./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label03.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 3736b39782d33d69e49d45bc83c966fe9403fa4c46d3557706bbbfc10e7a8136 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:46:54,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:46:54,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:46:54,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:46:54,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:46:54,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:46:54,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:46:54,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:46:54,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:46:54,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:46:54,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:46:54,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:46:54,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:46:54,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:46:54,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:46:54,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:46:54,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:46:54,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:46:54,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:46:54,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:46:54,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:46:54,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:46:54,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:46:54,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:46:54,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:46:54,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:46:54,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:46:54,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:46:54,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:46:54,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:46:54,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:46:54,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:46:54,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:46:54,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:46:54,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:46:54,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:46:54,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:46:54,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:46:54,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:46:54,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:46:54,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:46:54,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:46:54,266 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:46:54,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:46:54,267 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:46:54,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:46:54,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:46:54,268 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:46:54,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:46:54,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:46:54,270 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:46:54,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:46:54,271 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:46:54,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:46:54,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:46:54,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:46:54,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:46:54,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:46:54,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:46:54,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:46:54,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:46:54,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:46:54,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:46:54,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:46:54,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:46:54,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:46:54,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:46:54,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:46:54,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:46:54,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:46:54,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:46:54,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:46:54,275 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:46:54,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:46:54,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:46:54,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:46:54,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3736b39782d33d69e49d45bc83c966fe9403fa4c46d3557706bbbfc10e7a8136 [2021-12-21 14:46:54,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:46:54,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:46:54,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:46:54,490 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:46:54,493 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:46:54,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label03.c [2021-12-21 14:46:54,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecc9b2b2/501e1bee03ee4ef89223d2a20b9c4252/FLAG6d93185bb [2021-12-21 14:46:55,143 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:46:55,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label03.c [2021-12-21 14:46:55,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecc9b2b2/501e1bee03ee4ef89223d2a20b9c4252/FLAG6d93185bb [2021-12-21 14:46:55,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cecc9b2b2/501e1bee03ee4ef89223d2a20b9c4252 [2021-12-21 14:46:55,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:46:55,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:46:55,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:46:55,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:46:55,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:46:55,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:46:55" (1/1) ... [2021-12-21 14:46:55,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@608a1d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:55, skipping insertion in model container [2021-12-21 14:46:55,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:46:55" (1/1) ... [2021-12-21 14:46:55,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:46:55,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:46:55,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label03.c[26860,26873] [2021-12-21 14:46:55,921 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label03.c[29197,29210] [2021-12-21 14:46:56,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:46:56,371 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:46:56,414 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label03.c[26860,26873] [2021-12-21 14:46:56,425 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label03.c[29197,29210] [2021-12-21 14:46:56,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:46:56,723 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:46:56,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56 WrapperNode [2021-12-21 14:46:56,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:46:56,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:46:56,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:46:56,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:46:56,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (1/1) ... [2021-12-21 14:46:56,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (1/1) ... [2021-12-21 14:46:56,974 INFO L137 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5281 [2021-12-21 