./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label44.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label44.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 4590079a5f8946ec9488ef76281079c2cb860e2f88ad1b21eefdd23ad59a57f9 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 04:33:11,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 04:33:11,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 04:33:11,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 04:33:11,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 04:33:11,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 04:33:11,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 04:33:11,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 04:33:11,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 04:33:11,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 04:33:11,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 04:33:11,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 04:33:11,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 04:33:11,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 04:33:11,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 04:33:11,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 04:33:11,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 04:33:11,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 04:33:11,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 04:33:11,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 04:33:11,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 04:33:11,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 04:33:11,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 04:33:11,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 04:33:11,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 04:33:11,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 04:33:11,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 04:33:11,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 04:33:11,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 04:33:11,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 04:33:11,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 04:33:11,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 04:33:11,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 04:33:11,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 04:33:11,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 04:33:11,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 04:33:11,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 04:33:11,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 04:33:11,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 04:33:11,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 04:33:11,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 04:33:11,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 04:33:11,161 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 04:33:11,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 04:33:11,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 04:33:11,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 04:33:11,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 04:33:11,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 04:33:11,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 04:33:11,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 04:33:11,164 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 04:33:11,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 04:33:11,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 04:33:11,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 04:33:11,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 04:33:11,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 04:33:11,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 04:33:11,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 04:33:11,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 04:33:11,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 04:33:11,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 04:33:11,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 04:33:11,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 04:33:11,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 04:33:11,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 04:33:11,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 04:33:11,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:33:11,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 04:33:11,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 04:33:11,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 04:33:11,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 04:33:11,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 04:33:11,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 04:33:11,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 04:33:11,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 04:33:11,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 04:33:11,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4590079a5f8946ec9488ef76281079c2cb860e2f88ad1b21eefdd23ad59a57f9 [2021-12-17 04:33:11,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 04:33:11,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 04:33:11,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 04:33:11,387 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 04:33:11,388 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 04:33:11,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label44.c [2021-12-17 04:33:11,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547743f3c/e6b4c1ea23714267bb05db042bc2ccff/FLAG94b898b9f [2021-12-17 04:33:12,037 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 04:33:12,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label44.c [2021-12-17 04:33:12,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547743f3c/e6b4c1ea23714267bb05db042bc2ccff/FLAG94b898b9f [2021-12-17 04:33:12,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/547743f3c/e6b4c1ea23714267bb05db042bc2ccff [2021-12-17 04:33:12,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 04:33:12,465 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 04:33:12,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 04:33:12,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 04:33:12,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 04:33:12,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:33:12" (1/1) ... [2021-12-17 04:33:12,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a140738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:12, skipping insertion in model container [2021-12-17 04:33:12,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:33:12" (1/1) ... [2021-12-17 04:33:12,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 04:33:12,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 04:33:12,768 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label44.c[6250,6263] [2021-12-17 04:33:13,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:33:13,440 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 04:33:13,462 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label44.c[6250,6263] [2021-12-17 04:33:13,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:33:13,799 INFO L208 MainTranslator]: Completed translation [2021-12-17 04:33:13,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13 WrapperNode [2021-12-17 04:33:13,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 04:33:13,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 04:33:13,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 04:33:13,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 04:33:13,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (1/1) ... [2021-12-17 04:33:13,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (1/1) ... [2021-12-17 04:33:14,090 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2021-12-17 04:33:14,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 04:33:14,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 04:33:14,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 04:33:14,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 04:33:14,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (1/1) ... [2021-12-17 04:33:14,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (1/1) ... [2021-12-17 