./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-1.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/combinations/Problem05_label49+token_ring.11.cil-1.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 baa3d7d596cfacd752b448b2d94171196ab29c96dae98d968ce044a2cc25c48f --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:50:21,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:50:21,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:50:21,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:50:21,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:50:21,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:50:21,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:50:21,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:50:21,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:50:21,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:50:21,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:50:21,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:50:21,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:50:21,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:50:21,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:50:21,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:50:21,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:50:21,259 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:50:21,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:50:21,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:50:21,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:50:21,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:50:21,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:50:21,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:50:21,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:50:21,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:50:21,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:50:21,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:50:21,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:50:21,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:50:21,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:50:21,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:50:21,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:50:21,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:50:21,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:50:21,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:50:21,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:50:21,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:50:21,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:50:21,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:50:21,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:50:21,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:50:21,328 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:50:21,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:50:21,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:50:21,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:50:21,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:50:21,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:50:21,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:50:21,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:50:21,331 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:50:21,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:50:21,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:50:21,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:50:21,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:50:21,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:50:21,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:50:21,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:50:21,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:50:21,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:50:21,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:50:21,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:50:21,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:50:21,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:50:21,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:50:21,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:50:21,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:50:21,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:50:21,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:50:21,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:50:21,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:50:21,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:50:21,337 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:50:21,337 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:50:21,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:50:21,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:50:21,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> baa3d7d596cfacd752b448b2d94171196ab29c96dae98d968ce044a2cc25c48f [2021-12-14 15:50:21,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:50:21,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:50:21,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:50:21,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:50:21,597 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:50:21,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-1.c [2021-12-14 15:50:21,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39a8d1dc/9c4e5a79e8414e0590d1834fbd2ad952/FLAG15f3be6a0 [2021-12-14 15:50:22,440 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:50:22,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-1.c [2021-12-14 15:50:22,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39a8d1dc/9c4e5a79e8414e0590d1834fbd2ad952/FLAG15f3be6a0 [2021-12-14 15:50:22,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a39a8d1dc/9c4e5a79e8414e0590d1834fbd2ad952 [2021-12-14 15:50:22,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:50:22,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:50:22,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:50:22,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:50:22,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:50:22,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:50:22" (1/1) ... [2021-12-14 15:50:22,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@648a01f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:22, skipping insertion in model container [2021-12-14 15:50:22,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:50:22" (1/1) ... [2021-12-14 15:50:22,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:50:22,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:50:24,473 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-1.c[380593,380606] [2021-12-14 15:50:24,494 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-1.c[383339,383352] [2021-12-14 15:50:24,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:50:24,712 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:50:25,498 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-1.c[380593,380606] [2021-12-14 15:50:25,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.11.cil-1.c[383339,383352] [2021-12-14 15:50:25,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:50:25,598 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:50:25,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25 WrapperNode [2021-12-14 15:50:25,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:50:25,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:50:25,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:50:25,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:50:25,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (1/1) ... [2021-12-14 15:50:25,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (1/1) ... [2021-12-14 15:50:26,132 INFO L137 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13146 [2021-12-14 15:50:26,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:50:26,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:50:26,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:50:26,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:50:26,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (1/1) ... [2021-12-14 15:50:26,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (1/1) ... [2021-12-14 15:50:26,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (1/1) ... [2021-12-14 15:50:26,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (1/1) ... [2021-12-14 15:50:26,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (1/1) ... [2021-12-14 15:50:26,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (1/1) ... [2021-12-14 15:50:26,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (1/1) ... [2021-12-14 15:50:26,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:50:26,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:50:26,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:50:26,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:50:26,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (1/1) ... [2021-12-14 15:50:26,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:50:26,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:50:26,689 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 15:50:26,739 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 15:50:26,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:50:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:50:26,799 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:50:26,799 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:50:26,800 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:50:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:50:26,800 