./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.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 62ecd4a1c0175e4266d81bf4dd40d6ccadaa828b1b1cbafedab9341484ceff48 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:26:04,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:26:04,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:26:04,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:26:04,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:26:04,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:26:04,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:26:04,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:26:04,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:26:04,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:26:04,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:26:04,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:26:04,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:26:04,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:26:04,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:26:04,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:26:04,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:26:04,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:26:04,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:26:04,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:26:04,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:26:04,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:26:04,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:26:04,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:26:04,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:26:04,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:26:04,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:26:04,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:26:04,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:26:04,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:26:04,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:26:04,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:26:04,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:26:04,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:26:04,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:26:04,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:26:04,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:26:04,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:26:04,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:26:04,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:26:04,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:26:04,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:26:04,270 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:26:04,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:26:04,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:26:04,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:26:04,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:26:04,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:26:04,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:26:04,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:26:04,274 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:26:04,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:26:04,275 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:26:04,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:26:04,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:26:04,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:26:04,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:26:04,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:26:04,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:26:04,276 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:26:04,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:26:04,276 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:26:04,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:26:04,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:26:04,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:26:04,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:26:04,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:26:04,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:26:04,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:26:04,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:26:04,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:26:04,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:26:04,278 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:26:04,278 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:26:04,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:26:04,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:26:04,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62ecd4a1c0175e4266d81bf4dd40d6ccadaa828b1b1cbafedab9341484ceff48 [2021-12-14 15:26:04,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:26:04,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:26:04,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:26:04,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:26:04,473 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:26:04,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-12-14 15:26:04,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f41efc5/0e58fefa902749859336615732857d0a/FLAGf20222a19 [2021-12-14 15:26:05,322 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:26:05,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-12-14 15:26:05,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f41efc5/0e58fefa902749859336615732857d0a/FLAGf20222a19 [2021-12-14 15:26:05,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05f41efc5/0e58fefa902749859336615732857d0a [2021-12-14 15:26:05,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:26:05,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:26:05,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:26:05,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:26:05,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:26:05,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:26:05" (1/1) ... [2021-12-14 15:26:05,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da37177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:05, skipping insertion in model container [2021-12-14 15:26:05,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:26:05" (1/1) ... [2021-12-14 15:26:05,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:26:05,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:26:06,463 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/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[40670,40683] [2021-12-14 15:26:08,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:26:08,646 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:26:08,872 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/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[40670,40683] [2021-12-14 15:26:10,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:26:10,407 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:26:10,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10 WrapperNode [2021-12-14 15:26:10,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:26:10,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:26:10,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:26:10,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:26:10,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (1/1) ... [2021-12-14 