04:33:14,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (1/1) ... [2021-12-17 04:33:14,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (1/1) ... [2021-12-17 04:33:14,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (1/1) ... [2021-12-17 04:33:14,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (1/1) ... [2021-12-17 04:33:14,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (1/1) ... [2021-12-17 04:33:14,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 04:33:14,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 04:33:14,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 04:33:14,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 04:33:14,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (1/1) ... [2021-12-17 04:33:14,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:33:14,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:33:14,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 04:33:14,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 04:33:14,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 04:33:14,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 04:33:14,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 04:33:14,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 04:33:14,502 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 04:33:14,503 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 04:33:17,102 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 04:33:17,112 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 04:33:17,112 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 04:33:17,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:33:17 BoogieIcfgContainer [2021-12-17 04:33:17,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 04:33:17,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 04:33:17,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 04:33:17,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 04:33:17,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:33:12" (1/3) ... [2021-12-17 04:33:17,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f376c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:33:17, skipping insertion in model container [2021-12-17 04:33:17,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:33:13" (2/3) ... [2021-12-17 04:33:17,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f376c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:33:17, skipping insertion in model container [2021-12-17 04:33:17,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:33:17" (3/3) ... [2021-12-17 04:33:17,120 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label44.c [2021-12-17 04:33:17,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 04:33:17,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 04:33:17,154 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 04:33:17,159 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 04:33:17,159 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 04:33:17,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-17 04:33:17,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:17,184 INFO L514 BasicCegarLoop]: 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] [2021-12-17 04:33:17,185 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:17,188 INFO L85 PathProgramCache]: Analyzing trace with hash 761214138, now seen corresponding path program 1 times [2021-12-17 04:33:17,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:17,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891016612] [2021-12-17 04:33:17,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:17,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:33:17,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:17,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891016612] [2021-12-17 04:33:17,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891016612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:17,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:17,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:33:17,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624654825] [2021-12-17 04:33:17,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:17,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:33:17,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:17,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:33:17,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:17,366 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:20,085 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2021-12-17 04:33:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:33:20,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-12-17 04:33:20,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:20,102 INFO L225 Difference]: With dead ends: 2388 [2021-12-17 04:33:20,102 INFO L226 Difference]: Without dead ends: 1506 [2021-12-17 04:33:20,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:20,110 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 784 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:20,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 04:33:20,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-12-17 04:33:20,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2021-12-17 04:33:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2021-12-17 04:33:20,206 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 50 [2021-12-17 04:33:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:20,206 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2021-12-17 04:33:20,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2021-12-17 04:33:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-17 04:33:20,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:20,210 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-17 04:33:20,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 04:33:20,210 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:20,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1850963095, now seen corresponding path program 1 times [2021-12-17 04:33:20,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:20,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532494255] [2021-12-17 04:33:20,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:20,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:33:20,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:20,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532494255] [2021-12-17 04:33:20,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532494255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:20,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:20,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:33:20,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203631580] [2021-12-17 04:33:20,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:20,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:33:20,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:20,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:33:20,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:33:20,380 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:23,579 INFO L93 Difference]: Finished difference Result 4549 states and 7430 transitions. [2021-12-17 04:33:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:33:23,579 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-12-17 04:33:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:23,588 INFO L225 Difference]: With dead ends: 4549 [2021-12-17 04:33:23,588 INFO L226 Difference]: Without dead ends: 3008 [2021-12-17 04:33:23,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:33:23,592 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3732 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 4396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:23,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 656 Invalid, 4396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3732 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-17 04:33:23,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2021-12-17 04:33:23,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2021-12-17 04:33:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.341536415031593) internal successors, (4034), 3007 states have internal