 12:32:01,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199583 states. [2022-07-22 12:32:03,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199583 to 199572. [2022-07-22 12:32:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199572 states, 199571 states have (on average 1.0951340625642003) internal successors, (218557), 199571 states have internal predecessors, (218557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:32:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199572 states to 199572 states and 218557 transitions. [2022-07-22 12:32:04,086 INFO L78 Accepts]: Start accepts. Automaton has 199572 states and 218557 transitions. Word has length 541 [2022-07-22 12:32:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 12:32:04,086 INFO L495 AbstractCegarLoop]: Abstraction has 199572 states and 218557 transitions. [2022-07-22 12:32:04,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:32:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 199572 states and 218557 transitions. [2022-07-22 12:32:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2022-07-22 12:32:04,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 12:32:04,102 INFO L195 NwaCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 12:32:04,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 12:32:04,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 12:32:04,303 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 12:32:04,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:32:04,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1371222807, now seen corresponding path program 1 times [2022-07-22 12:32:04,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:32:04,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089856183] [2022-07-22 12:32:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:32:04,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:32:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 12:32:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-07-22 12:32:04,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 12:32:04,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089856183] [2022-07-22 12:32:04,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089856183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 12:32:04,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 12:32:04,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 12:32:04,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9876437] [2022-07-22 12:32:04,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 12:32:04,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 12:32:04,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 12:32:04,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 12:32:04,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:32:04,502 INFO L87 Difference]: Start difference. First operand 199572 states and 218557 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 12:32:09,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 12:32:09,594 INFO L93 Difference]: Finished difference Result 433797 states and 477050 transitions. [2022-07-22 12:32:09,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 12:32:09,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 560 [2022-07-22 12:32:09,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 12:32:10,032 INFO L225 Difference]: With dead ends: 433797 [2022-07-22 12:32:10,032 INFO L226 Difference]: Without dead ends: 255484 [2022-07-22 12:32:10,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 12:32:10,155 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 945 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2847 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 12:32:10,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 679 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2847 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-22 12:32:10,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255484 states.