15:26:10,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (1/1) ... [2021-12-14 15:26:10,708 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22651 [2021-12-14 15:26:10,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:26:10,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:26:10,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:26:10,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:26:10,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (1/1) ... [2021-12-14 15:26:10,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (1/1) ... [2021-12-14 15:26:10,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (1/1) ... [2021-12-14 15:26:10,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (1/1) ... [2021-12-14 15:26:10,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (1/1) ... [2021-12-14 15:26:11,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (1/1) ... [2021-12-14 15:26:11,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (1/1) ... [2021-12-14 15:26:11,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:26:11,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:26:11,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:26:11,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:26:11,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (1/1) ... [2021-12-14 15:26:11,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:26:11,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:26:11,281 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) [2021-12-14 15:26:11,339 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 [2021-12-14 15:26:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:26:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:26:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:26:11,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:26:11,735 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:26:11,736 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:26:19,341 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:26:19,362 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:26:19,362 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 15:26:19,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:26:19 BoogieIcfgContainer [2021-12-14 15:26:19,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:26:19,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:26:19,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:26:19,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:26:19,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:26:05" (1/3) ... [2021-12-14 15:26:19,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232a6ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:26:19, skipping insertion in model container [2021-12-14 15:26:19,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:26:10" (2/3) ... [2021-12-14 15:26:19,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232a6ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:26:19, skipping insertion in model container [2021-12-14 15:26:19,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:26:19" (3/3) ... [2021-12-14 15:26:19,374 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-12-14 15:26:19,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:26:19,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 15:26:19,421 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:26:19,429 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 [2021-12-14 15:26:19,430 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 15:26:19,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 6849 states, 6847 states have (on average 1.750109537023514) internal successors, (11983), 6848 states have internal predecessors, (11983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:19,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-12-14 15:26:19,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:19,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:19,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:19,671 INFO L85 PathProgramCache]: Analyzing trace with hash 579486765, now seen corresponding path program 1 times [2021-12-14 15:26:19,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:19,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119531528] [2021-12-14 15:26:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:19,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:20,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:20,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119531528] [2021-12-14 15:26:20,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119531528] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:20,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:20,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:26:20,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229418987] [2021-12-14 15:26:20,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:20,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:26:20,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:20,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:26:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:26:20,211 INFO L87 Difference]: Start difference. First operand has 6849 states, 6847 states have (on average 1.750109537023514) internal successors, (11983), 6848 states have internal predecessors, (11983), 0 states have call successors, (0), 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 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:20,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:20,528 INFO L93 Difference]: Finished difference Result 13635 states and 23632 transitions. [2021-12-14 15:26:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:26:20,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2021-12-14 15:26:20,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:20,565 INFO L225 Difference]: With dead ends: 13635 [2021-12-14 15:26:20,565 INFO L226 Difference]: Without dead ends: 8146 [2021-12-14 15:26:20,578 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 [2021-12-14 15:26:20,580 INFO L933 BasicCegarLoop]: 12800 mSDtfsCounter, 8076 mSDsluCounter, 6010 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8076 SdHoareTripleChecker+Valid, 18810 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:20,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8076 Valid, 18810 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:26:20,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2021-12-14 15:26:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 8144. [2021-12-14 15:26:20,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8144 states, 8143 states have (on average 1.6740758934053788) internal successors, (13632), 8143 states have internal predecessors, (13632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8144 states to 8144 states and 13632 transitions. [2021-12-14 15:26:20,809 INFO L78 Accepts]: Start accepts. Automaton has 8144 states and 13632 transitions. Word has length 388 [2021-12-14 15:26:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:20,810 INFO L470 AbstractCegarLoop]: Abstraction has 8144 states and 13632 transitions. [2021-12-14 15:26:20,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8144 states and 13632 transitions. [2021-12-14 15:26:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-12-14 