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:50:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-14 15:50:26,800 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-14 15:50:26,800 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:50:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:50:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:50:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:50:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:50:26,801 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:50:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:50:26,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:50:26,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:50:27,014 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:50:27,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:50:32,880 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:50:32,908 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:50:32,908 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-14 15:50:32,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:50:32 BoogieIcfgContainer [2021-12-14 15:50:32,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:50:32,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:50:32,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:50:32,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:50:32,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:50:22" (1/3) ... [2021-12-14 15:50:32,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2ad5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:50:32, skipping insertion in model container [2021-12-14 15:50:32,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:50:25" (2/3) ... [2021-12-14 15:50:32,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2ad5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:50:32, skipping insertion in model container [2021-12-14 15:50:32,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:50:32" (3/3) ... [2021-12-14 15:50:32,920 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.11.cil-1.c [2021-12-14 15:50:32,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:50:32,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:50:32,979 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:50:32,987 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 15:50:32,988 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:50:33,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-14 15:50:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:50:33,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:50:33,056 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] [2021-12-14 15:50:33,057 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:50:33,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:50:33,061 INFO L85 PathProgramCache]: Analyzing trace with hash 563980701, now seen corresponding path program 1 times [2021-12-14 15:50:33,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:50:33,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715857501] [2021-12-14 15:50:33,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:50:33,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:50:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:50:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:50:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:33,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:50:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:33,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:50:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:33,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:50:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:33,559 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 15:50:33,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:50:33,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715857501] [2021-12-14 15:50:33,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715857501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:50:33,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:50:33,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:50:33,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970049744] [2021-12-14 15:50:33,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:50:33,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:50:33,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:50:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:50:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:50:33,596 INFO L87 Difference]: Start difference. First operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:50:35,175 INFO L93 Difference]: Finished difference Result 5214 states and 9575 transitions. [2021-12-14 15:50:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:50:35,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:50:35,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:50:35,207 INFO L225 Difference]: With dead ends: 5214 [2021-12-14 15:50:35,207 INFO L226 Difference]: Without dead ends: 2611 [2021-12-14 15:50:35,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:50:35,224 INFO L933 BasicCegarLoop]: 4649 mSDtfsCounter, 967 mSDsluCounter, 12476 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 17125 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:50:35,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 17125 Invalid, 713 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:50:35,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-12-14 15:50:35,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2480. [2021-12-14 15:50:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2445 states have (on average 1.8286298568507158) internal successors, (4471), 2448 states have internal predecessors, (4471), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 15:50:35,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 4523 transitions. [2021-12-14 15:50:35,377 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 4523 transitions. Word has length 168 [2021-12-14 15:50:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:50:35,377 INFO L470 AbstractCegarLoop]: Abstraction has 2480 states and 4523 transitions. [2021-12-14 15:50:35,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 4523 transitions. [2021-12-14 15:50:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:50:35,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:50:35,383 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] [2021-12-14 15:50:35,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:50:35,383 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:50:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:50:35,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1969172379, now seen corresponding path program 1 times [2021-12-14 15:50:35,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:50:35,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951520129] [2021-12-14 15:50:35,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:50:35,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:50:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:35,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:50:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:35,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:50:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:35,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:50:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:50:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:50:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:35,695 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 15:50:35,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:50:35,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951520129] [2021-12-14 15:50:35,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951520129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:50:35,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:50:35,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:50:35,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693820008] [2021-12-14 15:50:35,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:50:35,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:50:35,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:50:35,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:50:35,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:50:35,703 INFO L87 Difference]: Start difference. First operand 2480 states and 4523 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:38,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:50:38,399 INFO L93 Difference]: Finished difference Result 3438 states and 6074 transitions. [2021-12-14 15:50:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:50:38,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:50:38,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:50:38,415 INFO L225 Difference]: With dead ends: 3438 [2021-12-14 15:50:38,415 INFO L226 Difference]: Without dead ends: 3098 [2021-12-14 15:50:38,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:50:38,419 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 5411 mSDsluCounter, 12852 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 17480 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:50:38,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5429 Valid, 17480 Invalid, 1934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:50:38,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2021-12-14 15:50:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 