./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.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 8c74c5a9435f0a63b4462639dc1dbde4e8823a1089df2fad63ca5f5dce7dc603 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:59:15,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:59:15,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:59:15,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:59:15,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:59:15,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:59:15,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:59:15,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:59:15,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:59:15,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:59:15,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:59:15,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:59:15,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:59:15,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:59:15,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:59:15,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:59:15,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:59:15,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:59:15,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:59:15,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:59:15,077 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:59:15,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:59:15,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:59:15,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:59:15,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:59:15,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:59:15,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:59:15,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:59:15,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:59:15,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:59:15,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:59:15,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:59:15,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:59:15,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:59:15,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:59:15,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:59:15,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:59:15,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:59:15,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:59:15,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:59:15,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:59:15,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:59:15,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:59:15,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:59:15,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:59:15,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:59:15,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:59:15,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:59:15,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:59:15,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:59:15,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:59:15,125 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:59:15,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:59:15,126 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:59:15,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:59:15,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:59:15,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:59:15,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:59:15,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:59:15,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:59:15,127 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:59:15,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:59:15,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:59:15,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:59:15,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:59:15,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:59:15,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:59:15,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:59:15,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:59:15,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:59:15,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:59:15,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:59:15,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:59:15,129 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:59:15,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:59:15,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:59:15,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c74c5a9435f0a63b4462639dc1dbde4e8823a1089df2fad63ca5f5dce7dc603 [2022-07-21 07:59:15,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:59:15,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:59:15,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:59:15,387 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:59:15,387 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:59:15,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c [2022-07-21 07:59:15,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a7ea6cde/e86618b41316416ab91f2b3c9f683045/FLAGa3ee73f01 [2022-07-21 07:59:16,045 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:59:16,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c [2022-07-21 07:59:16,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a7ea6cde/e86618b41316416ab91f2b3c9f683045/FLAGa3ee73f01 [2022-07-21 07:59:16,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a7ea6cde/e86618b41316416ab91f2b3c9f683045 [2022-07-21 07:59:16,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:59:16,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:59:16,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:59:16,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:59:16,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:59:16,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:59:16" (1/1) ... [2022-07-21 07:59:16,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245b9f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:16, skipping insertion in model container [2022-07-21 07:59:16,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:59:16" (1/1) ... [2022-07-21 07:59:16,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:59:16,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:59:16,826 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c[26860,26873] [2022-07-21 07:59:16,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c[28735,28748] [2022-07-21 07:59:17,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:59:17,319 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:59:17,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c[26860,26873] [2022-07-21 07:59:17,360 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c[28735,28748] [2022-07-21 07:59:17,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:59:17,708 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:59:17,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17 WrapperNode [2022-07-21 07:59:17,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:59:17,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:59:17,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:59:17,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:59:17,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (1/1) ... [2022-07-21 07:59:17,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (1/1) ... [2022-07-21 07:59:18,162 INFO L137 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5281 [2022-07-21 07:59:18,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:59:18,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:59:18,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:59:18,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:59:18,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (1/1) ... [2022-07-21 