15:26:20,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:20,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:20,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:26:20,844 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2020212822, now seen corresponding path program 1 times [2021-12-14 15:26:20,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:20,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131207745] [2021-12-14 15:26:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:20,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:21,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:21,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131207745] [2021-12-14 15:26:21,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131207745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:21,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:21,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:26:21,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053215162] [2021-12-14 15:26:21,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:21,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:26:21,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:21,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:26:21,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:26:21,030 INFO L87 Difference]: Start difference. First operand 8144 states and 13632 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:21,620 INFO L93 Difference]: Finished difference Result 17753 states and 29829 transitions. [2021-12-14 15:26:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:26:21,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2021-12-14 15:26:21,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:21,661 INFO L225 Difference]: With dead ends: 17753 [2021-12-14 15:26:21,661 INFO L226 Difference]: Without dead ends: 10791 [2021-12-14 15:26:21,676 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 [2021-12-14 15:26:21,678 INFO L933 BasicCegarLoop]: 12905 mSDtfsCounter, 6889 mSDsluCounter, 5973 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6889 SdHoareTripleChecker+Valid, 18878 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:21,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6889 Valid, 18878 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:26:21,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2021-12-14 15:26:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 10789. [2021-12-14 15:26:21,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10789 states, 10788 states have (on average 1.6719503151649981) internal successors, (18037), 10788 states have internal predecessors, (18037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:21,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10789 states to 10789 states and 18037 transitions. [2021-12-14 15:26:21,964 INFO L78 Accepts]: Start accepts. Automaton has 10789 states and 18037 transitions. Word has length 388 [2021-12-14 15:26:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:21,964 INFO L470 AbstractCegarLoop]: Abstraction has 10789 states and 18037 transitions. [2021-12-14 15:26:21,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 10789 states and 18037 transitions. [2021-12-14 15:26:21,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-12-14 15:26:21,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:21,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:21,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:26:21,988 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:21,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:21,989 INFO L85 PathProgramCache]: Analyzing trace with hash -502292862, now seen corresponding path program 1 times [2021-12-14 15:26:21,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:21,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522246254] [2021-12-14 15:26:21,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:21,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:22,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:22,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522246254] [2021-12-14 15:26:22,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522246254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:22,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:22,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:26:22,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938720872] [2021-12-14 15:26:22,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:22,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:26:22,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:22,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:26:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:26:22,286 INFO L87 Difference]: Start difference. First operand 10789 states and 18037 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:22,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:22,709 INFO L93 Difference]: Finished difference Result 19123 states and 32023 transitions. [2021-12-14 15:26:22,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:26:22,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2021-12-14 15:26:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:22,751 INFO L225 Difference]: With dead ends: 19123 [2021-12-14 15:26:22,751 INFO L226 Difference]: Without dead ends: 16693 [2021-12-14 15:26:22,762 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 [2021-12-14 15:26:22,763 INFO L933 BasicCegarLoop]: 9794 mSDtfsCounter, 6710 mSDsluCounter, 6649 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6710 SdHoareTripleChecker+Valid, 16443 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:22,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6710 Valid, 16443 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:26:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16693 states. [2021-12-14 15:26:23,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16693 to 16691. [2021-12-14 15:26:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16691 states, 16690 states have (on average 1.6718993409227083) internal successors, (27904), 16690 states have internal predecessors, (27904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16691 states to 16691 states and 27904 transitions. [2021-12-14 15:26:23,181 INFO L78 Accepts]: Start accepts. Automaton has 16691 states and 27904 transitions. Word has length 388 [2021-12-14 15:26:23,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:23,182 INFO L470 AbstractCegarLoop]: Abstraction has 16691 states and 27904 transitions. [2021-12-14 15:26:23,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:23,182 INFO L276 IsEmpty]: Start isEmpty. Operand 16691 states and 27904 transitions. [2021-12-14 15:26:23,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-12-14 15:26:23,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:23,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:23,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:26:23,216 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:23,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:23,217 INFO L85 PathProgramCache]: Analyzing trace with hash -913903934, now seen corresponding path program 1 times [2021-12-14 15:26:23,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:23,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237580581] [2021-12-14 