2835. [2021-12-14 15:50:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.8016588532275515) internal successors, (4996), 2777 states have internal predecessors, (4996), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-12-14 15:50:38,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5091 transitions. [2021-12-14 15:50:38,517 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5091 transitions. Word has length 168 [2021-12-14 15:50:38,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:50:38,517 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5091 transitions. [2021-12-14 15:50:38,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5091 transitions. [2021-12-14 15:50:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:50:38,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:50:38,520 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] [2021-12-14 15:50:38,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:50:38,521 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:50:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:50:38,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1403394409, now seen corresponding path program 1 times [2021-12-14 15:50:38,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:50:38,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566718294] [2021-12-14 15:50:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:50:38,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:50:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:50:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:50:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:50:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:50:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:50:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:38,688 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 15:50:38,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:50:38,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566718294] [2021-12-14 15:50:38,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566718294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:50:38,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:50:38,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:50:38,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842448737] [2021-12-14 15:50:38,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:50:38,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:50:38,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:50:38,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:50:38,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:50:38,691 INFO L87 Difference]: Start difference. First operand 2835 states and 5091 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:40,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:50:40,137 INFO L93 Difference]: Finished difference Result 3811 states and 6680 transitions. [2021-12-14 15:50:40,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:50:40,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:50:40,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:50:40,150 INFO L225 Difference]: With dead ends: 3811 [2021-12-14 15:50:40,151 INFO L226 Difference]: Without dead ends: 3116 [2021-12-14 15:50:40,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:50:40,154 INFO L933 BasicCegarLoop]: 4575 mSDtfsCounter, 5162 mSDsluCounter, 12589 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17164 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:50:40,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5181 Valid, 17164 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:50:40,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-12-14 15:50:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2835. [2021-12-14 15:50:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.8009376126938335) internal successors, (4994), 2777 states have internal predecessors, (4994), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-12-14 15:50:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5089 transitions. [2021-12-14 15:50:40,351 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5089 transitions. Word has length 168 [2021-12-14 15:50:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:50:40,351 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5089 transitions. [2021-12-14 15:50:40,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5089 transitions. [2021-12-14 15:50:40,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:50:40,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:50:40,354 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] [2021-12-14 15:50:40,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:50:40,356 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:50:40,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:50:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash 493585049, now seen corresponding path program 1 times [2021-12-14 15:50:40,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:50:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865018148] [2021-12-14 15:50:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:50:40,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:50:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:40,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:50:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:40,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:50:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:50:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:40,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:50:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:40,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:50:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:40,514 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 15:50:40,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:50:40,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865018148] [2021-12-14 15:50:40,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865018148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:50:40,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:50:40,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:50:40,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637406801] [2021-12-14 15:50:40,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:50:40,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:50:40,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:50:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:50:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:50:40,517 INFO L87 Difference]: Start difference. First operand 2835 states and 5089 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:43,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:50:43,362 INFO L93 Difference]: Finished difference Result 4292 states and 7445 transitions. [2021-12-14 15:50:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:50:43,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:50:43,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:50:43,378 INFO L225 Difference]: With dead ends: 4292 [2021-12-14 15:50:43,378 INFO L226 Difference]: Without dead ends: 3597 [2021-12-14 15:50:43,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:50:43,382 INFO L933 BasicCegarLoop]: 4913 mSDtfsCounter, 5425 mSDsluCounter, 17723 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5443 SdHoareTripleChecker+Valid, 22636 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:50:43,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5443 Valid, 22636 Invalid, 2919 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:50:43,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2021-12-14 15:50:43,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 3165. [2021-12-14 15:50:43,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3076 states have (on average 1.777633289986996) internal successors, (5468), 3081 states have internal predecessors, (5468), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2021-12-14 15:50:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5605 transitions. [2021-12-14 15:50:43,486 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5605 transitions. Word has length 168 [2021-12-14 15:50:43,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:50:43,486 INFO L470 AbstractCegarLoop]: Abstraction has 3165 states and 5605 transitions. [2021-12-14 15:50:43,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5605 transitions. [2021-12-14 15:50:43,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:50:43,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:50:43,489 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] [2021-12-14 15:50:43,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:50:43,490 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:50:43,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:50:43,490 INFO L85 PathProgramCache]: Analyzing trace with hash 831872599, now seen corresponding path program 1 times [2021-12-14 15:50:43,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:50:43,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605266891] [2021-12-14 15:50:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:50:43,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:50:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:50:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:50:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:50:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:50:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:50:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:43,654 