14:46:56,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:46:56,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:46:56,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:46:56,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:46:56,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (1/1) ... [2021-12-21 14:46:56,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (1/1) ... [2021-12-21 14:46:57,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (1/1) ... [2021-12-21 14:46:57,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (1/1) ... [2021-12-21 14:46:57,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (1/1) ... [2021-12-21 14:46:57,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (1/1) ... [2021-12-21 14:46:57,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (1/1) ... [2021-12-21 14:46:57,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:46:57,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:46:57,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:46:57,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:46:57,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (1/1) ... [2021-12-21 14:46:57,373 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:46:57,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:46:57,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 14:46:57,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 14:46:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:46:57,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:46:57,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:46:57,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:46:57,668 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:46:57,670 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:47:00,490 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:47:00,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:47:00,500 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 14:47:00,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:47:00 BoogieIcfgContainer [2021-12-21 14:47:00,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:47:00,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:47:00,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:47:00,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:47:00,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:46:55" (1/3) ... [2021-12-21 14:47:00,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f234105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:47:00, skipping insertion in model container [2021-12-21 14:47:00,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:46:56" (2/3) ... [2021-12-21 14:47:00,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f234105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:47:00, skipping insertion in model container [2021-12-21 14:47:00,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:47:00" (3/3) ... [2021-12-21 14:47:00,508 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label03.c [2021-12-21 14:47:00,511 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:47:00,511 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:47:00,543 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:47:00,547 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:47:00,547 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:47:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:00,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 14:47:00,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:00,570 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] [2021-12-21 14:47:00,571 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:00,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash 193046949, now seen corresponding path program 1 times [2021-12-21 14:47:00,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:00,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80411542] [2021-12-21 14:47:00,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:00,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:00,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:00,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80411542] [2021-12-21 14:47:00,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80411542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:00,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:00,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:47:00,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831028206] [2021-12-21 14:47:00,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:00,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:00,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:00,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:00,748 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:03,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:03,574 INFO L93 Difference]: Finished difference Result 2630 states and 5030 transitions. [2021-12-21 14:47:03,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:03,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-12-21 14:47:03,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:03,595 INFO L225 Difference]: With dead ends: 2630 [2021-12-21 14:47:03,596 INFO L226 Difference]: Without dead ends: 1648 [2021-12-21 14:47:03,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:03,604 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 1053 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:03,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 779 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-21 14:47:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-12-21 14:47:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2021-12-21 14:47:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.620291616038882) internal successors, (2667), 1647 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2667 transitions. [2021-12-21 14:47:03,696 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2667 transitions. Word has length 20 [2021-12-21 14:47:03,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:03,696 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 2667 transitions. [2021-12-21 14:47:03,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:03,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2667 transitions. [2021-12-21 14:47:03,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-21 14:47:03,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:03,699 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] [2021-12-21 14:47:03,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:47:03,699 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:03,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:03,700 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2021-12-21 14:47:03,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:03,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588613153] [2021-12-21 14:47:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:03,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:03,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:03,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588613153] [2021-12-21 14:47:03,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588613153] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:03,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:03,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:47:03,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856507728] [2021-12-21 14:47:03,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:03,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:47:03,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:03,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:47:03,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:47:03,771 INFO L87 Difference]: Start difference. First operand 1648 states and 2667 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) [2021-12-21 14:47:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:03,841 INFO L93 Difference]: Finished difference Result 1728 states and 2792 transitions. [2021-12-21 