./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82a99c0caa947a7848bb6875be4893ad373e372b2b1f190b4cefbfd2e0a95c5c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:28:19,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:28:19,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:28:19,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:28:19,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:28:19,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:28:19,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:28:19,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:28:19,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:28:19,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:28:19,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:28:19,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:28:19,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:28:19,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:28:19,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:28:19,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:28:19,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:28:19,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:28:19,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:28:19,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:28:19,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:28:19,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:28:19,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:28:19,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:28:19,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:28:19,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:28:19,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:28:19,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:28:19,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:28:19,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:28:19,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:28:19,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:28:19,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:28:19,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:28:19,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:28:19,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:28:19,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:28:19,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:28:19,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:28:19,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:28:19,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:28:19,247 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:28:19,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:28:19,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:28:19,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:28:19,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:28:19,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:28:19,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:28:19,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:28:19,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:28:19,275 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:28:19,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:28:19,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:28:19,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:28:19,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:28:19,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:28:19,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:28:19,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:28:19,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:28:19,277 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:28:19,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:28:19,277 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:28:19,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:28:19,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:28:19,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:28:19,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:28:19,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:28:19,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:28:19,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:28:19,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:28:19,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:28:19,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:28:19,279 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:28:19,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:28:19,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:28:19,279 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82a99c0caa947a7848bb6875be4893ad373e372b2b1f190b4cefbfd2e0a95c5c [2021-12-28 02:28:19,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:28:19,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:28:19,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:28:19,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:28:19,580 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:28:19,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-12-28 02:28:19,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4571b5e/01b0dcf5f5314319a194a86b7c304fe9/FLAGd100bf980 [2021-12-28 02:28:20,209 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:28:20,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-12-28 02:28:20,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4571b5e/01b0dcf5f5314319a194a86b7c304fe9/FLAGd100bf980 [2021-12-28 02:28:20,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c4571b5e/01b0dcf5f5314319a194a86b7c304fe9 [2021-12-28 02:28:20,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:28:20,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:28:20,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:28:20,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:28:20,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:28:20,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:28:20" (1/1) ... [2021-12-28 02:28:20,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4029d800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:20, skipping insertion in model container [2021-12-28 02:28:20,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:28:20" (1/1) ... [2021-12-28 02:28:20,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:28:20,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:28:21,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label02.c[26888,26901] [2021-12-28 02:28:21,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label02.c[34178,34191] [2021-12-28 02:28:21,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:28:21,535 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:28:21,591 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label02.c[26888,26901] [2021-12-28 02:28:21,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label02.c[34178,34191] [2021-12-28 02:28:21,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:28:21,888 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:28:21,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21 WrapperNode [2021-12-28 02:28:21,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:28:21,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:28:21,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:28:21,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:28:21,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (1/1) ... [2021-12-28 02:28:21,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (1/1) ... [2021-12-28 02:28:22,308 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5279 [2021-12-28 02:28:22,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:28:22,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:28:22,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:28:22,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:28:22,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (1/1) ... [2021-12-28 02:28:22,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (1/1) ... [2021-12-28 02:28:22,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (1/1) ... [2021-12-28 02:28:22,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (1/1) ... [2021-12-28 02:28:22,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (1/1) ... [2021-12-28 02:28:22,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (1/1) ... [2021-12-28 02:28:22,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (1/1) ... [2021-12-28 02:28:22,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:28:22,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:28:22,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:28:22,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:28:22,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (1/1) ... [2021-12-28 02:28:22,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:28:22,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:28:22,721 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) [2021-12-28 02:28:22,744 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 [2021-12-28 02:28:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:28:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:28:22,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:28:22,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:28:22,977 