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 15:50:43,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:50:43,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605266891] [2021-12-14 15:50:43,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605266891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:50:43,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:50:43,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:50:43,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956868923] [2021-12-14 15:50:43,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:50:43,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:50:43,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:50:43,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:50:43,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:50:43,658 INFO L87 Difference]: Start difference. First operand 3165 states and 5605 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:50:46,481 INFO L93 Difference]: Finished difference Result 5554 states and 9461 transitions. [2021-12-14 15:50:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:50:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:50:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:50:46,502 INFO L225 Difference]: With dead ends: 5554 [2021-12-14 15:50:46,502 INFO L226 Difference]: Without dead ends: 4529 [2021-12-14 15:50:46,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:50:46,507 INFO L933 BasicCegarLoop]: 4905 mSDtfsCounter, 5422 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5440 SdHoareTripleChecker+Valid, 22624 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:50:46,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5440 Valid, 22624 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2840 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:50:46,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2021-12-14 15:50:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 3827. [2021-12-14 15:50:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 3684 states have (on average 1.742399565689468) internal successors, (6419), 3691 states have internal predecessors, (6419), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2021-12-14 15:50:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 6644 transitions. [2021-12-14 15:50:46,642 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 6644 transitions. Word has length 168 [2021-12-14 15:50:46,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:50:46,643 INFO L470 AbstractCegarLoop]: Abstraction has 3827 states and 6644 transitions. [2021-12-14 15:50:46,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 6644 transitions. [2021-12-14 15:50:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:50:46,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:50:46,646 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] [2021-12-14 15:50:46,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:50:46,646 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:50:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:50:46,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1258427097, now seen corresponding path program 1 times [2021-12-14 15:50:46,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:50:46,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064130495] [2021-12-14 15:50:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:50:46,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:50:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:50:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:46,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:50:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:46,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:50:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:50:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:46,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:50:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:46,803 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 15:50:46,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:50:46,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064130495] [2021-12-14 15:50:46,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064130495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:50:46,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:50:46,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:50:46,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313012378] [2021-12-14 15:50:46,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:50:46,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:50:46,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:50:46,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:50:46,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:50:46,806 INFO L87 Difference]: Start difference. First operand 3827 states and 6644 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:50:50,000 INFO L93 Difference]: Finished difference Result 7986 states and 13324 transitions. [2021-12-14 15:50:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:50:50,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:50:50,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:50:50,029 INFO L225 Difference]: With dead ends: 7986 [2021-12-14 15:50:50,029 INFO L226 Difference]: Without dead ends: 6299 [2021-12-14 15:50:50,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:50:50,038 INFO L933 BasicCegarLoop]: 4901 mSDtfsCounter, 5418 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5436 SdHoareTripleChecker+Valid, 22620 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:50:50,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5436 Valid, 22620 Invalid, 2915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2835 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-14 15:50:50,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6299 states. [2021-12-14 15:50:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6299 to 5153. [2021-12-14 15:50:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 4902 states have (on average 1.6978784169726642) internal successors, (8323), 4913 states have internal predecessors, (8323), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:50:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 8730 transitions. [2021-12-14 15:50:50,320 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 8730 transitions. Word has length 168 [2021-12-14 15:50:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:50:50,321 INFO L470 AbstractCegarLoop]: Abstraction has 5153 states and 8730 transitions. [2021-12-14 15:50:50,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 8730 transitions. [2021-12-14 15:50:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:50:50,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:50:50,326 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] [2021-12-14 15:50:50,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:50:50,326 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:50:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:50:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash 717997591, now seen corresponding path program 1 times [2021-12-14 15:50:50,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:50:50,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891719607] [2021-12-14 15:50:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:50:50,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:50:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:50,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:50:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:50,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:50:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:50:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:50:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:50,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:50:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:50,493 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 15:50:50,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:50:50,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891719607] [2021-12-14 15:50:50,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891719607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:50:50,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:50:50,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:50:50,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749967571] [2021-12-14 15:50:50,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:50:50,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:50:50,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:50:50,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:50:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:50:50,496 INFO L87 Difference]: Start difference. First operand 5153 states and 8730 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:52,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:50:52,070 INFO L93 Difference]: Finished difference Result 9338 states and 15489 transitions. [2021-12-14 15:50:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:50:52,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:50:52,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:50:52,093 INFO L225 Difference]: With dead ends: 9338 [2021-12-14 15:50:52,093 INFO L226 Difference]: Without dead ends: 6325 [2021-12-14 15:50:52,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:50:52,103 INFO L933 BasicCegarLoop]: 4558 mSDtfsCounter, 5165 