14:47:03,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 14:47:03,841 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 [2021-12-21 14:47:03,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:03,846 INFO L225 Difference]: With dead ends: 1728 [2021-12-21 14:47:03,846 INFO L226 Difference]: Without dead ends: 1648 [2021-12-21 14:47:03,847 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 [2021-12-21 14:47:03,848 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:03,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:03,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-12-21 14:47:03,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2021-12-21 14:47:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.583232077764277) internal successors, (2606), 1647 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:03,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2606 transitions. [2021-12-21 14:47:03,876 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2606 transitions. Word has length 46 [2021-12-21 14:47:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:03,876 INFO L470 AbstractCegarLoop]: Abstraction has 1648 states and 2606 transitions. [2021-12-21 14:47:03,877 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) [2021-12-21 14:47:03,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2606 transitions. [2021-12-21 14:47:03,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-21 14:47:03,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:03,880 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:03,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:47:03,880 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:03,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:03,881 INFO L85 PathProgramCache]: Analyzing trace with hash -786269897, now seen corresponding path program 1 times [2021-12-21 14:47:03,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:03,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464086022] [2021-12-21 14:47:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:03,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:03,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:03,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464086022] [2021-12-21 14:47:03,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464086022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:03,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:03,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:47:03,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888853795] [2021-12-21 14:47:03,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:03,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:03,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:03,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:03,989 INFO L87 Difference]: Start difference. First operand 1648 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:06,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:06,399 INFO L93 Difference]: Finished difference Result 4654 states and 7437 transitions. [2021-12-21 14:47:06,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:06,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-21 14:47:06,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:06,409 INFO L225 Difference]: With dead ends: 4654 [2021-12-21 14:47:06,409 INFO L226 Difference]: Without dead ends: 3150 [2021-12-21 14:47:06,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:06,416 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 961 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:06,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [961 Valid, 637 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-21 14:47:06,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2021-12-21 14:47:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 3150. [2021-12-21 14:47:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 3148 states have (on average 1.412007623888183) internal successors, (4445), 3149 states have internal predecessors, (4445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:06,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4445 transitions. [2021-12-21 14:47:06,466 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4445 transitions. Word has length 95 [2021-12-21 14:47:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:06,467 INFO L470 AbstractCegarLoop]: Abstraction has 3150 states and 4445 transitions. [2021-12-21 14:47:06,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4445 transitions. [2021-12-21 14:47:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 14:47:06,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:06,472 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:06,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:47:06,472 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:06,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:06,473 INFO L85 PathProgramCache]: Analyzing trace with hash 202501084, now seen corresponding path program 1 times [2021-12-21 14:47:06,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:06,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097777608] [2021-12-21 14:47:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:06,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:06,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:06,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097777608] [2021-12-21 14:47:06,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097777608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:06,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:06,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:47:06,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494731932] [2021-12-21 14:47:06,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:06,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:06,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:06,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:06,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:06,607 INFO L87 Difference]: Start difference. First operand 3150 states and 4445 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:09,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:09,070 INFO L93 Difference]: Finished difference Result 9162 states and 12955 transitions. [2021-12-21 14:47:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:09,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-12-21 14:47:09,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:09,087 INFO L225 Difference]: With dead ends: 9162 [2021-12-21 14:47:09,087 INFO L226 Difference]: Without dead ends: 6156 [2021-12-21 14:47:09,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:09,092 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 1101 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:09,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 540 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:47:09,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2021-12-21 14:47:09,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 6154. [2021-12-21 14:47:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 6152 states have (on average 1.296001300390117) internal successors, (7973), 6153 states have internal predecessors, (7973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 7973 transitions. [2021-12-21 14:47:09,179 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 7973 transitions. Word has length 97 [2021-12-21 14:47:09,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:09,179 INFO L470 AbstractCegarLoop]: Abstraction has 6154 states and 7973 transitions. [2021-12-21 14:47:09,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:09,180 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 7973 transitions. [2021-12-21 14:47:09,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 14:47:09,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:09,181 