15:26:23,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:23,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:23,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:23,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237580581] [2021-12-14 15:26:23,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237580581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:23,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:23,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:26:23,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776606556] [2021-12-14 15:26:23,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:23,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:26:23,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:23,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:26:23,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:26:23,342 INFO L87 Difference]: Start difference. First operand 16691 states and 27904 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:24,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:24,717 INFO L93 Difference]: Finished difference Result 32018 states and 53524 transitions. [2021-12-14 15:26:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:26:24,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2021-12-14 15:26:24,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:24,785 INFO L225 Difference]: With dead ends: 32018 [2021-12-14 15:26:24,785 INFO L226 Difference]: Without dead ends: 28712 [2021-12-14 15:26:24,806 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 [2021-12-14 15:26:24,814 INFO L933 BasicCegarLoop]: 9234 mSDtfsCounter, 7354 mSDsluCounter, 7277 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7354 SdHoareTripleChecker+Valid, 16511 SdHoareTripleChecker+Invalid, 1426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:24,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7354 Valid, 16511 Invalid, 1426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:26:24,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28712 states. [2021-12-14 15:26:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28712 to 28710. [2021-12-14 15:26:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28710 states, 28709 states have (on average 1.6657494165592672) internal successors, (47822), 28709 states have internal predecessors, (47822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:25,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28710 states to 28710 states and 47822 transitions. [2021-12-14 15:26:25,643 INFO L78 Accepts]: Start accepts. Automaton has 28710 states and 47822 transitions. Word has length 388 [2021-12-14 15:26:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:25,644 INFO L470 AbstractCegarLoop]: Abstraction has 28710 states and 47822 transitions. [2021-12-14 15:26:25,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 28710 states and 47822 transitions. [2021-12-14 15:26:25,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-12-14 15:26:25,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:25,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:25,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:26:25,698 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:25,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:25,699 INFO L85 PathProgramCache]: Analyzing trace with hash -644895742, now seen corresponding path program 1 times [2021-12-14 15:26:25,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:25,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338742477] [2021-12-14 15:26:25,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:25,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:25,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:25,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338742477] [2021-12-14 15:26:25,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338742477] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:25,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:25,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:26:25,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796889167] [2021-12-14 15:26:25,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:25,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:26:25,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:25,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:26:25,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:26:25,958 INFO L87 Difference]: Start difference. First operand 28710 states and 47822 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:26,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:26,783 INFO L93 Difference]: Finished difference Result 33258 states and 55366 transitions. [2021-12-14 15:26:26,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:26:26,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2021-12-14 15:26:26,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:26,840 INFO L225 Difference]: With dead ends: 33258 [2021-12-14 15:26:26,840 INFO L226 Difference]: Without dead ends: 30296 [2021-12-14 15:26:26,852 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 [2021-12-14 15:26:26,853 INFO L933 BasicCegarLoop]: 10407 mSDtfsCounter, 7378 mSDsluCounter, 5611 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7378 SdHoareTripleChecker+Valid, 16018 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:26,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7378 Valid, 16018 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:26:26,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30296 states. [2021-12-14 15:26:27,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30296 to 30150. [2021-12-14 15:26:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30150 states, 30149 states have (on average 1.6640021227901423) internal successors, (50168), 30149 states have internal predecessors, (50168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30150 states to 30150 states and 50168 transitions. [2021-12-14 15:26:27,502 INFO L78 Accepts]: Start accepts. Automaton has 30150 states and 50168 transitions. Word has length 388 [2021-12-14 15:26:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:27,503 INFO L470 AbstractCegarLoop]: Abstraction has 30150 states and 50168 transitions. [2021-12-14 15:26:27,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:27,504 INFO L276 IsEmpty]: Start isEmpty. Operand 30150 states and 50168 transitions. [2021-12-14 15:26:27,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-12-14 15:26:27,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:27,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:27,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:26:27,674 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:27,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:27,674 INFO L85 PathProgramCache]: Analyzing trace with hash 896866583, now seen corresponding path program 1 times [2021-12-14 15:26:27,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:27,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363778545] [2021-12-14 15:26:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:27,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:28,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:28,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363778545] [2021-12-14 15:26:28,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363778545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:28,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:28,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:26:28,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551472467] [2021-12-14 