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:28:22,979 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:28:25,810 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:28:25,823 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:28:25,824 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:28:25,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:28:25 BoogieIcfgContainer [2021-12-28 02:28:25,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:28:25,827 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:28:25,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:28:25,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:28:25,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:28:20" (1/3) ... [2021-12-28 02:28:25,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185cc13a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:28:25, skipping insertion in model container [2021-12-28 02:28:25,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:28:21" (2/3) ... [2021-12-28 02:28:25,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185cc13a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:28:25, skipping insertion in model container [2021-12-28 02:28:25,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:28:25" (3/3) ... [2021-12-28 02:28:25,832 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label02.c [2021-12-28 02:28:25,835 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:28:25,836 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:28:25,869 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:28:25,873 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 [2021-12-28 02:28:25,874 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:28:25,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-28 02:28:25,902 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:25,902 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] [2021-12-28 02:28:25,903 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:25,907 INFO L85 PathProgramCache]: Analyzing trace with hash -805214309, now seen corresponding path program 1 times [2021-12-28 02:28:25,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:25,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849275362] [2021-12-28 02:28:25,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:25,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:26,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:26,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849275362] [2021-12-28 02:28:26,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849275362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:26,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:26,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:28:26,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188792862] [2021-12-28 02:28:26,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:26,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:28:26,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:26,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:28:26,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:28:26,123 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 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 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:26,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:26,198 INFO L93 Difference]: Finished difference Result 1861 states and 3516 transitions. [2021-12-28 02:28:26,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:28:26,200 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-28 02:28:26,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:26,224 INFO L225 Difference]: With dead ends: 1861 [2021-12-28 02:28:26,225 INFO L226 Difference]: Without dead ends: 899 [2021-12-28 02:28:26,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:28:26,236 INFO L933 BasicCegarLoop]: 1755 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:26,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-12-28 02:28:26,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-12-28 02:28:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8851727982162765) internal successors, (1691), 898 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1691 transitions. [2021-12-28 02:28:26,344 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1691 transitions. Word has length 46 [2021-12-28 02:28:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:26,344 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1691 transitions. [2021-12-28 02:28:26,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1691 transitions. [2021-12-28 02:28:26,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-28 02:28:26,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:26,346 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] [2021-12-28 02:28:26,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:28:26,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2021-12-28 02:28:26,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:26,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428773061] [2021-12-28 02:28:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:26,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:26,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:26,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428773061] [2021-12-28 02:28:26,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428773061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:26,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:26,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:28:26,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667391700] [2021-12-28 02:28:26,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:26,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:28:26,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:26,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:28:26,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:28:26,472 INFO L87 Difference]: Start difference. First operand 899 states and 1691 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:26,625 INFO L93 Difference]: Finished difference Result 981 states and 1819 transitions. [2021-12-28 02:28:26,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:28:26,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-28 02:28:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:26,638 INFO L225 Difference]: With dead ends: 981 [2021-12-28 02:28:26,641 INFO L226 Difference]: Without dead ends: 899 [2021-12-28 02:28:26,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:28:26,644 INFO L933 BasicCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:26,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:28:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-12-28 02:28:26,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-12-28 02:28:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8171683389074693) internal successors, (1630), 898 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1630 transitions. [2021-12-28 02:28:26,666 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1630 transitions. Word has length 46 [2021-12-28 02:28:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:26,667 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1630 transitions. [2021-12-28 02:28:26,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1630 transitions. [2021-12-28 02:28:26,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-28 02:28:26,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:26,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:26,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:28:26,669 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:26,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:26,670 INFO L85 PathProgramCache]: Analyzing trace with hash 614555915, now seen corresponding path program 1 times [2021-12-28 02:28:26,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:26,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420613539] [2021-12-28 02:28:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:26,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:26,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:26,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420613539] [2021-12-28 02:28:26,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420613539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:26,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:26,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:28:26,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091707345] [2021-12-28 02:28:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:26,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:26,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:26,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:26,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:26,790 INFO L87 Difference]: Start difference. First operand 899 states and 1630 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:29,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:29,414 INFO