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] [2021-12-21 14:47:09,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:47:09,181 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:09,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:09,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2021-12-21 14:47:09,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:09,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085517480] [2021-12-21 14:47:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:09,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:09,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:09,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:09,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085517480] [2021-12-21 14:47:09,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085517480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:09,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:09,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:09,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821876996] [2021-12-21 14:47:09,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:09,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:09,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:09,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:09,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:09,232 INFO L87 Difference]: Start difference. First operand 6154 states and 7973 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) [2021-12-21 14:47:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:09,265 INFO L93 Difference]: Finished difference Result 6300 states and 8205 transitions. [2021-12-21 14:47:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:09,266 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 [2021-12-21 14:47:09,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:09,283 INFO L225 Difference]: With dead ends: 6300 [2021-12-21 14:47:09,283 INFO L226 Difference]: Without dead ends: 6224 [2021-12-21 14:47:09,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:09,287 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:09,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6224 states. [2021-12-21 14:47:09,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6224 to 6222. [2021-12-21 14:47:09,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6222 states, 6220 states have (on average 1.2993569131832798) internal successors, (8082), 6221 states have internal predecessors, (8082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6222 states to 6222 states and 8082 transitions. [2021-12-21 14:47:09,385 INFO L78 Accepts]: Start accepts. Automaton has 6222 states and 8082 transitions. Word has length 106 [2021-12-21 14:47:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:09,388 INFO L470 AbstractCegarLoop]: Abstraction has 6222 states and 8082 transitions. [2021-12-21 14:47:09,388 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) [2021-12-21 14:47:09,388 INFO L276 IsEmpty]: Start isEmpty. Operand 6222 states and 8082 transitions. [2021-12-21 14:47:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 14:47:09,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:09,392 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] [2021-12-21 14:47:09,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:47:09,393 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:09,397 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2021-12-21 14:47:09,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:09,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966472438] [2021-12-21 14:47:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:09,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:09,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:09,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:09,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966472438] [2021-12-21 14:47:09,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966472438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:09,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:09,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:09,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680468745] [2021-12-21 14:47:09,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:09,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:09,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:09,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:09,486 INFO L87 Difference]: Start difference. First operand 6222 states and 8082 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) [2021-12-21 14:47:09,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:09,522 INFO L93 Difference]: Finished difference Result 6498 states and 8522 transitions. [2021-12-21 14:47:09,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:09,523 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 [2021-12-21 14:47:09,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:09,546 INFO L225 Difference]: With dead ends: 6498 [2021-12-21 14:47:09,547 INFO L226 Difference]: Without dead ends: 6354 [2021-12-21 14:47:09,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:09,552 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:09,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6354 states. [2021-12-21 14:47:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6354 to 6352. [2021-12-21 14:47:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6352 states, 6350 states have (on average 1.3053543307086615) internal successors, (8289), 6351 states have internal predecessors, (8289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6352 states to 6352 states and 8289 transitions. [2021-12-21 14:47:09,704 INFO L78 Accepts]: Start accepts. Automaton has 6352 states and 8289 transitions. Word has length 106 [2021-12-21 14:47:09,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:09,705 INFO L470 AbstractCegarLoop]: Abstraction has 6352 states and 8289 transitions. [2021-12-21 14:47:09,705 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) [2021-12-21 14:47:09,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6352 states and 8289 transitions. [2021-12-21 14:47:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 14:47:09,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:09,706 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] [2021-12-21 14:47:09,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:47:09,707 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2021-12-21 14:47:09,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:09,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44877444] [2021-12-21 14:47:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:09,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:09,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:09,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44877444] [2021-12-21 14:47:09,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44877444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:09,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:09,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:09,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757364566] [2021-12-21 14:47:09,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:09,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:09,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:09,771 INFO L87 Difference]: Start difference. First operand 6352 states and 8289 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) [2021-12-21 14:47:09,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:09,817 INFO L93 Difference]: Finished difference Result 6876 states and 9123 transitions. [2021-12-21 14:47:09,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:09,817 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 [2021-12-21 14:47:09,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:09,834 INFO L225 Difference]: With dead ends: 6876 [2021-12-21 