07:59:18,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (1/1) ... [2022-07-21 07:59:18,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (1/1) ... [2022-07-21 07:59:18,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (1/1) ... [2022-07-21 07:59:18,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (1/1) ... [2022-07-21 07:59:18,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (1/1) ... [2022-07-21 07:59:18,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (1/1) ... [2022-07-21 07:59:18,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:59:18,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:59:18,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:59:18,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:59:18,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (1/1) ... [2022-07-21 07:59:18,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:59:18,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:59:18,608 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) [2022-07-21 07:59:18,625 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 [2022-07-21 07:59:18,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:59:18,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:59:18,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:59:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:59:18,759 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:59:18,760 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:59:21,524 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:59:21,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:59:21,535 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 07:59:21,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:59:21 BoogieIcfgContainer [2022-07-21 07:59:21,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:59:21,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:59:21,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:59:21,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:59:21,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:59:16" (1/3) ... [2022-07-21 07:59:21,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758b00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:59:21, skipping insertion in model container [2022-07-21 07:59:21,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:59:17" (2/3) ... [2022-07-21 07:59:21,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758b00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:59:21, skipping insertion in model container [2022-07-21 07:59:21,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:59:21" (3/3) ... [2022-07-21 07:59:21,543 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label00.c [2022-07-21 07:59:21,553 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:59:21,553 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:59:21,596 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:59:21,601 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@5e8df40c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3b1c1044 [2022-07-21 07:59:21,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:59:21,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:21,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 07:59:21,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:21,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:21,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:21,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash -242791467, now seen corresponding path program 1 times [2022-07-21 07:59:21,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:21,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312526436] [2022-07-21 07:59:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:21,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:21,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:21,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312526436] [2022-07-21 07:59:21,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312526436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:21,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:21,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:59:21,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736197957] [2022-07-21 07:59:21,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:21,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:21,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:21,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:21,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:21,804 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:24,730 INFO L93 Difference]: Finished difference Result 2614 states and 5014 transitions. [2022-07-21 07:59:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:24,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-07-21 07:59:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:24,753 INFO L225 Difference]: With dead ends: 2614 [2022-07-21 07:59:24,754 INFO L226 Difference]: Without dead ends: 1648 [2022-07-21 07:59:24,759 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 [2022-07-21 07:59:24,762 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1134 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:24,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 410 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 07:59:24,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-07-21 07:59:24,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-07-21 07:59:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.839003645200486) internal successors, (3027), 1647 states have internal predecessors, (3027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 3027 transitions. [2022-07-21 07:59:24,887 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 3027 transitions. Word has length 16 [2022-07-21 07:59:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:24,887 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 3027 transitions. [2022-07-21 07:59:24,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 3027 transitions. [2022-07-21 07:59:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 07:59:24,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:24,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:24,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:59:24,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:24,890 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2022-07-21 07:59:24,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:24,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407775900] [2022-07-21 07:59:24,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:24,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:24,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407775900] [2022-07-21 07:59:24,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407775900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:24,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:24,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:59:24,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486376945] [2022-07-21 07:59:24,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:24,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:59:24,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:24,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:59:24,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:59:24,960 INFO L87 Difference]: Start difference. First operand 1648 states and 3027 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:25,031 INFO L93 Difference]: Finished difference Result 1728 states and 3152 transitions. [2022-07-21 07:59:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 07:59:25,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-07-21 07:59:25,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:25,037 INFO L225 Difference]: With dead ends: 1728 [2022-07-21 07:59:25,038 INFO L226 Difference]: Without dead ends: 1648 [2022-07-21 07:59:25,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:59:25,039 