predecessors, (4034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4034 transitions. [2021-12-17 04:33:23,636 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4034 transitions. Word has length 121 [2021-12-17 04:33:23,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:23,636 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 4034 transitions. [2021-12-17 04:33:23,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4034 transitions. [2021-12-17 04:33:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-17 04:33:23,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:23,640 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-17 04:33:23,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 04:33:23,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:23,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash -938273718, now seen corresponding path program 1 times [2021-12-17 04:33:23,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:23,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600481699] [2021-12-17 04:33:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:23,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:33:23,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:23,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600481699] [2021-12-17 04:33:23,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600481699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:23,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:23,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:33:23,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458304969] [2021-12-17 04:33:23,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:23,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:33:23,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:23,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:33:23,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:23,712 INFO L87 Difference]: Start difference. First operand 3008 states and 4034 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:26,037 INFO L93 Difference]: Finished difference Result 9018 states and 12097 transitions. [2021-12-17 04:33:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:33:26,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2021-12-17 04:33:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:26,054 INFO L225 Difference]: With dead ends: 9018 [2021-12-17 04:33:26,055 INFO L226 Difference]: Without dead ends: 6012 [2021-12-17 04:33:26,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:26,064 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 681 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 827 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:26,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 553 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [827 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 04:33:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2021-12-17 04:33:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 5261. [2021-12-17 04:33:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.2608365019011407) internal successors, (6632), 5260 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:26,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 6632 transitions. [2021-12-17 04:33:26,137 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 6632 transitions. Word has length 159 [2021-12-17 04:33:26,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:26,137 INFO L470 AbstractCegarLoop]: Abstraction has 5261 states and 6632 transitions. [2021-12-17 04:33:26,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:26,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 6632 transitions. [2021-12-17 04:33:26,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-17 04:33:26,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:26,145 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-17 04:33:26,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 04:33:26,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:26,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:26,147 INFO L85 PathProgramCache]: Analyzing trace with hash -548669970, now seen corresponding path program 1 times [2021-12-17 04:33:26,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:26,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121701344] [2021-12-17 04:33:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:26,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:33:26,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:26,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121701344] [2021-12-17 04:33:26,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121701344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:26,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:26,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 04:33:26,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654184822] [2021-12-17 04:33:26,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:26,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 04:33:26,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:26,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 04:33:26,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 04:33:26,328 INFO L87 Difference]: Start difference. First operand 5261 states and 6632 transitions. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:31,142 INFO L93 Difference]: Finished difference Result 17279 states and 21409 transitions. [2021-12-17 04:33:31,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 04:33:31,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 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 194 [2021-12-17 04:33:31,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:31,170 INFO L225 Difference]: With dead ends: 17279 [2021-12-17 04:33:31,170 INFO L226 Difference]: Without dead ends: 12020 [2021-12-17 04:33:31,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-17 04:33:31,183 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 2196 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 7397 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 7976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 7397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:31,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2196 Valid, 656 Invalid, 7976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 7397 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-17 04:33:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12020 states. [2021-12-17 04:33:31,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12020 to 10518. [2021-12-17 04:33:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10518 states, 10517 states have (on average 1.156223257582961) internal successors, (12160), 10517 states have internal predecessors, (12160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10518 states to 10518 states and 12160 transitions. [2021-12-17 04:33:31,320 INFO L78 Accepts]: Start accepts. Automaton has 10518 states and 12160 transitions. Word has length 194 [2021-12-17 04:33:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:31,321 INFO L470 AbstractCegarLoop]: Abstraction has 10518 states and 12160 transitions. [2021-12-17 04:33:31,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 4 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:31,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10518 states and 12160 transitions. [2021-12-17 04:33:31,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-12-17 04:33:31,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:31,324 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:33:31,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 04:33:31,324 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:31,325 INFO L85 PathProgramCache]: Analyzing trace with hash -341145559, now seen corresponding path program 1 times [2021-12-17 04:33:31,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:31,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479349595] [2021-12-17 04:33:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:31,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-17 04:33:31,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:31,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479349595] [2021-12-17 