L93 Difference]: Finished difference Result 2403 states and 4503 transitions. [2021-12-28 02:28:29,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:29,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-28 02:28:29,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:29,420 INFO L225 Difference]: With dead ends: 2403 [2021-12-28 02:28:29,420 INFO L226 Difference]: Without dead ends: 1650 [2021-12-28 02:28:29,421 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 [2021-12-28 02:28:29,422 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 929 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:29,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 666 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-28 02:28:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2021-12-28 02:28:29,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2021-12-28 02:28:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.583131067961165) internal successors, (2609), 1649 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:29,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2609 transitions. [2021-12-28 02:28:29,452 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2609 transitions. Word has length 63 [2021-12-28 02:28:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:29,453 INFO L470 AbstractCegarLoop]: Abstraction has 1650 states and 2609 transitions. [2021-12-28 02:28:29,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2609 transitions. [2021-12-28 02:28:29,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:29,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:29,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:29,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:28:29,457 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:29,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:29,457 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2021-12-28 02:28:29,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:29,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063877338] [2021-12-28 02:28:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:29,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:29,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:29,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063877338] [2021-12-28 02:28:29,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063877338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:29,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:29,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:29,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112735106] [2021-12-28 02:28:29,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:29,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:29,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:29,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:29,578 INFO L87 Difference]: Start difference. First operand 1650 states and 2609 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:29,604 INFO L93 Difference]: Finished difference Result 1800 states and 2847 transitions. [2021-12-28 02:28:29,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:29,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:28:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:29,611 INFO L225 Difference]: With dead ends: 1800 [2021-12-28 02:28:29,612 INFO L226 Difference]: Without dead ends: 1722 [2021-12-28 02:28:29,613 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 [2021-12-28 02:28:29,619 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:29,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:29,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-12-28 02:28:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2021-12-28 02:28:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.5838183934807917) internal successors, (2721), 1719 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2721 transitions. [2021-12-28 02:28:29,657 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2721 transitions. Word has length 106 [2021-12-28 02:28:29,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:29,657 INFO L470 AbstractCegarLoop]: Abstraction has 1720 states and 2721 transitions. [2021-12-28 02:28:29,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:29,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2721 transitions. [2021-12-28 02:28:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:29,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:29,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:29,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:28:29,659 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:29,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2021-12-28 02:28:29,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:29,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062111725] [2021-12-28 02:28:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:29,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:29,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:29,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062111725] [2021-12-28 02:28:29,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062111725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:29,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:29,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:29,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738687176] [2021-12-28 02:28:29,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:29,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:29,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:29,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:29,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:29,764 INFO L87 Difference]: Start difference. First operand 1720 states and 2721 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:29,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:29,792 INFO L93 Difference]: Finished difference Result 2004 states and 3173 transitions. [2021-12-28 02:28:29,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:29,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:28:29,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:29,799 INFO L225 Difference]: With dead ends: 2004 [2021-12-28 02:28:29,799 INFO L226 Difference]: Without dead ends: 1856 [2021-12-28 02:28:29,800 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 [2021-12-28 02:28:29,801 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:29,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-12-28 02:28:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1854. [2021-12-28 02:28:29,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1852 states have (on average 1.5842332613390928) internal successors, (2934), 1853 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:29,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2934 transitions. [2021-12-28 02:28:29,832 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2934 transitions. Word has length 106 [2021-12-28 02:28:29,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:29,833 INFO L470 AbstractCegarLoop]: Abstraction has 1854 states and 2934 transitions. [2021-12-28 02:28:29,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2934 transitions. [2021-12-28 02:28:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:29,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:29,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:29,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:28:29,841 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2021-12-28 02:28:29,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:29,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333296341] [2021-12-28 02:28:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:29,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:29,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:29,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333296341] [2021-12-28 02:28:29,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333296341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:29,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:29,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:29,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577260799] [2021-12-28 02:28:29,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:29,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:29,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:29,930 INFO L87 Difference]: Start difference. First operand 1854 states and 2934 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:29,961 INFO L93 Difference]: Finished difference Result 2394 states and 3792 transitions. [2021-12-28 02:28:29,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:29,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:28:29,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:29,969 INFO L225 Difference]: With dead ends: 2394 [2021-12-28 02:28:29,969 INFO L226 Difference]: Without dead ends: 2112 [2021-12-28 02:28:29,970 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 [2021-12-28 02:28:29,971 INFO L933 BasicCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:29,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:29,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2021-12-28 02:28:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2110. [2021-12-28 02:28:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2108 states have (on average 1.5834914611005693) internal successors, (3338), 2109 states have internal predecessors, (3338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3338 transitions. [2021-12-28 02:28:30,010 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3338 transitions. Word has length 106 [2021-12-28 02:28:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:30,010 INFO L470 AbstractCegarLoop]: Abstraction has 2110 states and 3338 transitions. [2021-12-28 02:28:30,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3338 transitions. [2021-12-28 02:28:30,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:30,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:30,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:30,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 02:28:30,012 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:30,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:30,013 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2021-12-28 02:28:30,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:30,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032831864] [2021-12-28 02:28:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:30,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:30,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:30,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032831864] [2021-12-28 02:28:30,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032831864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:30,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:30,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:30,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782019884] [2021-12-28 02:28:30,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:30,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:30,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:30,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:30,054 INFO L87 Difference]: Start difference. First operand 2110 states and 3338 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:30,091 INFO L93 Difference]: Finished difference Result 3138 states and 4964 transitions. [2021-12-28 02:28:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:30,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:28:30,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:30,098 INFO L225 Difference]: With dead ends: 3138 [2021-12-28 02:28:30,098 INFO L226 Difference]: Without dead ends: 2600 [2021-12-28 02:28:30,099 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 [2021-12-28 02:28:30,100 INFO L933 BasicCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:30,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:30,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-12-28 02:28:30,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2598. [2021-12-28 02:28:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2598 states, 2596 states have (on average 1.5801232665639446) internal successors, (4102), 2597 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2598 states to 2598 states and 4102 transitions. [2021-12-28 02:28:30,149 INFO L78 Accepts]: Start accepts. Automaton has 2598 states and 4102 transitions. Word has length 106 [2021-12-28 02:28:30,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:30,150 INFO L470 AbstractCegarLoop]: Abstraction has 2598 states and 4102 transitions. [2021-12-28 02:28:30,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2598 states and 4102 transitions. [2021-12-28 02:28:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:30,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:30,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:30,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 02:28:30,151 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:30,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:30,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2021-12-28 02:28:30,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:30,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540862341] [2021-12-28 02:28:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:30,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:30,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:30,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540862341] [2021-12-28 02:28:30,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540862341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:30,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:30,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:30,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921901091] [2021-12-28 02:28:30,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:30,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:30,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:30,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:30,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:30,221 INFO L87 Difference]: Start difference. First operand 2598 states and 4102 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:30,280 INFO L93 Difference]: Finished difference Result 4554 states and 7176 transitions. [2021-12-28 02:28:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:30,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:28:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:30,291 INFO L225 Difference]: With dead ends: 4554 [2021-12-28 02:28:30,291 INFO L226 Difference]: Without dead ends: 3528 [2021-12-28 02:28:30,293 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 [2021-12-28 02:28:30,294 INFO L933 BasicCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:30,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2021-12-28 02:28:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2021-12-28 02:28:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3524 states have (on average 1.572644721906924) internal successors, (5542), 3525 states have internal predecessors, (5542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5542 transitions. [2021-12-28 02:28:30,375 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5542 transitions. Word has length 106 [2021-12-28 02:28:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:30,376 INFO L470 AbstractCegarLoop]: Abstraction has 3526 states and 5542 transitions. [2021-12-28 02:28:30,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5542 transitions. [2021-12-28 02:28:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:30,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:30,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:30,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 02:28:30,378 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:30,379 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2021-12-28 02:28:30,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:30,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880637519] [2021-12-28 02:28:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:30,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:30,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:30,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880637519] [2021-12-28 02:28:30,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880637519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:30,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:30,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:30,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298344902] [2021-12-28 02:28:30,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:30,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:30,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:30,435 INFO L87 Difference]: Start difference. First operand 3526 states and 5542 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:30,529 INFO L93 Difference]: Finished difference Result 7242 states and 11336 transitions. [2021-12-28 02:28:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:30,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:28:30,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:30,545 INFO L225 Difference]: With dead ends: 7242 [2021-12-28 02:28:30,545 INFO L226 Difference]: Without dead ends: 5288 [2021-12-28 02:28:30,551 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 [2021-12-28 02:28:30,553 INFO L933 BasicCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:30,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5288 states. [2021-12-28 02:28:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 5286. [2021-12-28 02:28:30,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 5284 states have (on average 1.560560181680545) internal successors, (8246), 5285 states have internal predecessors, (8246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 8246 transitions. [2021-12-28 02:28:30,731 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 8246 transitions. Word has length 106 [2021-12-28 02:28:30,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:30,731 