mSDsluCounter, 12588 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5184 SdHoareTripleChecker+Valid, 17146 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:50:52,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5184 Valid, 17146 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:50:52,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-12-14 15:50:52,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 5153. [2021-12-14 15:50:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 4902 states have (on average 1.6960424316605467) internal successors, (8314), 4913 states have internal predecessors, (8314), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:50:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 8721 transitions. [2021-12-14 15:50:52,326 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 8721 transitions. Word has length 168 [2021-12-14 15:50:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:50:52,326 INFO L470 AbstractCegarLoop]: Abstraction has 5153 states and 8721 transitions. [2021-12-14 15:50:52,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:52,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 8721 transitions. [2021-12-14 15:50:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:50:52,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:50:52,330 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] [2021-12-14 15:50:52,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:50:52,330 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:50:52,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:50:52,331 INFO L85 PathProgramCache]: Analyzing trace with hash 562017049, now seen corresponding path program 1 times [2021-12-14 15:50:52,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:50:52,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100725828] [2021-12-14 15:50:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:50:52,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:50:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:50:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:50:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:50:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:52,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:50:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:52,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:50:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:52,467 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 15:50:52,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:50:52,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100725828] [2021-12-14 15:50:52,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100725828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:50:52,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:50:52,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:50:52,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201979143] [2021-12-14 15:50:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:50:52,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:50:52,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:50:52,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:50:52,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:50:52,469 INFO L87 Difference]: Start difference. First operand 5153 states and 8721 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:50:53,948 INFO L93 Difference]: Finished difference Result 9318 states and 15423 transitions. [2021-12-14 15:50:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:50:53,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:50:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:50:53,966 INFO L225 Difference]: With dead ends: 9318 [2021-12-14 15:50:53,967 INFO L226 Difference]: Without dead ends: 6305 [2021-12-14 15:50:53,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:50:53,978 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 5006 mSDsluCounter, 16736 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5025 SdHoareTripleChecker+Valid, 21288 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:50:53,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5025 Valid, 21288 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:50:53,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6305 states. [2021-12-14 15:50:54,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6305 to 5153. [2021-12-14 15:50:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 4902 states have (on average 1.6942064463484292) internal successors, (8305), 4913 states have internal predecessors, (8305), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:50:54,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 8712 transitions. [2021-12-14 15:50:54,214 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 8712 transitions. Word has length 168 [2021-12-14 15:50:54,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:50:54,214 INFO L470 AbstractCegarLoop]: Abstraction has 5153 states and 8712 transitions. [2021-12-14 15:50:54,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:54,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 8712 transitions. [2021-12-14 15:50:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:50:54,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:50:54,218 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] [2021-12-14 15:50:54,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:50:54,219 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:50:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:50:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1225852773, now seen corresponding path program 1 times [2021-12-14 15:50:54,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:50:54,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733899] [2021-12-14 15:50:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:50:54,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:50:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:54,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:50:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:54,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:50:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:54,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:50:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:54,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:50:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:54,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:50:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:54,352 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 15:50:54,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:50:54,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733899] [2021-12-14 15:50:54,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:50:54,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:50:54,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:50:54,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195592262] [2021-12-14 15:50:54,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:50:54,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:50:54,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:50:54,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:50:54,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:50:54,355 INFO L87 Difference]: Start difference. First operand 5153 states and 8712 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:50:57,427 INFO L93 Difference]: Finished difference Result 12820 states and 20924 transitions. [2021-12-14 15:50:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:50:57,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:50:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:50:57,456 INFO L225 Difference]: With dead ends: 12820 [2021-12-14 15:50:57,457 INFO L226 Difference]: Without dead ends: 9807 [2021-12-14 15:50:57,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:50:57,469 INFO L933 BasicCegarLoop]: 4879 mSDtfsCounter, 5401 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2775 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5419 SdHoareTripleChecker+Valid, 22598 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:50:57,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5419 Valid, 22598 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2775 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:50:57,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9807 states. [2021-12-14 15:50:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9807 to 7837. [2021-12-14 15:50:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7837 states, 7370 states have (on average 1.6474898236092266) internal successors, (12142), 7389 states have internal predecessors, (12142), 347 states have call successors, (347), 103 states have call predecessors, (347), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2021-12-14 15:50:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7837 states to 7837 states and 12931 transitions. [2021-12-14 15:50:57,796 INFO L78 Accepts]: Start accepts. Automaton has 7837 states and 12931 transitions. Word has length 168 [2021-12-14 15:50:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:50:57,796 INFO L470 AbstractCegarLoop]: Abstraction has 7837 states and 12931 transitions. [2021-12-14 15:50:57,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:50:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 7837 states and 12931 transitions. [2021-12-14 15:50:57,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:50:57,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:50:57,801 