14:47:09,834 INFO L226 Difference]: Without dead ends: 6602 [2021-12-21 14:47:09,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:09,837 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:09,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2021-12-21 14:47:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 6600. [2021-12-21 14:47:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6600 states, 6598 states have (on average 1.315701727796302) internal successors, (8681), 6599 states have internal predecessors, (8681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 8681 transitions. [2021-12-21 14:47:09,937 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 8681 transitions. Word has length 106 [2021-12-21 14:47:09,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:09,937 INFO L470 AbstractCegarLoop]: Abstraction has 6600 states and 8681 transitions. [2021-12-21 14:47:09,937 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) [2021-12-21 14:47:09,937 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 8681 transitions. [2021-12-21 14:47:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 14:47:09,938 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:09,938 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] [2021-12-21 14:47:09,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:47:09,938 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:09,940 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2021-12-21 14:47:09,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:09,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164627919] [2021-12-21 14:47:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:09,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:09,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:09,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164627919] [2021-12-21 14:47:09,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164627919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:09,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:09,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:09,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861280236] [2021-12-21 14:47:09,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:09,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:09,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:09,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:09,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:09,983 INFO L87 Difference]: Start difference. First operand 6600 states and 8681 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) [2021-12-21 14:47:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:10,029 INFO L93 Difference]: Finished difference Result 7596 states and 10259 transitions. [2021-12-21 14:47:10,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:10,030 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 [2021-12-21 14:47:10,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:10,039 INFO L225 Difference]: With dead ends: 7596 [2021-12-21 14:47:10,040 INFO L226 Difference]: Without dead ends: 7074 [2021-12-21 14:47:10,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:10,042 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:10,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7074 states. [2021-12-21 14:47:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7074 to 7072. [2021-12-21 14:47:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7072 states, 7070 states have (on average 1.3325318246110325) internal successors, (9421), 7071 states have internal predecessors, (9421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7072 states to 7072 states and 9421 transitions. [2021-12-21 14:47:10,139 INFO L78 Accepts]: Start accepts. Automaton has 7072 states and 9421 transitions. Word has length 106 [2021-12-21 14:47:10,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:10,139 INFO L470 AbstractCegarLoop]: Abstraction has 7072 states and 9421 transitions. [2021-12-21 14:47:10,139 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) [2021-12-21 14:47:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7072 states and 9421 transitions. [2021-12-21 14:47:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 14:47:10,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:10,140 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] [2021-12-21 14:47:10,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:47:10,141 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:10,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2021-12-21 14:47:10,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:10,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041064767] [2021-12-21 14:47:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:10,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:10,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:10,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041064767] [2021-12-21 14:47:10,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041064767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:10,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:10,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 14:47:10,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701471986] [2021-12-21 14:47:10,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:10,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 14:47:10,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:10,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 14:47:10,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-21 14:47:10,223 INFO L87 Difference]: Start difference. First operand 7072 states and 9421 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) [2021-12-21 14:47:11,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:11,021 INFO L93 Difference]: Finished difference Result 22976 states and 34525 transitions. [2021-12-21 14:47:11,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 14:47:11,021 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 [2021-12-21 14:47:11,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:11,052 INFO L225 Difference]: With dead ends: 22976 [2021-12-21 14:47:11,052 INFO L226 Difference]: Without dead ends: 21982 [2021-12-21 14:47:11,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-21 14:47:11,061 INFO L933 BasicCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:11,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 14:47:11,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21982 states. [2021-12-21 14:47:11,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21982 to 8064. [2021-12-21 14:47:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8064 states, 8062 states have (on average 1.3590920367154553) internal successors, (10957), 8063 states have internal predecessors, (10957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:11,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8064 states to 8064 states and 10957 transitions. [2021-12-21 14:47:11,372 INFO L78 Accepts]: Start accepts. Automaton has 8064 states and 10957 transitions. Word has length 106 [2021-12-21 14:47:11,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:11,373 INFO L470 AbstractCegarLoop]: Abstraction has 8064 states and 10957 transitions. [2021-12-21 14:47:11,373 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) [2021-12-21 14:47:11,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8064 states and 10957 transitions. [2021-12-21 14:47:11,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:11,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:11,374 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] [2021-12-21 14:47:11,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:47:11,377 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:11,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:11,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2021-12-21 