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:25,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-07-21 07:59:25,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-07-21 07:59:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.801944106925881) internal successors, (2966), 1647 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2966 transitions. [2022-07-21 07:59:25,072 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2966 transitions. Word has length 46 [2022-07-21 07:59:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:25,073 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2966 transitions. [2022-07-21 07:59:25,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2966 transitions. [2022-07-21 07:59:25,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 07:59:25,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:25,075 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:25,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:59:25,076 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:25,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1579898040, now seen corresponding path program 1 times [2022-07-21 07:59:25,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:25,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194801488] [2022-07-21 07:59:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:25,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:25,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194801488] [2022-07-21 07:59:25,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194801488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:25,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:25,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:25,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956128388] [2022-07-21 07:59:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:25,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 07:59:25,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:25,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 07:59:25,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 07:59:25,184 INFO L87 Difference]: Start difference. First operand 1648 states and 2966 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:29,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:29,972 INFO L93 Difference]: Finished difference Result 5405 states and 9856 transitions. [2022-07-21 07:59:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 07:59:29,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-07-21 07:59:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:29,988 INFO L225 Difference]: With dead ends: 5405 [2022-07-21 07:59:29,988 INFO L226 Difference]: Without dead ends: 3901 [2022-07-21 07:59:29,990 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 [2022-07-21 07:59:29,991 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 2546 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 6307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:29,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2546 Valid, 899 Invalid, 6307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-21 07:59:29,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3901 states. [2022-07-21 07:59:30,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3901 to 3901. [2022-07-21 07:59:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3901 states, 3899 states have (on average 1.5632213388048217) internal successors, (6095), 3900 states have internal predecessors, (6095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3901 states to 3901 states and 6095 transitions. [2022-07-21 07:59:30,051 INFO L78 Accepts]: Start accepts. Automaton has 3901 states and 6095 transitions. Word has length 85 [2022-07-21 07:59:30,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:30,052 INFO L495 AbstractCegarLoop]: Abstraction has 3901 states and 6095 transitions. [2022-07-21 07:59:30,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:30,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3901 states and 6095 transitions. [2022-07-21 07:59:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 07:59:30,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:30,058 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:59:30,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 07:59:30,058 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:30,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:30,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1817535011, now seen corresponding path program 1 times [2022-07-21 07:59:30,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:30,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646616023] [2022-07-21 07:59:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:30,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:30,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646616023] [2022-07-21 07:59:30,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646616023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:30,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:30,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:30,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964240069] [2022-07-21 07:59:30,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:30,164 INFO L87 Difference]: Start difference. First operand 3901 states and 6095 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:32,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:32,505 INFO L93 Difference]: Finished difference Result 10662 states and 17147 transitions. [2022-07-21 07:59:32,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:32,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-07-21 07:59:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:32,530 INFO L225 Difference]: With dead ends: 10662 [2022-07-21 07:59:32,530 INFO L226 Difference]: Without dead ends: 6905 [2022-07-21 07:59:32,537 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 [2022-07-21 07:59:32,545 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 775 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:32,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1354 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 07:59:32,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6905 states. [2022-07-21 07:59:32,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6905 to 6905. [2022-07-21 07:59:32,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6905 states, 6903 states have (on average 1.5319426336375488) internal successors, (10575), 6904 states have internal predecessors, (10575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 10575 transitions. [2022-07-21 07:59:32,662 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 10575 transitions. Word has length 87 [2022-07-21 07:59:32,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:32,664 INFO L495 AbstractCegarLoop]: Abstraction has 6905 states and 10575 transitions. [2022-07-21 07:59:32,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 10575 transitions. [2022-07-21 07:59:32,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:32,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:32,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:32,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 07:59:32,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2022-07-21 07:59:32,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:32,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386163145] [2022-07-21 07:59:32,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:32,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:32,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:32,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386163145] [2022-07-21 07:59:32,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386163145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:32,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:32,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:32,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378295164] [2022-07-21 