04:33:31,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479349595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:31,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:31,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:33:31,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174561809] [2021-12-17 04:33:31,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:31,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:33:31,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:31,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:33:31,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:33:31,433 INFO L87 Difference]: Start difference. First operand 10518 states and 12160 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:34,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:34,187 INFO L93 Difference]: Finished difference Result 26330 states and 31019 transitions. [2021-12-17 04:33:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:33:34,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 262 [2021-12-17 04:33:34,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:34,221 INFO L225 Difference]: With dead ends: 26330 [2021-12-17 04:33:34,222 INFO L226 Difference]: Without dead ends: 15777 [2021-12-17 04:33:34,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:33:34,230 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 851 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 3961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:34,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 324 Invalid, 3961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 04:33:34,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15777 states. [2021-12-17 04:33:34,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15777 to 14273. [2021-12-17 04:33:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.148612668161435) internal successors, (16393), 14272 states have internal predecessors, (16393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 16393 transitions. [2021-12-17 04:33:34,389 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 16393 transitions. Word has length 262 [2021-12-17 04:33:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:34,390 INFO L470 AbstractCegarLoop]: Abstraction has 14273 states and 16393 transitions. [2021-12-17 04:33:34,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:34,402 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 16393 transitions. [2021-12-17 04:33:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-12-17 04:33:34,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:34,405 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:33:34,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 04:33:34,406 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:34,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:34,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1330764730, now seen corresponding path program 1 times [2021-12-17 04:33:34,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:34,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125949398] [2021-12-17 04:33:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:34,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:33:34,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:34,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125949398] [2021-12-17 04:33:34,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125949398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:34,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:34,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:33:34,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642852109] [2021-12-17 04:33:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:34,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:33:34,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:34,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:33:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:34,529 INFO L87 Difference]: Start difference. First operand 14273 states and 16393 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:37,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:37,151 INFO L93 Difference]: Finished difference Result 41311 states and 47620 transitions. [2021-12-17 04:33:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:33:37,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2021-12-17 04:33:37,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:37,194 INFO L225 Difference]: With dead ends: 41311 [2021-12-17 04:33:37,195 INFO L226 Difference]: Without dead ends: 27040 [2021-12-17 04:33:37,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:37,208 INFO L933 BasicCegarLoop]: 1378 mSDtfsCounter, 667 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:37,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 1386 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 04:33:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27040 states. [2021-12-17 04:33:37,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27040 to 24787. [2021-12-17 04:33:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24787 states, 24786 states have (on average 1.1414508190107318) internal successors, (28292), 24786 states have internal predecessors, (28292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24787 states to 24787 states and 28292 transitions. [2021-12-17 04:33:37,489 INFO L78 Accepts]: Start accepts. Automaton has 24787 states and 28292 transitions. Word has length 276 [2021-12-17 04:33:37,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:37,489 INFO L470 AbstractCegarLoop]: Abstraction has 24787 states and 28292 transitions. [2021-12-17 04:33:37,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 24787 states and 28292 transitions. [2021-12-17 04:33:37,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-12-17 04:33:37,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:37,492 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:33:37,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 04:33:37,493 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:37,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash -533867888, now seen corresponding path program 1 times [2021-12-17 04:33:37,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:37,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716375297] [2021-12-17 04:33:37,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:37,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 41 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:33:37,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:37,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716375297] [2021-12-17 04:33:37,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716375297] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:33:37,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815647651] [2021-12-17 04:33:37,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:37,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:33:37,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:33:37,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:33:37,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 04:33:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:37,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:33:37,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:33:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-17 04:33:38,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:33:38,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815647651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:38,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:33:38,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-12-17 04:33:38,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185284182] [2021-12-17 04:33:38,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:38,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:33:38,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:38,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:33:38,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 04:33:38,142 INFO L87 Difference]: Start difference. First operand 24787 states and 28292 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:40,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:40,850 INFO L93 Difference]: Finished