14:47:11,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:11,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960654491] [2021-12-21 14:47:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:11,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:11,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:11,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960654491] [2021-12-21 14:47:11,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960654491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:11,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:11,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:11,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509387170] [2021-12-21 14:47:11,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:11,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:11,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:11,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:11,426 INFO L87 Difference]: Start difference. First operand 8064 states and 10957 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) [2021-12-21 14:47:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:11,599 INFO L93 Difference]: Finished difference Result 11006 states and 15553 transitions. [2021-12-21 14:47:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:11,599 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 [2021-12-21 14:47:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:11,610 INFO L225 Difference]: With dead ends: 11006 [2021-12-21 14:47:11,610 INFO L226 Difference]: Without dead ends: 9020 [2021-12-21 14:47:11,613 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 [2021-12-21 14:47:11,614 INFO L933 BasicCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:11,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9020 states. [2021-12-21 14:47:11,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9020 to 9018. [2021-12-21 14:47:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9018 states, 9016 states have (on average 1.3778837622005324) internal successors, (12423), 9017 states have internal predecessors, (12423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9018 states to 9018 states and 12423 transitions. [2021-12-21 14:47:11,813 INFO L78 Accepts]: Start accepts. Automaton has 9018 states and 12423 transitions. Word has length 108 [2021-12-21 14:47:11,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:11,814 INFO L470 AbstractCegarLoop]: Abstraction has 9018 states and 12423 transitions. [2021-12-21 14:47:11,814 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) [2021-12-21 14:47:11,814 INFO L276 IsEmpty]: Start isEmpty. Operand 9018 states and 12423 transitions. [2021-12-21 14:47:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:11,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:11,815 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] [2021-12-21 14:47:11,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:47:11,816 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2021-12-21 14:47:11,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:11,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728218865] [2021-12-21 14:47:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:11,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:12,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:12,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728218865] [2021-12-21 14:47:12,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728218865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:12,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:12,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 14:47:12,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716590584] [2021-12-21 14:47:12,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:12,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 14:47:12,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:12,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 14:47:12,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-21 14:47:12,039 INFO L87 Difference]: Start difference. First operand 9018 states and 12423 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) [2021-12-21 14:47:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:12,571 INFO L93 Difference]: Finished difference Result 11958 states and 16993 transitions. [2021-12-21 14:47:12,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:47:12,572 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 [2021-12-21 14:47:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:12,583 INFO L225 Difference]: With dead ends: 11958 [2021-12-21 14:47:12,583 INFO L226 Difference]: Without dead ends: 9020 [2021-12-21 14:47:12,587 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 [2021-12-21 14:47:12,587 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 12686 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12686 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:12,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12686 Valid, 2487 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 14:47:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9020 states. [2021-12-21 14:47:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9020 to 9018. [2021-12-21 14:47:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9018 states, 9016 states have (on average 1.3752218278615793) internal successors, (12399), 9017 states have internal predecessors, (12399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9018 states to 9018 states and 12399 transitions. [2021-12-21 14:47:12,867 INFO L78 Accepts]: Start accepts. Automaton has 9018 states and 12399 transitions. Word has length 108 [2021-12-21 14:47:12,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:12,867 INFO L470 AbstractCegarLoop]: Abstraction has 9018 states and 12399 transitions. [2021-12-21 14:47:12,867 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) [2021-12-21 14:47:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9018 states and 12399 transitions. [2021-12-21 14:47:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:12,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:12,868 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] [2021-12-21 14:47:12,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:47:12,869 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:12,869 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2021-12-21 14:47:12,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:12,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634467336] [2021-12-21 14:47:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:12,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:12,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:12,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634467336] [2021-12-21 14:47:12,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634467336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:12,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:12,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:12,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204642492] [2021-12-21 14:47:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:12,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:12,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:12,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:12,914 INFO L87 Difference]: Start difference. First operand 9018 states and 12399 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) [2021-12-21 14:47:13,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:13,238 INFO L93 Difference]: Finished difference Result 14606 states and 21009 transitions. [2021-12-21 14:47:13,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:13,239 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 [2021-12-21 14:47:13,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:13,254 INFO L225 Difference]: With dead ends: 14606 [2021-12-21 14:47:13,255 INFO L226 