INFO L470 AbstractCegarLoop]: Abstraction has 5286 states and 8246 transitions. [2021-12-28 02:28:30,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 8246 transitions. [2021-12-28 02:28:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:30,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:30,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:30,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 02:28:30,733 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:30,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2021-12-28 02:28:30,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:30,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743749902] [2021-12-28 02:28:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:30,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:30,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:30,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743749902] [2021-12-28 02:28:30,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743749902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:30,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:30,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:30,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368745947] [2021-12-28 02:28:30,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:30,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:30,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:30,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:30,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:30,775 INFO L87 Difference]: Start difference. First operand 5286 states and 8246 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:30,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:30,945 INFO L93 Difference]: Finished difference Result 12330 states and 19128 transitions. [2021-12-28 02:28:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:30,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:28:30,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:30,970 INFO L225 Difference]: With dead ends: 12330 [2021-12-28 02:28:30,970 INFO L226 Difference]: Without dead ends: 8616 [2021-12-28 02:28:30,977 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 [2021-12-28 02:28:30,977 INFO L933 BasicCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:30,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:30,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2021-12-28 02:28:31,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 8614. [2021-12-28 02:28:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8614 states, 8612 states have (on average 1.5445889456572224) internal successors, (13302), 8613 states have internal predecessors, (13302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8614 states to 8614 states and 13302 transitions. [2021-12-28 02:28:31,314 INFO L78 Accepts]: Start accepts. Automaton has 8614 states and 13302 transitions. Word has length 106 [2021-12-28 02:28:31,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:31,315 INFO L470 AbstractCegarLoop]: Abstraction has 8614 states and 13302 transitions. [2021-12-28 02:28:31,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:31,315 INFO L276 IsEmpty]: Start isEmpty. Operand 8614 states and 13302 transitions. [2021-12-28 02:28:31,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-28 02:28:31,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:31,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:31,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 02:28:31,317 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:31,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:31,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2021-12-28 02:28:31,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:31,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265376435] [2021-12-28 02:28:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:31,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:31,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:31,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265376435] [2021-12-28 02:28:31,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265376435] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:31,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:31,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 02:28:31,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433516298] [2021-12-28 02:28:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:31,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 02:28:31,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:31,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 02:28:31,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 02:28:31,413 INFO L87 Difference]: Start difference. First operand 8614 states and 13302 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:35,467 INFO L93 Difference]: Finished difference Result 121286 states and 186374 transitions. [2021-12-28 02:28:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 02:28:35,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-12-28 02:28:35,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:35,705 INFO L225 Difference]: With dead ends: 121286 [2021-12-28 02:28:35,705 INFO L226 Difference]: Without dead ends: 114244 [2021-12-28 02:28:35,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-28 02:28:35,737 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:35,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:28:35,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114244 states. [2021-12-28 02:28:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114244 to 15654. [2021-12-28 02:28:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15654 states, 15652 states have (on average 1.5245336059289547) internal successors, (23862), 15653 states have internal predecessors, (23862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15654 states to 15654 states and 23862 transitions. [2021-12-28 02:28:37,334 INFO L78 Accepts]: Start accepts. Automaton has 15654 states and 23862 transitions. Word has length 106 [2021-12-28 02:28:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:37,334 INFO L470 AbstractCegarLoop]: Abstraction has 15654 states and 23862 transitions. [2021-12-28 02:28:37,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 15654 states and 23862 transitions. [2021-12-28 02:28:37,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 02:28:37,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:37,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:37,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 02:28:37,336 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:37,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:37,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2021-12-28 02:28:37,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:37,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892498388] [2021-12-28 02:28:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:37,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:37,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:37,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:37,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892498388] [2021-12-28 02:28:37,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892498388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:37,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:37,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:37,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120080666] [2021-12-28 02:28:37,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:37,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:37,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:37,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:37,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:37,398 INFO L87 Difference]: Start difference. First operand 15654 states and 23862 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:39,198 INFO L93 Difference]: Finished difference Result 42410 states and 64184 transitions. [2021-12-28 02:28:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:39,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-28 02:28:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:39,249 INFO L225 Difference]: With dead ends: 42410 [2021-12-28 02:28:39,250 INFO L226 Difference]: Without dead ends: 28328 [2021-12-28 02:28:39,268 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 [2021-12-28 02:28:39,268 INFO L933 BasicCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:39,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28328 states. [2021-12-28 02:28:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28328 to 28070. [2021-12-28 02:28:41,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.4931594698589141) internal successors, (41910), 28069 states have internal predecessors, (41910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41910 transitions. [2021-12-28 02:28:41,125 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41910 transitions. Word has length 108 [2021-12-28 02:28:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:41,125 