difference Result 60837 states and 70633 transitions. [2021-12-17 04:33:40,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:33:40,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 280 [2021-12-17 04:33:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:40,897 INFO L225 Difference]: With dead ends: 60837 [2021-12-17 04:33:40,897 INFO L226 Difference]: Without dead ends: 36052 [2021-12-17 04:33:40,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 04:33:40,922 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 725 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:40,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 498 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 04:33:40,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36052 states. [2021-12-17 04:33:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36052 to 35301. [2021-12-17 04:33:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35301 states, 35300 states have (on average 1.1458640226628896) internal successors, (40449), 35300 states have internal predecessors, (40449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35301 states to 35301 states and 40449 transitions. [2021-12-17 04:33:41,346 INFO L78 Accepts]: Start accepts. Automaton has 35301 states and 40449 transitions. Word has length 280 [2021-12-17 04:33:41,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:41,347 INFO L470 AbstractCegarLoop]: Abstraction has 35301 states and 40449 transitions. [2021-12-17 04:33:41,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 35301 states and 40449 transitions. [2021-12-17 04:33:41,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-12-17 04:33:41,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:41,350 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:33:41,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 04:33:41,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:33:41,568 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1028166206, now seen corresponding path program 1 times [2021-12-17 04:33:41,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:41,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419929456] [2021-12-17 04:33:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:41,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-12-17 04:33:41,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:41,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419929456] [2021-12-17 04:33:41,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419929456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:41,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:41,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:33:41,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921589950] [2021-12-17 04:33:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:41,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:33:41,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:33:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:41,672 INFO L87 Difference]: Start difference. First operand 35301 states and 40449 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:44,257 INFO L93 Difference]: Finished difference Result 83367 states and 96431 transitions. [2021-12-17 04:33:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:33:44,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 327 [2021-12-17 04:33:44,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:44,309 INFO L225 Difference]: With dead ends: 83367 [2021-12-17 04:33:44,309 INFO L226 Difference]: Without dead ends: 48068 [2021-12-17 04:33:44,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:44,322 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 738 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:44,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 191 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 04:33:44,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48068 states. [2021-12-17 04:33:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48068 to 46566. [2021-12-17 04:33:44,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46566 states, 46565 states have (on average 1.1619241919896919) internal successors, (54105), 46565 states have internal predecessors, (54105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:44,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46566 states to 46566 states and 54105 transitions. [2021-12-17 04:33:44,908 INFO L78 Accepts]: Start accepts. Automaton has 46566 states and 54105 transitions. Word has length 327 [2021-12-17 04:33:44,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:44,909 INFO L470 AbstractCegarLoop]: Abstraction has 46566 states and 54105 transitions. [2021-12-17 04:33:44,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:44,909 INFO L276 IsEmpty]: Start isEmpty. Operand 46566 states and 54105 transitions. [2021-12-17 04:33:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-12-17 04:33:44,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:44,919 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:33:44,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 04:33:44,920 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:44,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:44,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1718673054, now seen corresponding path program 1 times [2021-12-17 04:33:44,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:44,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337543339] [2021-12-17 04:33:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:44,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-17 04:33:45,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:45,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337543339] [2021-12-17 04:33:45,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337543339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:45,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:45,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:33:45,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875760099] [2021-12-17 04:33:45,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:45,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:33:45,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:45,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:33:45,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:45,016 INFO L87 Difference]: Start difference. First operand 46566 states and 54105 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:47,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:47,626 INFO L93 Difference]: Finished difference Result 114909 states and 135315 transitions. [2021-12-17 04:33:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:33:47,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 401 [2021-12-17 04:33:47,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:47,711 INFO L225 Difference]: With dead ends: 114909 [2021-12-17 04:33:47,711 INFO L226 Difference]: Without dead ends: 68345 [2021-12-17 04:33:47,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:47,755 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 679 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:47,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [679 Valid, 1233 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 04:33:47,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68345 states. [2021-12-17 04:33:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68345 to 66092. [2021-12-17 04:33:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66092 states, 66091 states have (on average 1.136523883736061) internal successors, (75114), 66091 states have internal predecessors, (75114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66092 states to 66092 states and 75114 transitions. [2021-12-17 04:33:48,484 INFO L78 Accepts]: Start accepts. Automaton has 66092 states and 75114 transitions. Word has length 401 [2021-12-17 04:33:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:48,485 INFO L470 AbstractCegarLoop]: Abstraction has 66092 states and 75114 transitions. [2021-12-17 04:33:48,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 66092 states and 75114 transitions. [2021-12-17 04:33:48,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-12-17 