Difference]: Without dead ends: 11668 [2021-12-21 14:47:13,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:13,258 INFO L933 BasicCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:13,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:13,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11668 states. [2021-12-21 14:47:13,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11668 to 11666. [2021-12-21 14:47:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11666 states, 11664 states have (on average 1.4073216735253773) internal successors, (16415), 11665 states have internal predecessors, (16415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11666 states to 11666 states and 16415 transitions. [2021-12-21 14:47:13,640 INFO L78 Accepts]: Start accepts. Automaton has 11666 states and 16415 transitions. Word has length 108 [2021-12-21 14:47:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:13,641 INFO L470 AbstractCegarLoop]: Abstraction has 11666 states and 16415 transitions. [2021-12-21 14:47:13,641 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) [2021-12-21 14:47:13,641 INFO L276 IsEmpty]: Start isEmpty. Operand 11666 states and 16415 transitions. [2021-12-21 14:47:13,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:13,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:13,642 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] [2021-12-21 14:47:13,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 14:47:13,642 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:13,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:13,643 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2021-12-21 14:47:13,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:13,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586470964] [2021-12-21 14:47:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:13,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:13,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:13,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586470964] [2021-12-21 14:47:13,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586470964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:13,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:13,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:13,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558480316] [2021-12-21 14:47:13,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:13,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:13,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:13,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:13,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:13,712 INFO L87 Difference]: Start difference. First operand 11666 states and 16415 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) [2021-12-21 14:47:14,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:14,394 INFO L93 Difference]: Finished difference Result 22262 states and 32577 transitions. [2021-12-21 14:47:14,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:14,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-12-21 14:47:14,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:14,417 INFO L225 Difference]: With dead ends: 22262 [2021-12-21 14:47:14,417 INFO L226 Difference]: Without dead ends: 16676 [2021-12-21 14:47:14,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:14,427 INFO L933 BasicCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:14,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:14,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16676 states. [2021-12-21 14:47:15,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16676 to 16674. [2021-12-21 14:47:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16674 states, 16672 states have (on average 1.4346809021113245) internal successors, (23919), 16673 states have internal predecessors, (23919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:15,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16674 states to 16674 states and 23919 transitions. [2021-12-21 14:47:15,214 INFO L78 Accepts]: Start accepts. Automaton has 16674 states and 23919 transitions. Word has length 108 [2021-12-21 14:47:15,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:15,215 INFO L470 AbstractCegarLoop]: Abstraction has 16674 states and 23919 transitions. [2021-12-21 14:47:15,215 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) [2021-12-21 14:47:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 16674 states and 23919 transitions. [2021-12-21 14:47:15,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:15,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:15,216 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] [2021-12-21 14:47:15,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 14:47:15,216 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:15,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:15,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2021-12-21 14:47:15,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:15,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005722461] [2021-12-21 14:47:15,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:15,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:15,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:15,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005722461] [2021-12-21 14:47:15,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005722461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:15,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:15,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:15,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517436244] [2021-12-21 14:47:15,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:15,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:15,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:15,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:15,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:15,254 INFO L87 Difference]: Start difference. First operand 16674 states and 23919 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) [2021-12-21 14:47:16,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:16,443 INFO L93 Difference]: Finished difference Result 36710 states and 54129 transitions. [2021-12-21 14:47:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:16,444 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 [2021-12-21 14:47:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:16,488 INFO L225 Difference]: With dead ends: 36710 [2021-12-21 14:47:16,488 INFO L226 Difference]: Without dead ends: 26116 [2021-12-21 14:47:16,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:16,502 INFO L933 BasicCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:16,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:16,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26116 states. [2021-12-21 14:47:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26116 to 26114. [2021-12-21 14:47:17,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26114 states, 26112 states have (on average 1.4503293504901962) internal successors, (37871), 26113 states have internal predecessors, (37871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26114 states to 26114 states and 37871 transitions. [2021-12-21 14:47:17,841 INFO L78 Accepts]: Start accepts. Automaton has 26114 states and 37871 transitions. Word has length 108 [2021-12-21 14:47:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:17,841 INFO L470 AbstractCegarLoop]: Abstraction has 26114 states and 37871 transitions. [2021-12-21 14:47:17,841 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) [2021-12-21 14:47:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 26114 states and 37871 transitions. [2021-12-21 14:47:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-21 14:47:17,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:17,842 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] [2021-12-21 