INFO L470 AbstractCegarLoop]: Abstraction has 28070 states and 41910 transitions. [2021-12-28 02:28:41,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41910 transitions. [2021-12-28 02:28:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-28 02:28:41,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:41,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:41,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 02:28:41,127 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:41,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2021-12-28 02:28:41,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:41,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748309897] [2021-12-28 02:28:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:41,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:41,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:41,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:41,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748309897] [2021-12-28 02:28:41,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748309897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:41,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:41,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 02:28:41,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896810005] [2021-12-28 02:28:41,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:41,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 02:28:41,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:41,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 02:28:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-28 02:28:41,349 INFO L87 Difference]: Start difference. First operand 28070 states and 41910 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:43,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:43,377 INFO L93 Difference]: Finished difference Result 54570 states and 81336 transitions. [2021-12-28 02:28:43,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:28:43,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-28 02:28:43,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:43,410 INFO L225 Difference]: With dead ends: 54570 [2021-12-28 02:28:43,411 INFO L226 Difference]: Without dead ends: 28072 [2021-12-28 02:28:43,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:28:43,433 INFO L933 BasicCegarLoop]: 1620 mSDtfsCounter, 3608 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 2473 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:43,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3608 Valid, 2473 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 02:28:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28072 states. [2021-12-28 02:28:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28072 to 28070. [2021-12-28 02:28:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.4840387630041327) internal successors, (41654), 28069 states have internal predecessors, (41654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41654 transitions. [2021-12-28 02:28:45,444 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41654 transitions. Word has length 108 [2021-12-28 02:28:45,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:45,444 INFO L470 AbstractCegarLoop]: Abstraction has 28070 states and 41654 transitions. [2021-12-28 02:28:45,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:45,445 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41654 transitions. [2021-12-28 02:28:45,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 02:28:45,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:45,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:45,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 02:28:45,446 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:45,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2021-12-28 02:28:45,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:45,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785985271] [2021-12-28 02:28:45,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:45,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:45,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:45,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785985271] [2021-12-28 02:28:45,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785985271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:45,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:45,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:28:45,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491587718] [2021-12-28 02:28:45,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:45,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:28:45,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:45,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:28:45,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:28:45,518 INFO L87 Difference]: Start difference. First operand 28070 states and 41654 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:47,431 INFO L93 Difference]: Finished difference Result 54568 states and 80823 transitions. [2021-12-28 02:28:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 02:28:47,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-28 02:28:47,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:47,479 INFO L225 Difference]: With dead ends: 54568 [2021-12-28 02:28:47,479 INFO L226 Difference]: Without dead ends: 28070 [2021-12-28 02:28:47,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-28 02:28:47,496 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 4752 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:47,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4752 Valid, 3123 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:47,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28070 states. [2021-12-28 02:28:49,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28070 to 28070. [2021-12-28 02:28:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28070 states, 28068 states have (on average 1.4749180561493516) internal successors, (41398), 28069 states have internal predecessors, (41398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:49,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28070 states to 28070 states and 41398 transitions. [2021-12-28 02:28:49,610 INFO L78 Accepts]: Start accepts. Automaton has 28070 states and 41398 transitions. Word has length 109 [2021-12-28 02:28:49,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:49,611 INFO L470 AbstractCegarLoop]: Abstraction has 28070 states and 41398 transitions. [2021-12-28 02:28:49,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:49,611 INFO L276 IsEmpty]: Start isEmpty. Operand 28070 states and 41398 transitions. [2021-12-28 02:28:49,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-28 02:28:49,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:49,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:49,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 02:28:49,612 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:49,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:49,613 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2021-12-28 02:28:49,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:49,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357739652] [2021-12-28 02:28:49,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:49,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:49,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:49,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357739652] [2021-12-28 02:28:49,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357739652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:49,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:49,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:28:49,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650611580] [2021-12-28 02:28:49,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:49,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:28:49,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:49,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:28:49,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:28:49,682 INFO L87 Difference]: Start difference. First operand 28070 states and 41398 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:52,862 INFO L93 Difference]: Finished difference Result 47696 states and 69867 transitions. [2021-12-28 02:28:52,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 02:28:52,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-12-28 02:28:52,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:52,923 INFO L225 Difference]: With dead ends: 47696 [2021-12-28 02:28:52,923 INFO L226 Difference]: Without dead ends: 47694 [2021-12-28 02:28:52,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:28:52,942 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:52,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:52,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47694 states. [2021-12-28 02:28:55,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47694 to 28838. [2021-12-28 02:28:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28838 