15:26:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:28,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:26:28,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:28,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:26:28,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:26:28,096 INFO L87 Difference]: Start difference. First operand 30150 states and 50168 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:29,170 INFO L93 Difference]: Finished difference Result 73512 states and 122474 transitions. [2021-12-14 15:26:29,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:26:29,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2021-12-14 15:26:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:29,244 INFO L225 Difference]: With dead ends: 73512 [2021-12-14 15:26:29,245 INFO L226 Difference]: Without dead ends: 44978 [2021-12-14 15:26:29,279 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 [2021-12-14 15:26:29,282 INFO L933 BasicCegarLoop]: 13209 mSDtfsCounter, 4033 mSDsluCounter, 9517 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4033 SdHoareTripleChecker+Valid, 22726 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:29,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4033 Valid, 22726 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:26:29,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44978 states. [2021-12-14 15:26:30,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44978 to 43676. [2021-12-14 15:26:30,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43676 states, 43675 states have (on average 1.6571493989696622) internal successors, (72376), 43675 states have internal predecessors, (72376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43676 states to 43676 states and 72376 transitions. [2021-12-14 15:26:30,507 INFO L78 Accepts]: Start accepts. Automaton has 43676 states and 72376 transitions. Word has length 388 [2021-12-14 15:26:30,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:30,508 INFO L470 AbstractCegarLoop]: Abstraction has 43676 states and 72376 transitions. [2021-12-14 15:26:30,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 43676 states and 72376 transitions. [2021-12-14 15:26:30,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-12-14 15:26:30,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:30,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:30,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:26:30,559 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:30,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:30,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1890639942, now seen corresponding path program 1 times [2021-12-14 15:26:30,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:30,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655103513] [2021-12-14 15:26:30,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:30,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:30,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:30,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:30,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655103513] [2021-12-14 15:26:30,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655103513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:30,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:30,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:26:30,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573231343] [2021-12-14 15:26:30,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:30,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:26:30,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:30,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:26:30,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:26:30,885 INFO L87 Difference]: Start difference. First operand 43676 states and 72376 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:32,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:32,231 INFO L93 Difference]: Finished difference Result 110402 states and 183507 transitions. [2021-12-14 15:26:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:26:32,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2021-12-14 15:26:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:32,340 INFO L225 Difference]: With dead ends: 110402 [2021-12-14 15:26:32,341 INFO L226 Difference]: Without dead ends: 70520 [2021-12-14 15:26:32,402 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 [2021-12-14 15:26:32,402 INFO L933 BasicCegarLoop]: 12388 mSDtfsCounter, 4268 mSDsluCounter, 9525 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4268 SdHoareTripleChecker+Valid, 21913 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:32,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4268 Valid, 21913 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:26:32,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70520 states. [2021-12-14 15:26:34,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70520 to 66346. [2021-12-14 15:26:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66346 states, 66345 states have (on average 1.645233250433341) internal successors, (109153), 66345 states have internal predecessors, (109153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66346 states to 66346 states and 109153 transitions. [2021-12-14 15:26:34,315 INFO L78 Accepts]: Start accepts. Automaton has 66346 states and 109153 transitions. Word has length 388 [2021-12-14 15:26:34,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:34,315 INFO L470 AbstractCegarLoop]: Abstraction has 66346 states and 109153 transitions. [2021-12-14 15:26:34,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 66346 states and 109153 transitions. [2021-12-14 15:26:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-12-14 15:26:34,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:34,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:34,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:26:34,395 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:34,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1218777864, now seen corresponding path program 1 times [2021-12-14 15:26:34,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:34,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682322583] [2021-12-14 15:26:34,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:34,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:34,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:34,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682322583] [2021-12-14 15:26:34,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682322583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:34,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:34,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:26:34,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958575335] [2021-12-14 15:26:34,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:34,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:26:34,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:34,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:26:34,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:26:34,624 INFO L87 Difference]: Start difference. First operand 66346 states and 109153 transitions. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:35,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:35,685 INFO L93 Difference]: Finished difference Result 98310 states and 163139 transitions. [2021-12-14 15:26:35,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:26:35,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 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 388 [2021-12-14 15:26:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:35,742 INFO L225 Difference]: With dead ends: 98310 [2021-12-14 15:26:35,742 INFO L226 Difference]: Without dead ends: 38164 [2021-12-14 15:26:35,782 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 [2021-12-14 15:26:35,783 INFO L933 BasicCegarLoop]: 7293 mSDtfsCounter, 4749 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4749 SdHoareTripleChecker+Valid, 9766 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:35,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4749 Valid, 9766 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:26:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38164 states. [2021-12-14 15:26:36,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38164 to 34162. [2021-12-14 15:26:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34162 states, 34161 states have (on average 1.6589971019583736) internal successors, (56673), 34161 states have internal predecessors, (56673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34162 states to 34162 states and 56673 transitions. [2021-12-14 15:26:36,658 INFO L78 Accepts]: Start accepts. Automaton has 34162 states and 56673 transitions. Word has length 388 [2021-12-14 15:26:36,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:36,659 INFO L470 AbstractCegarLoop]: Abstraction has 34162 states and 56673 transitions. [2021-12-14 15:26:36,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 34162 states and 56673 transitions. [2021-12-14 15:26:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-12-14 15:26:36,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:36,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:36,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:26:36,697 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:36,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:36,697 INFO L85 PathProgramCache]: Analyzing trace with hash -365455318, now seen corresponding path program 1 times [2021-12-14 15:26:36,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:36,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447642636] [2021-12-14 15:26:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:36,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:36,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:36,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447642636] [2021-12-14 15:26:36,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447642636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:36,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:36,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:26:36,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027696617] [2021-12-14 15:26:36,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:36,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:26:36,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:36,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:26:36,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:26:36,881 INFO L87 Difference]: Start difference. First operand 34162 states and 56673 transitions. Second operand has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:39,646 INFO L93 Difference]: Finished difference Result 125819 states and 211040 transitions. [2021-12-14 15:26:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 15:26:39,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 0 states have call successors, (0), 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 392 [2021-12-14 15:26:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:39,855 INFO L225 Difference]: With dead ends: 125819 [2021-12-14 15:26:39,855 INFO L226 Difference]: Without dead ends: 116665 [2021-12-14 15:26:39,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-14 15:26:39,893 INFO L933 BasicCegarLoop]: 7065 mSDtfsCounter, 23513 mSDsluCounter, 19852 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23513 SdHoareTripleChecker+Valid, 26917 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:39,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23513 Valid, 26917 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:26:39,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116665 states. [2021-12-14 15:26:41,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116665 to 43399. [2021-12-14 15:26:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43399 states, 43398 states have (on average 1.6603069265864787) internal successors, (72054), 43398 states have internal predecessors, (72054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43399 states to 43399 states and 72054 transitions. [2021-12-14 15:26:41,761 INFO L78 Accepts]: Start accepts. Automaton has 43399 states and 72054 transitions. Word has length 392 [2021-12-14 15:26:41,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:41,761 INFO L470 AbstractCegarLoop]: Abstraction has 43399 states and 72054 transitions. [2021-12-14 15:26:41,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.0) internal successors, (392), 7 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:41,762 INFO L276 IsEmpty]: Start isEmpty. Operand 43399 states and 72054 transitions. [2021-12-14 15:26:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-12-14 15:26:41,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:41,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:41,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:26:41,800 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:41,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:41,801 INFO L85 PathProgramCache]: Analyzing trace with hash 871962965, now seen corresponding path program 1 times [2021-12-14 15:26:41,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:41,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618995283] [2021-12-14 15:26:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:41,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:41,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:41,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618995283] [2021-12-14 15:26:41,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618995283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:41,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:41,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:26:41,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573602007] [2021-12-14 15:26:41,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:41,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 15:26:41,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:41,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 15:26:41,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 15:26:41,995 INFO L87 Difference]: Start difference. First operand 43399 states and 72054 transitions. Second operand has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:44,339 INFO L93 Difference]: Finished difference Result 98221 states and 164121 transitions. [2021-12-14 15:26:44,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 15:26:44,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 