07:59:32,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:32,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:32,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:32,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:32,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:32,776 INFO L87 Difference]: Start difference. First operand 6905 states and 10575 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:32,813 INFO L93 Difference]: Finished difference Result 7051 states and 10807 transitions. [2022-07-21 07:59:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-21 07:59:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:32,907 INFO L225 Difference]: With dead ends: 7051 [2022-07-21 07:59:32,909 INFO L226 Difference]: Without dead ends: 6975 [2022-07-21 07:59:32,911 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 [2022-07-21 07:59:32,911 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:32,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6975 states. [2022-07-21 07:59:32,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6975 to 6973. [2022-07-21 07:59:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6973 states, 6971 states have (on average 1.53263520298379) internal successors, (10684), 6972 states have internal predecessors, (10684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6973 states to 6973 states and 10684 transitions. [2022-07-21 07:59:33,011 INFO L78 Accepts]: Start accepts. Automaton has 6973 states and 10684 transitions. Word has length 106 [2022-07-21 07:59:33,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:33,014 INFO L495 AbstractCegarLoop]: Abstraction has 6973 states and 10684 transitions. [2022-07-21 07:59:33,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6973 states and 10684 transitions. [2022-07-21 07:59:33,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:33,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:33,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:33,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 07:59:33,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:33,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2022-07-21 07:59:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:33,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455803820] [2022-07-21 07:59:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:33,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:33,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455803820] [2022-07-21 07:59:33,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455803820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:33,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:33,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:33,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071591769] [2022-07-21 07:59:33,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:33,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:33,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:33,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:33,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:33,094 INFO L87 Difference]: Start difference. First operand 6973 states and 10684 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:33,131 INFO L93 Difference]: Finished difference Result 7249 states and 11124 transitions. [2022-07-21 07:59:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:33,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-21 07:59:33,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:33,151 INFO L225 Difference]: With dead ends: 7249 [2022-07-21 07:59:33,151 INFO L226 Difference]: Without dead ends: 7105 [2022-07-21 07:59:33,154 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 [2022-07-21 07:59:33,155 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:33,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7105 states. [2022-07-21 07:59:33,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7105 to 7103. [2022-07-21 07:59:33,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7103 states, 7101 states have (on average 1.5337276439938037) internal successors, (10891), 7102 states have internal predecessors, (10891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 10891 transitions. [2022-07-21 07:59:33,257 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 10891 transitions. Word has length 106 [2022-07-21 07:59:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:33,257 INFO L495 AbstractCegarLoop]: Abstraction has 7103 states and 10891 transitions. [2022-07-21 07:59:33,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 10891 transitions. [2022-07-21 07:59:33,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:33,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:33,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:33,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 07:59:33,259 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:33,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2022-07-21 07:59:33,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:33,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792457298] [2022-07-21 07:59:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:33,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:33,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:33,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792457298] [2022-07-21 07:59:33,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792457298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:33,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:33,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:33,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237438495] [2022-07-21 07:59:33,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:33,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:33,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:33,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:33,299 INFO L87 Difference]: Start difference. First operand 7103 states and 10891 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:33,341 INFO L93 Difference]: Finished difference Result 7627 states and 11725 transitions. [2022-07-21 07:59:33,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:33,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-21 07:59:33,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:33,355 INFO L225 Difference]: With dead ends: 7627 [2022-07-21 07:59:33,355 INFO L226 Difference]: Without dead ends: 7353 [2022-07-21 07:59:33,358 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 [2022-07-21 07:59:33,359 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:33,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7353 states. [2022-07-21 07:59:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7353 to 7351. [2022-07-21 07:59:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 7349 states have (on average 1.535310926656688) internal successors, (11283), 7350 states have internal predecessors, (11283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 11283 transitions. [2022-07-21 07:59:33,464 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 11283 transitions. Word has length 106 [2022-07-21 07:59:33,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:33,464 INFO L495 AbstractCegarLoop]: Abstraction has 7351 states and 11283 transitions. [2022-07-21 07:59:33,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 11283 transitions. [2022-07-21 07:59:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:33,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:33,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:33,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 07:59:33,468 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:33,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2022-07-21 07:59:33,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:33,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940852511] [2022-07-21 