states, 28836 states have (on average 1.4578304896656957) internal successors, (42038), 28837 states have internal predecessors, (42038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28838 states to 28838 states and 42038 transitions. [2021-12-28 02:28:55,287 INFO L78 Accepts]: Start accepts. Automaton has 28838 states and 42038 transitions. Word has length 109 [2021-12-28 02:28:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:28:55,288 INFO L470 AbstractCegarLoop]: Abstraction has 28838 states and 42038 transitions. [2021-12-28 02:28:55,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 28838 states and 42038 transitions. [2021-12-28 02:28:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-28 02:28:55,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:28:55,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:28:55,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 02:28:55,290 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:28:55,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:28:55,290 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2021-12-28 02:28:55,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:28:55,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442416084] [2021-12-28 02:28:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:28:55,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:28:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:28:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:28:55,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:28:55,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442416084] [2021-12-28 02:28:55,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442416084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:28:55,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:28:55,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:28:55,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954772841] [2021-12-28 02:28:55,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:28:55,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:28:55,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:28:55,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:28:55,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:28:55,333 INFO L87 Difference]: Start difference. First operand 28838 states and 42038 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:28:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:28:58,227 INFO L93 Difference]: Finished difference Result 56493 states and 82492 transitions. [2021-12-28 02:28:58,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:28:58,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-12-28 02:28:58,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:28:58,282 INFO L225 Difference]: With dead ends: 56493 [2021-12-28 02:28:58,282 INFO L226 Difference]: Without dead ends: 41642 [2021-12-28 02:28:58,298 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 [2021-12-28 02:28:58,299 INFO L933 BasicCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:28:58,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:28:58,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41642 states. [2021-12-28 02:29:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41642 to 41640. [2021-12-28 02:29:01,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41640 states, 41638 states have (on average 1.4492530861232529) internal successors, (60344), 41639 states have internal predecessors, (60344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41640 states to 41640 states and 60344 transitions. [2021-12-28 02:29:01,498 INFO L78 Accepts]: Start accepts. Automaton has 41640 states and 60344 transitions. Word has length 110 [2021-12-28 02:29:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:01,498 INFO L470 AbstractCegarLoop]: Abstraction has 41640 states and 60344 transitions. [2021-12-28 02:29:01,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:01,498 INFO L276 IsEmpty]: Start isEmpty. Operand 41640 states and 60344 transitions. [2021-12-28 02:29:01,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-28 02:29:01,503 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:01,503 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, 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] [2021-12-28 02:29:01,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 02:29:01,504 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash -779373645, now seen corresponding path program 1 times [2021-12-28 02:29:01,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:01,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794547487] [2021-12-28 02:29:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:01,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:29:01,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:01,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794547487] [2021-12-28 02:29:01,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794547487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:01,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:01,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:29:01,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185415764] [2021-12-28 02:29:01,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:01,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:29:01,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:01,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:29:01,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:29:01,555 INFO L87 Difference]: Start difference. First operand 41640 states and 60344 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:29:07,229 INFO L93 Difference]: Finished difference Result 44648 states and 65176 transitions. [2021-12-28 02:29:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:29:07,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2021-12-28 02:29:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:29:07,280 INFO L225 Difference]: With dead ends: 44648 [2021-12-28 02:29:07,280 INFO L226 Difference]: Without dead ends: 43144 [2021-12-28 02:29:07,291 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 [2021-12-28 02:29:07,292 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 1105 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-28 02:29:07,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 773 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-28 02:29:07,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43144 states. [2021-12-28 02:29:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43144 to 43142. [2021-12-28 02:29:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43142 states, 43140 states have (on average 1.4444830783495595) internal successors, (62315), 43141 states have internal predecessors, (62315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43142 states to 43142 states and 62315 transitions. [2021-12-28 02:29:10,561 INFO L78 Accepts]: Start accepts. Automaton has 43142 states and 62315 transitions. Word has length 138 [2021-12-28 02:29:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:29:10,561 INFO L470 AbstractCegarLoop]: Abstraction has 43142 states and 62315 transitions. [2021-12-28 02:29:10,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:29:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 43142 states and 62315 transitions. [2021-12-28 02:29:10,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 02:29:10,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:29:10,577 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 02:29:10,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 02:29:10,577 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:29:10,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:29:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash 635734382, now seen corresponding path program 1 times [2021-12-28 02:29:10,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:29:10,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028463578] [2021-12-28 02:29:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:29:10,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:29:10,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:29:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 02:29:10,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:29:10,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028463578] [2021-12-28 02:29:10,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028463578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:29:10,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:29:10,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 02:29:10,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874904719] [2021-12-28 02:29:10,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:29:10,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 02:29:10,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:29:10,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 02:29:10,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-28 02:29:10,676 INFO L87 Difference]: Start difference. First operand 43142 states and 62315 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)