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 393 [2021-12-14 15:26:44,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:44,480 INFO L225 Difference]: With dead ends: 98221 [2021-12-14 15:26:44,480 INFO L226 Difference]: Without dead ends: 79947 [2021-12-14 15:26:44,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:26:44,512 INFO L933 BasicCegarLoop]: 7050 mSDtfsCounter, 8430 mSDsluCounter, 6879 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8430 SdHoareTripleChecker+Valid, 13929 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:44,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8430 Valid, 13929 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:26:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79947 states. [2021-12-14 15:26:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79947 to 61543. [2021-12-14 15:26:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61543 states, 61542 states have (on average 1.6632218647427772) internal successors, (102358), 61542 states have internal predecessors, (102358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61543 states to 61543 states and 102358 transitions. [2021-12-14 15:26:46,980 INFO L78 Accepts]: Start accepts. Automaton has 61543 states and 102358 transitions. Word has length 393 [2021-12-14 15:26:46,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:46,981 INFO L470 AbstractCegarLoop]: Abstraction has 61543 states and 102358 transitions. [2021-12-14 15:26:46,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 61543 states and 102358 transitions. [2021-12-14 15:26:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-12-14 15:26:47,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:47,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:47,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:26:47,022 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:47,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:47,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2131821715, now seen corresponding path program 1 times [2021-12-14 15:26:47,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:47,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551434692] [2021-12-14 15:26:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:47,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:47,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:47,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551434692] [2021-12-14 15:26:47,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551434692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:47,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:47,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:26:47,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375952910] [2021-12-14 15:26:47,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:47,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:26:47,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:47,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:26:47,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:26:47,160 INFO L87 Difference]: Start difference. First operand 61543 states and 102358 transitions. Second operand has 7 states, 7 states have (on average 56.142857142857146) internal successors, (393), 7 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:53,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:26:53,173 INFO L93 Difference]: Finished difference Result 243731 states and 407420 transitions. [2021-12-14 15:26:53,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:26:53,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.142857142857146) internal successors, (393), 7 states have internal predecessors, (393), 0 states have call successors, (0), 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 393 [2021-12-14 15:26:53,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:26:53,900 INFO L225 Difference]: With dead ends: 243731 [2021-12-14 15:26:53,900 INFO L226 Difference]: Without dead ends: 207313 [2021-12-14 15:26:53,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:26:53,983 INFO L933 BasicCegarLoop]: 7771 mSDtfsCounter, 16775 mSDsluCounter, 17438 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16775 SdHoareTripleChecker+Valid, 25209 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:26:53,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16775 Valid, 25209 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:26:54,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207313 states. [2021-12-14 15:26:58,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207313 to 97895. [2021-12-14 15:26:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97895 states, 97894 states have (on average 1.6666802868408688) internal successors, (163158), 97894 states have internal predecessors, (163158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:58,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97895 states to 97895 states and 163158 transitions. [2021-12-14 15:26:58,782 INFO L78 Accepts]: Start accepts. Automaton has 97895 states and 163158 transitions. Word has length 393 [2021-12-14 15:26:58,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:26:58,783 INFO L470 AbstractCegarLoop]: Abstraction has 97895 states and 163158 transitions. [2021-12-14 15:26:58,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.142857142857146) internal successors, (393), 7 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:26:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 97895 states and 163158 transitions. [2021-12-14 15:26:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-12-14 15:26:58,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:26:58,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:26:58,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:26:58,824 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:26:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:26:58,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1534638356, now seen corresponding path program 1 times [2021-12-14 15:26:58,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:26:58,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934986139] [2021-12-14 15:26:58,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:26:58,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:26:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:26:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:26:58,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:26:58,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934986139] [2021-12-14 15:26:58,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934986139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:26:58,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:26:58,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:26:58,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728028831] [2021-12-14 15:26:58,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:26:58,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:26:58,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:26:58,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:26:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:26:58,955 INFO L87 Difference]: Start difference. First operand 97895 states and 163158 transitions. Second operand has 7 states, 7 states have (on average 56.142857142857146) internal successors, (393), 7 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)