07:59:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:33,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:33,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:33,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940852511] [2022-07-21 07:59:33,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940852511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:33,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:33,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:33,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797962345] [2022-07-21 07:59:33,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:33,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:33,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:33,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:33,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:33,528 INFO L87 Difference]: Start difference. First operand 7351 states and 11283 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:33,580 INFO L93 Difference]: Finished difference Result 8347 states and 12861 transitions. [2022-07-21 07:59:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:33,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-21 07:59:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:33,594 INFO L225 Difference]: With dead ends: 8347 [2022-07-21 07:59:33,595 INFO L226 Difference]: Without dead ends: 7825 [2022-07-21 07:59:33,598 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 [2022-07-21 07:59:33,599 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:33,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7825 states. [2022-07-21 07:59:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7825 to 7823. [2022-07-21 07:59:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 7821 states have (on average 1.5372714486638537) internal successors, (12023), 7822 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 12023 transitions. [2022-07-21 07:59:33,717 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 12023 transitions. Word has length 106 [2022-07-21 07:59:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:33,717 INFO L495 AbstractCegarLoop]: Abstraction has 7823 states and 12023 transitions. [2022-07-21 07:59:33,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 12023 transitions. [2022-07-21 07:59:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 07:59:33,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:33,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:33,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 07:59:33,719 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:33,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2022-07-21 07:59:33,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:33,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328131527] [2022-07-21 07:59:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:33,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:33,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:33,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328131527] [2022-07-21 07:59:33,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328131527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:33,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:33,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 07:59:33,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853426331] [2022-07-21 07:59:33,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:33,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 07:59:33,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:33,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 07:59:33,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 07:59:33,822 INFO L87 Difference]: Start difference. First operand 7823 states and 12023 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:34,857 INFO L93 Difference]: Finished difference Result 23727 states and 37127 transitions. [2022-07-21 07:59:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 07:59:34,857 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-21 07:59:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:34,898 INFO L225 Difference]: With dead ends: 23727 [2022-07-21 07:59:34,898 INFO L226 Difference]: Without dead ends: 22733 [2022-07-21 07:59:34,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-07-21 07:59:34,909 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:34,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:59:34,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22733 states. [2022-07-21 07:59:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22733 to 8815. [2022-07-21 07:59:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8815 states, 8813 states have (on average 1.5385226370135028) internal successors, (13559), 8814 states have internal predecessors, (13559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:35,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8815 states to 8815 states and 13559 transitions. [2022-07-21 07:59:35,205 INFO L78 Accepts]: Start accepts. Automaton has 8815 states and 13559 transitions. Word has length 106 [2022-07-21 07:59:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:35,205 INFO L495 AbstractCegarLoop]: Abstraction has 8815 states and 13559 transitions. [2022-07-21 07:59:35,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:35,206 INFO L276 IsEmpty]: Start isEmpty. Operand 8815 states and 13559 transitions. [2022-07-21 07:59:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 07:59:35,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:35,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:35,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 07:59:35,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:35,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2022-07-21 07:59:35,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:35,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703508433] [2022-07-21 07:59:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:35,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:35,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:35,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703508433] [2022-07-21 07:59:35,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703508433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:35,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:35,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:35,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174839352] [2022-07-21 07:59:35,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:35,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:35,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:35,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:35,267 INFO L87 Difference]: Start difference. First operand 8815 states and 13559 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:35,544 INFO L93 Difference]: Finished difference Result 11757 states and 18155 transitions. [2022-07-21 07:59:35,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:35,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-21 07:59:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:35,560 INFO L225 Difference]: With dead ends: 11757 [2022-07-21 07:59:35,560 INFO L226 Difference]: Without dead ends: 9771 [2022-07-21 07:59:35,565 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 [2022-07-21 07:59:35,566 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:35,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states. [2022-07-21 07:59:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 9769. [2022-07-21 07:59:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9769 states, 9767 states have (on average 1.5383434012491042) internal successors, (15025), 9768 states have internal predecessors, (15025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 15025 transitions. [2022-07-21 07:59:35,814 INFO L78 Accepts]: Start accepts. Automaton has 9769 states and 15025 transitions. Word has length 108 [2022-07-21 07:59:35,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:35,814 INFO L495 AbstractCegarLoop]: Abstraction has 9769 states and 15025 transitions. [2022-07-21 07:59:35,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:35,815 INFO L276 IsEmpty]: Start isEmpty. Operand 9769 states and 15025 transitions. [2022-07-21 07:59:35,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 07:59:35,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:35,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:35,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 07:59:35,816 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:35,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:35,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2022-07-21 07:59:35,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:35,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28602634] [2022-07-21 07:59:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:35,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:36,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:36,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28602634] [2022-07-21 07:59:36,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28602634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:36,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:36,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 07:59:36,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138763129] [2022-07-21 07:59:36,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:36,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 07:59:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:36,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 07:59:36,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 07:59:36,010 INFO L87 Difference]: Start difference. First operand 9769 states and 15025 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:36,485 INFO L93 Difference]: Finished difference Result 12709 states and 19595 transitions. [2022-07-21 07:59:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 07:59:36,486 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-21 07:59:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:36,502 INFO L225 Difference]: With dead ends: 12709 [2022-07-21 07:59:36,502 INFO L226 Difference]: Without dead ends: 9771 [2022-07-21 07:59:36,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-21 07:59:36,509 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 3602 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3602 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:36,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3602 Valid, 2487 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:59:36,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9771 states. [2022-07-21 07:59:36,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9771 to 9769. [2022-07-21 07:59:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9769 states, 9767 states have (on average 1.53588614723047) internal successors, (15001), 9768 states have internal predecessors, (15001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9769 states to 9769 states and 15001 transitions. [2022-07-21 07:59:36,845 INFO L78 Accepts]: Start accepts. Automaton has 9769 states and 15001 transitions. Word has length 108 [2022-07-21 07:59:36,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:36,846 INFO L495 AbstractCegarLoop]: Abstraction has 9769 states and 15001 transitions. [2022-07-21 07:59:36,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:36,846 INFO L276 IsEmpty]: Start isEmpty. Operand 9769 states and 15001 transitions. [2022-07-21 07:59:36,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 07:59:36,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:36,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:36,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 07:59:36,848 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:36,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2022-07-21 07:59:36,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:36,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721659742] [2022-07-21 07:59:36,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:36,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:36,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:36,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721659742] [2022-07-21 07:59:36,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721659742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:36,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:36,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:36,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334240362] [2022-07-21 07:59:36,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:36,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:36,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:36,888 INFO L87 Difference]: Start difference. First operand 9769 states and 15001 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:37,218 INFO L93 Difference]: Finished difference Result 15357 states and 23611 transitions. [2022-07-21 07:59:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:37,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-21 07:59:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:37,241 INFO L225 Difference]: With dead ends: 15357 [2022-07-21 07:59:37,242 INFO L226 Difference]: Without dead ends: 12419 [2022-07-21 07:59:37,249 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 [2022-07-21 07:59:37,250 INFO L413 NwaCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:37,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12419 states. [2022-07-21 07:59:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12419 to 12417. [2022-07-21 07:59:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12417 states, 12415 states have (on average 1.5317760773258156) internal successors, (19017), 12416 states have internal predecessors, (19017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12417 states to 12417 states and 19017 transitions. [2022-07-21 07:59:37,730 INFO L78 Accepts]: Start accepts. Automaton has 12417 states and 19017 transitions. Word has length 108 [2022-07-21 07:59:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:37,731 INFO L495 AbstractCegarLoop]: Abstraction has 12417 states and 19017 transitions. [2022-07-21 07:59:37,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 12417 states and 19017 transitions. [2022-07-21 07:59:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 07:59:37,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:37,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:37,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 07:59:37,733 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:37,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:37,733 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2022-07-21 07:59:37,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:37,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892420186] [2022-07-21 07:59:37,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:37,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:37,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:37,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892420186] [2022-07-21 07:59:37,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892420186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:37,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:37,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:37,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529802858] [2022-07-21 07:59:37,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:37,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:37,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:37,778 INFO L87 Difference]: Start difference. First operand 12417 states and 19017 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:38,393 INFO L93 Difference]: Finished difference Result 23013 states and 35179 transitions. [2022-07-21 07:59:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:38,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-21 