14:47:17,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 14:47:17,843 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:17,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:17,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2021-12-21 14:47:17,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:17,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841275810] [2021-12-21 14:47:17,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:17,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:17,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:17,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841275810] [2021-12-21 14:47:17,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841275810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:17,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:17,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:47:17,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584358172] [2021-12-21 14:47:17,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:17,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:47:17,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:47:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:17,880 INFO L87 Difference]: Start difference. First operand 26114 states and 37871 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) [2021-12-21 14:47:20,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:20,302 INFO L93 Difference]: Finished difference Result 63878 states and 94065 transitions. [2021-12-21 14:47:20,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:47:20,303 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 [2021-12-21 14:47:20,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:20,363 INFO L225 Difference]: With dead ends: 63878 [2021-12-21 14:47:20,363 INFO L226 Difference]: Without dead ends: 43844 [2021-12-21 14:47:20,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:47:20,388 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:20,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43844 states. [2021-12-21 14:47:22,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43844 to 43842. [2021-12-21 14:47:22,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43842 states, 43840 states have (on average 1.4521669708029197) internal successors, (63663), 43841 states have internal predecessors, (63663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43842 states to 43842 states and 63663 transitions. [2021-12-21 14:47:22,987 INFO L78 Accepts]: Start accepts. Automaton has 43842 states and 63663 transitions. Word has length 108 [2021-12-21 14:47:22,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:22,987 INFO L470 AbstractCegarLoop]: Abstraction has 43842 states and 63663 transitions. [2021-12-21 14:47:22,988 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) [2021-12-21 14:47:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 43842 states and 63663 transitions. [2021-12-21 14:47:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-21 14:47:22,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:22,988 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] [2021-12-21 14:47:22,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 14:47:22,989 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:22,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2021-12-21 14:47:22,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:22,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327625210] [2021-12-21 14:47:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:22,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:47:23,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:23,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327625210] [2021-12-21 14:47:23,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327625210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:23,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:23,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:47:23,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366808854] [2021-12-21 14:47:23,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:23,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:47:23,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:47:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:47:23,045 INFO L87 Difference]: Start difference. First operand 43842 states and 63663 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) [2021-12-21 14:47:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:47:27,757 INFO L93 Difference]: Finished difference Result 76009 states and 110240 transitions. [2021-12-21 14:47:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:47:27,758 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 [2021-12-21 14:47:27,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:47:27,876 INFO L225 Difference]: With dead ends: 76009 [2021-12-21 14:47:27,876 INFO L226 Difference]: Without dead ends: 76007 [2021-12-21 14:47:27,895 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 [2021-12-21 14:47:27,896 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:47:27,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:47:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76007 states. [2021-12-21 14:47:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76007 to 45378. [2021-12-21 14:47:31,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45378 states, 45376 states have (on average 1.4340400211565585) internal successors, (65071), 45377 states have internal predecessors, (65071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:47:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45378 states to 45378 states and 65071 transitions. [2021-12-21 14:47:31,923 INFO L78 Accepts]: Start accepts. Automaton has 45378 states and 65071 transitions. Word has length 109 [2021-12-21 14:47:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:47:31,924 INFO L470 AbstractCegarLoop]: Abstraction has 45378 states and 65071 transitions. [2021-12-21 14:47:31,924 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) [2021-12-21 14:47:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 45378 states and 65071 transitions. [2021-12-21 14:47:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-21 14:47:31,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:47:31,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:47:31,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 14:47:31,947 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:47:31,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:47:31,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2021-12-21 14:47:31,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:47:31,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843232806] [2021-12-21 14:47:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:47:31,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:47:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:47:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 14:47:32,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:47:32,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843232806] [2021-12-21 14:47:32,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843232806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:47:32,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:47:32,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 14:47:32,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411060737] [2021-12-21 14:47:32,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:47:32,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 14:47:32,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:47:32,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 14:47:32,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-21 14:47:32,071 INFO L87 Difference]: Start difference. First operand 45378 states and 65071 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)