04:33:48,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:48,490 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:33:48,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 04:33:48,491 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:48,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1114491564, now seen corresponding path program 1 times [2021-12-17 04:33:48,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:48,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935097237] [2021-12-17 04:33:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:48,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-17 04:33:48,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:48,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935097237] [2021-12-17 04:33:48,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935097237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:48,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:48,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:33:48,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349260229] [2021-12-17 04:33:48,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:48,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:33:48,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:48,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:33:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:48,584 INFO L87 Difference]: Start difference. First operand 66092 states and 75114 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:51,362 INFO L93 Difference]: Finished difference Result 150206 states and 173275 transitions. [2021-12-17 04:33:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:33:51,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 405 [2021-12-17 04:33:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:51,468 INFO L225 Difference]: With dead ends: 150206 [2021-12-17 04:33:51,469 INFO L226 Difference]: Without dead ends: 84116 [2021-12-17 04:33:51,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:51,607 INFO L933 BasicCegarLoop]: 1277 mSDtfsCounter, 673 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:51,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 1285 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 04:33:51,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84116 states. [2021-12-17 04:33:52,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84116 to 84116. [2021-12-17 04:33:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84116 states, 84115 states have (on average 1.1197883849491768) internal successors, (94191), 84115 states have internal predecessors, (94191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84116 states to 84116 states and 94191 transitions. [2021-12-17 04:33:52,412 INFO L78 Accepts]: Start accepts. Automaton has 84116 states and 94191 transitions. Word has length 405 [2021-12-17 04:33:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:52,412 INFO L470 AbstractCegarLoop]: Abstraction has 84116 states and 94191 transitions. [2021-12-17 04:33:52,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:52,413 INFO L276 IsEmpty]: Start isEmpty. Operand 84116 states and 94191 transitions. [2021-12-17 04:33:52,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-12-17 04:33:52,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:52,418 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:33:52,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 04:33:52,418 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:52,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1052886306, now seen corresponding path program 1 times [2021-12-17 04:33:52,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:52,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585343362] [2021-12-17 04:33:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:52,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-12-17 04:33:52,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:52,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585343362] [2021-12-17 04:33:52,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585343362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:52,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:52,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:33:52,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818698563] [2021-12-17 04:33:52,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:52,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:33:52,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:33:52,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:52,653 INFO L87 Difference]: Start difference. First operand 84116 states and 94191 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:55,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:55,144 INFO L93 Difference]: Finished difference Result 184752 states and 206449 transitions. [2021-12-17 04:33:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:33:55,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 409 [2021-12-17 04:33:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:55,277 INFO L225 Difference]: With dead ends: 184752 [2021-12-17 04:33:55,278 INFO L226 Difference]: Without dead ends: 99887 [2021-12-17 04:33:55,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:55,326 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 818 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:55,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [818 Valid, 900 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-17 04:33:55,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99887 states. [2021-12-17 04:33:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99887 to 94630. [2021-12-17 04:33:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94630 states, 94629 states have (on average 1.102304790286276) internal successors, (104310), 94629 states have internal predecessors, (104310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:56,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94630 states to 94630 states and 104310 transitions. [2021-12-17 04:33:56,385 INFO L78 Accepts]: Start accepts. Automaton has 94630 states and 104310 transitions. Word has length 409 [2021-12-17 04:33:56,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:33:56,386 INFO L470 AbstractCegarLoop]: Abstraction has 94630 states and 104310 transitions. [2021-12-17 04:33:56,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:56,386 INFO L276 IsEmpty]: Start isEmpty. Operand 94630 states and 104310 transitions. [2021-12-17 04:33:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-12-17 04:33:56,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:33:56,393 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:33:56,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 04:33:56,394 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:33:56,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:33:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash 684792886, now seen corresponding path program 1 times [2021-12-17 04:33:56,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:33:56,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175726226] [2021-12-17 04:33:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:33:56,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:33:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:33:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-17 04:33:56,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:33:56,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175726226] [2021-12-17 04:33:56,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175726226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:33:56,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:33:56,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:33:56,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658177960] [2021-12-17 04:33:56,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:33:56,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:33:56,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:33:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:33:56,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:56,487 INFO L87 Difference]: Start difference. First operand 94630 states and 104310 