07:59:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:38,420 INFO L225 Difference]: With dead ends: 23013 [2022-07-21 07:59:38,420 INFO L226 Difference]: Without dead ends: 17427 [2022-07-21 07:59:38,431 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 [2022-07-21 07:59:38,432 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:38,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:38,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2022-07-21 07:59:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 17425. [2022-07-21 07:59:39,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17425 states, 17423 states have (on average 1.522183320897664) internal successors, (26521), 17424 states have internal predecessors, (26521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:39,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17425 states to 17425 states and 26521 transitions. [2022-07-21 07:59:39,369 INFO L78 Accepts]: Start accepts. Automaton has 17425 states and 26521 transitions. Word has length 108 [2022-07-21 07:59:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:39,369 INFO L495 AbstractCegarLoop]: Abstraction has 17425 states and 26521 transitions. [2022-07-21 07:59:39,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:39,369 INFO L276 IsEmpty]: Start isEmpty. Operand 17425 states and 26521 transitions. [2022-07-21 07:59:39,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 07:59:39,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:39,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:39,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 07:59:39,371 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:39,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:39,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2022-07-21 07:59:39,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:39,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296097332] [2022-07-21 07:59:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:39,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:39,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:39,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:39,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296097332] [2022-07-21 07:59:39,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296097332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:39,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:39,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:39,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972063773] [2022-07-21 07:59:39,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:39,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:39,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:39,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:39,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:39,406 INFO L87 Difference]: Start difference. First operand 17425 states and 26521 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:40,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:40,647 INFO L93 Difference]: Finished difference Result 37461 states and 56731 transitions. [2022-07-21 07:59:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:40,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-21 07:59:40,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:40,687 INFO L225 Difference]: With dead ends: 37461 [2022-07-21 07:59:40,687 INFO L226 Difference]: Without dead ends: 26867 [2022-07-21 07:59:40,704 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 [2022-07-21 07:59:40,705 INFO L413 NwaCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:40,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:40,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26867 states. [2022-07-21 07:59:42,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26867 to 26865. [2022-07-21 07:59:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26865 states, 26863 states have (on average 1.5066448274578417) internal successors, (40473), 26864 states have internal predecessors, (40473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26865 states to 26865 states and 40473 transitions. [2022-07-21 07:59:42,275 INFO L78 Accepts]: Start accepts. Automaton has 26865 states and 40473 transitions. Word has length 108 [2022-07-21 07:59:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:42,275 INFO L495 AbstractCegarLoop]: Abstraction has 26865 states and 40473 transitions. [2022-07-21 07:59:42,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 26865 states and 40473 transitions. [2022-07-21 07:59:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 07:59:42,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:42,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:42,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 07:59:42,277 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:42,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2022-07-21 07:59:42,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:42,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000851960] [2022-07-21 07:59:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:42,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:42,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:42,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000851960] [2022-07-21 07:59:42,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000851960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:42,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:42,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:59:42,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263992998] [2022-07-21 07:59:42,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:59:42,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:42,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:59:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:59:42,313 INFO L87 Difference]: Start difference. First operand 26865 states and 40473 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:44,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:44,951 INFO L93 Difference]: Finished difference Result 64629 states and 96667 transitions. [2022-07-21 07:59:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:59:44,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-21 07:59:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:45,012 INFO L225 Difference]: With dead ends: 64629 [2022-07-21 07:59:45,012 INFO L226 Difference]: Without dead ends: 44595 [2022-07-21 07:59:45,035 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 [2022-07-21 07:59:45,035 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:45,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:45,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44595 states. [2022-07-21 07:59:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44595 to 44593. [2022-07-21 07:59:47,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44593 states, 44591 states have (on average 1.4860622098629768) internal successors, (66265), 44592 states have internal predecessors, (66265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44593 states to 44593 states and 66265 transitions. [2022-07-21 07:59:47,987 INFO L78 Accepts]: Start accepts. Automaton has 44593 states and 66265 transitions. Word has length 108 [2022-07-21 07:59:47,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:47,987 INFO L495 AbstractCegarLoop]: Abstraction has 44593 states and 66265 transitions. [2022-07-21 07:59:47,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 44593 states and 66265 transitions. [2022-07-21 07:59:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-21 07:59:47,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:47,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:47,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 07:59:47,989 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:47,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2022-07-21 