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:33:59,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:33:59,526 INFO L93 Difference]: Finished difference Result 219300 states and 243834 transitions. [2021-12-17 04:33:59,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:33:59,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 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 468 [2021-12-17 04:33:59,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:33:59,845 INFO L225 Difference]: With dead ends: 219300 [2021-12-17 04:33:59,846 INFO L226 Difference]: Without dead ends: 124672 [2021-12-17 04:33:59,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:33:59,866 INFO L933 BasicCegarLoop]: 1265 mSDtfsCounter, 699 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 478 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 478 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:33:59,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 1273 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [478 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 04:33:59,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124672 states. [2021-12-17 04:34:00,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124672 to 118662. [2021-12-17 04:34:00,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118662 states, 118661 states have (on average 1.0959455929075266) internal successors, (130046), 118661 states have internal predecessors, (130046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:01,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118662 states to 118662 states and 130046 transitions. [2021-12-17 04:34:01,130 INFO L78 Accepts]: Start accepts. Automaton has 118662 states and 130046 transitions. Word has length 468 [2021-12-17 04:34:01,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:34:01,130 INFO L470 AbstractCegarLoop]: Abstraction has 118662 states and 130046 transitions. [2021-12-17 04:34:01,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:01,131 INFO L276 IsEmpty]: Start isEmpty. Operand 118662 states and 130046 transitions. [2021-12-17 04:34:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2021-12-17 04:34:01,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:34:01,140 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:34:01,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 04:34:01,140 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:34:01,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:34:01,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1393823655, now seen corresponding path program 1 times [2021-12-17 04:34:01,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:34:01,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484077640] [2021-12-17 04:34:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:34:01,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:34:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:34:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-12-17 04:34:01,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:34:01,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484077640] [2021-12-17 04:34:01,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484077640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:34:01,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:34:01,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:34:01,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548111323] [2021-12-17 04:34:01,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:34:01,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:34:01,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:34:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:34:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:34:01,433 INFO L87 Difference]: Start difference. First operand 118662 states and 130046 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:04,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:34:04,380 INFO L93 Difference]: Finished difference Result 285386 states and 315545 transitions. [2021-12-17 04:34:04,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:34:04,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 521 [2021-12-17 04:34:04,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:34:04,590 INFO L225 Difference]: With dead ends: 285386 [2021-12-17 04:34:04,590 INFO L226 Difference]: Without dead ends: 166726 [2021-12-17 04:34:04,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:34:04,649 INFO L933 BasicCegarLoop]: 1263 mSDtfsCounter, 610 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 04:34:04,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 1270 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 04:34:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166726 states. [2021-12-17 04:34:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166726 to 156963. [2021-12-17 04:34:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156963 states, 156962 states have (on average 1.0888367885220627) internal successors, (170906), 156962 states have internal predecessors, (170906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:06,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156963 states to 156963 states and 170906 transitions. [2021-12-17 04:34:06,601 INFO L78 Accepts]: Start accepts. Automaton has 156963 states and 170906 transitions. Word has length 521 [2021-12-17 04:34:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:34:06,602 INFO L470 AbstractCegarLoop]: Abstraction has 156963 states and 170906 transitions. [2021-12-17 04:34:06,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 156963 states and 170906 transitions. [2021-12-17 04:34:06,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2021-12-17 04:34:06,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:34:06,619 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:34:06,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 04:34:06,620 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:34:06,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:34:06,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1416325111, now seen corresponding path program 1 times [2021-12-17 04:34:06,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:34:06,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104028051] [2021-12-17 04:34:06,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:34:06,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:34:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:34:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-12-17 04:34:07,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:34:07,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104028051] [2021-12-17 04:34:07,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104028051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:34:07,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:34:07,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:34:07,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359995579] [2021-12-17 04:34:07,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:34:07,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:34:07,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:34:07,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:34:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:34:07,141 INFO L87 Difference]: Start difference. First operand 156963 states and 170906 transitions. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:34:12,145 INFO L93 Difference]: Finished difference Result 477644 states and 520648 transitions. [2021-12-17 04:34:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:34:12,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 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 628 [2021-12-17 04:34:12,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:34:12,555 INFO L225 Difference]: With dead ends: 477644 [2021-12-17 04:34:12,555 INFO L226 Difference]: Without dead ends: 320683 [2021-12-17 04:34:12,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:34:12,620 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 1702 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4687 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 5294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 4687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:34:12,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 81 Invalid, 5294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 4687 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-17 04:34:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320683 states. [2021-12-17 04:34:15,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320683 to 317677. [2021-12-17 04:34:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317677 states, 317676 states have (on average 1.0866228484367721) internal successors, (345194), 317676 states have internal predecessors, (345194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:16,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317677 states to 317677 states and 345194 transitions. [2021-12-17 04:34:16,799 INFO L78 Accepts]: Start accepts. Automaton has 317677 states and 345194 transitions. Word has length 628 [2021-12-17 04:34:16,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:34:16,800 INFO L470 AbstractCegarLoop]: Abstraction has 317677 states and 345194 transitions. [2021-12-17 04:34:16,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 317677 states and 345194 transitions. [2021-12-17 04:34:16,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2021-12-17 04:34:16,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:34:16,822 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:34:16,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 04:34:16,823 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:34:16,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:34:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1226073397, now seen corresponding path program 1 times [2021-12-17 04:34:16,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:34:16,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798091664] [2021-12-17 04:34:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:34:16,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:34:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:34:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 520 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2021-12-17 04:34:17,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:34:17,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798091664] [2021-12-17 04:34:17,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798091664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:34:17,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:34:17,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 04:34:17,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246334716] [2021-12-17 04:34:17,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:34:17,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:34:17,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:34:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:34:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:34:17,011 INFO L87 Difference]: Start difference. First operand 317677 states and 345194 transitions. Second operand has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:23,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:34:23,611 INFO L93 Difference]: Finished difference Result 761522 states and 829170 transitions. [2021-12-17 04:34:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:34:23,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 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 650 [2021-12-17 04:34:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:34:24,353 INFO L225 Difference]: With dead ends: 761522 [2021-12-17 04:34:24,353 INFO L226 Difference]: Without dead ends: 444598 [2021-12-17 04:34:24,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:34:24,510 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 1309 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4958 mSolverCounterSat, 1092 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 6050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1092 IncrementalHoareTripleChecker+Valid, 4958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-17 04:34:24,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 238 Invalid, 6050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1092 Valid, 4958 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-17 04:34:24,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444598 states. [2021-12-17 04:34:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444598 to 402540. [2021-12-17 04:34:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402540 states, 402539 states have (on average 1.0912110379366968) internal successors, (439255), 402539 states have internal predecessors, (439255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402540 states to 402540 states and 439255 transitions. [2021-12-17 04:34:30,129 INFO L78 Accepts]: Start accepts. Automaton has 402540 states and 439255 transitions. Word has length 650 [2021-12-17 04:34:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:34:30,129 INFO L470 AbstractCegarLoop]: Abstraction has 402540 states and 439255 transitions. [2021-12-17 04:34:30,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.25) internal successors, (465), 4 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 402540 states and 439255 transitions. [2021-12-17 04:34:30,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2021-12-17 04:34:30,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:34:30,160 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:34:30,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 04:34:30,160 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:34:30,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:34:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash 817068481, now seen corresponding path program 1 times [2021-12-17 04:34:30,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:34:30,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012859798] [2021-12-17 04:34:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:34:30,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:34:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:34:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 1109 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-12-17 04:34:30,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:34:30,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012859798] [2021-12-17 04:34:30,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012859798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:34:30,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:34:30,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 04:34:30,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19892539] [2021-12-17 04:34:30,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:34:30,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:34:30,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:34:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:34:30,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:34:30,713 INFO L87 Difference]: Start difference. First operand 402540 states and 439255 transitions. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:34:36,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:34:36,946 INFO L93 Difference]: Finished difference Result 866660 states and 946715 transitions. [2021-12-17 04:34:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:34:36,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 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 703 [2021-12-17 04:34:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:34:37,713 INFO L225 Difference]: With dead ends: 866660 [2021-12-17 04:34:37,713 INFO L226 Difference]: Without dead ends: 464122 [2021-12-17 04:34:37,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:34:37,901 INFO L933 BasicCegarLoop]: 1289 mSDtfsCounter, 1309 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 5360 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 6114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 5360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-17 04:34:37,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 1310 Invalid, 6114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 5360 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-17 04:34:38,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464122 states.