07:59:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:47,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297961993] [2022-07-21 07:59:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:48,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:59:48,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:48,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297961993] [2022-07-21 07:59:48,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297961993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:48,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:48,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:59:48,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226430897] [2022-07-21 07:59:48,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:48,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:59:48,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:48,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:59:48,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:59:48,050 INFO L87 Difference]: Start difference. First operand 44593 states and 66265 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:53,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:59:53,409 INFO L93 Difference]: Finished difference Result 76760 states and 112842 transitions. [2022-07-21 07:59:53,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:59:53,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-21 07:59:53,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:59:53,512 INFO L225 Difference]: With dead ends: 76760 [2022-07-21 07:59:53,512 INFO L226 Difference]: Without dead ends: 76758 [2022-07-21 07:59:53,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:59:53,536 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:59:53,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:59:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76758 states. [2022-07-21 07:59:57,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76758 to 46129. [2022-07-21 07:59:57,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46129 states, 46127 states have (on average 1.4671016974873718) internal successors, (67673), 46128 states have internal predecessors, (67673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46129 states to 46129 states and 67673 transitions. [2022-07-21 07:59:57,564 INFO L78 Accepts]: Start accepts. Automaton has 46129 states and 67673 transitions. Word has length 109 [2022-07-21 07:59:57,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:59:57,565 INFO L495 AbstractCegarLoop]: Abstraction has 46129 states and 67673 transitions. [2022-07-21 07:59:57,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:59:57,565 INFO L276 IsEmpty]: Start isEmpty. Operand 46129 states and 67673 transitions. [2022-07-21 07:59:57,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 07:59:57,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:59:57,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:59:57,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 07:59:57,581 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:59:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:59:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2022-07-21 07:59:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:59:57,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494204209] [2022-07-21 07:59:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:59:57,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:59:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:59:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 07:59:57,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:59:57,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494204209] [2022-07-21 07:59:57,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494204209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:59:57,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:59:57,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 07:59:57,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502071044] [2022-07-21 07:59:57,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:59:57,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 07:59:57,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:59:57,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 07:59:57,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 07:59:57,685 INFO L87 Difference]: Start difference. First operand 46129 states and 67673 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:00:23,007 INFO L93 Difference]: Finished difference Result 368067 states and 535970 transitions. [2022-07-21 08:00:23,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:00:23,008 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-07-21 08:00:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:00:23,749 INFO L225 Difference]: With dead ends: 368067 [2022-07-21 08:00:23,749 INFO L226 Difference]: Without dead ends: 328769 [2022-07-21 08:00:23,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:00:23,839 INFO L413 NwaCegarLoop]: 1738 mSDtfsCounter, 13254 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13254 SdHoareTripleChecker+Valid, 4427 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:00:23,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13254 Valid, 4427 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:00:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328769 states. [2022-07-21 08:00:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328769 to 85425. [2022-07-21 08:00:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85425 states, 85423 states have (on average 1.4575114430539784) internal successors, (124505), 85424 states have internal predecessors, (124505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85425 states to 85425 states and 124505 transitions. [2022-07-21 08:00:32,788 INFO L78 Accepts]: Start accepts. Automaton has 85425 states and 124505 transitions. Word has length 149 [2022-07-21 08:00:32,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:00:32,789 INFO L495 AbstractCegarLoop]: Abstraction has 85425 states and 124505 transitions. [2022-07-21 08:00:32,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:00:32,789 INFO L276 IsEmpty]: Start isEmpty. Operand 85425 states and 124505 transitions. [2022-07-21 08:00:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 08:00:32,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:00:32,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:00:32,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:00:32,825 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:00:32,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:00:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1273280147, now seen corresponding path program 1 times [2022-07-21 08:00:32,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:00:32,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481949293] [2022-07-21 08:00:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:00:32,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:00:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:00:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 08:00:32,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:00:32,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481949293] [2022-07-21 08:00:32,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481949293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:00:32,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:00:32,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:00:32,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850960931] [2022-07-21 08:00:32,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:00:32,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:00:32,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:00:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:00:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:00:32,930 INFO L87 Difference]: Start difference. First operand 85425 states and 124505 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)