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] [2021-12-14 15:50:57,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:50:57,802 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:50:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:50:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash 933231321, now seen corresponding path program 1 times [2021-12-14 15:50:57,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:50:57,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205193249] [2021-12-14 15:50:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:50:57,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:50:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:57,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:50:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:50:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:57,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:50:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:57,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:50:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:57,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:50:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:50:57,923 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 15:50:57,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:50:57,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205193249] [2021-12-14 15:50:57,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205193249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:50:57,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:50:57,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:50:57,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645888] [2021-12-14 15:50:57,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:50:57,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:50:57,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:50:57,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:50:57,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:50:57,925 INFO L87 Difference]: Start difference. First operand 7837 states and 12931 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:01,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:01,251 INFO L93 Difference]: Finished difference Result 22550 states and 36383 transitions. [2021-12-14 15:51:01,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:51:01,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:51:01,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:01,314 INFO L225 Difference]: With dead ends: 22550 [2021-12-14 15:51:01,314 INFO L226 Difference]: Without dead ends: 16853 [2021-12-14 15:51:01,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:51:01,340 INFO L933 BasicCegarLoop]: 4874 mSDtfsCounter, 5400 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5418 SdHoareTripleChecker+Valid, 22593 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:01,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5418 Valid, 22593 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:51:01,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16853 states. [2021-12-14 15:51:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16853 to 13214. [2021-12-14 15:51:01,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13214 states, 12315 states have (on average 1.6099066179455948) internal successors, (19826), 12350 states have internal predecessors, (19826), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2021-12-14 15:51:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13214 states to 13214 states and 21433 transitions. [2021-12-14 15:51:02,024 INFO L78 Accepts]: Start accepts. Automaton has 13214 states and 21433 transitions. Word has length 168 [2021-12-14 15:51:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:02,025 INFO L470 AbstractCegarLoop]: Abstraction has 13214 states and 21433 transitions. [2021-12-14 15:51:02,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:02,025 INFO L276 IsEmpty]: Start isEmpty. Operand 13214 states and 21433 transitions. [2021-12-14 15:51:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:51:02,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:02,033 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] [2021-12-14 15:51:02,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:51:02,033 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:02,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1002879195, now seen corresponding path program 1 times [2021-12-14 15:51:02,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:02,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488597503] [2021-12-14 15:51:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:02,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:02,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:51:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:02,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:51:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:51:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:02,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:51:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:02,152 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 15:51:02,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:02,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488597503] [2021-12-14 15:51:02,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488597503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:02,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:02,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:02,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855588897] [2021-12-14 15:51:02,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:02,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:02,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:02,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:02,154 INFO L87 Difference]: Start difference. First operand 13214 states and 21433 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:51:05,989 INFO L93 Difference]: Finished difference Result 42005 states and 67483 transitions. [2021-12-14 15:51:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:51:05,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2021-12-14 15:51:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:51:06,107 INFO L225 Difference]: With dead ends: 42005 [2021-12-14 15:51:06,107 INFO L226 Difference]: Without dead ends: 30931 [2021-12-14 15:51:06,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:51:06,148 INFO L933 BasicCegarLoop]: 4869 mSDtfsCounter, 5399 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5417 SdHoareTripleChecker+Valid, 22588 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:51:06,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5417 Valid, 22588 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:51:06,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30931 states. [2021-12-14 15:51:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30931 to 23999. [2021-12-14 15:51:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23999 states, 22236 states have (on average 1.5848174132038135) internal successors, (35240), 22303 states have internal predecessors, (35240), 1307 states have call successors, (1307), 391 states have call predecessors, (1307), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2021-12-14 15:51:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23999 states to 23999 states and 38645 transitions. [2021-12-14 15:51:07,598 INFO L78 Accepts]: Start accepts. Automaton has 23999 states and 38645 transitions. Word has length 168 [2021-12-14 15:51:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:51:07,599 INFO L470 AbstractCegarLoop]: Abstraction has 23999 states and 38645 transitions. [2021-12-14 15:51:07,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:51:07,599 INFO L276 IsEmpty]: Start isEmpty. Operand 23999 states and 38645 transitions. [2021-12-14 15:51:07,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:51:07,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:51:07,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:51:07,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:51:07,612 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:51:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:51:07,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1420767897, now seen corresponding path program 1 times [2021-12-14 15:51:07,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:51:07,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484885617] [2021-12-14 15:51:07,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:51:07,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:51:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:51:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:51:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:51:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:51:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:51:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:51:07,738 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 15:51:07,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:51:07,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484885617] [2021-12-14 15:51:07,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484885617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:51:07,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:51:07,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:51:07,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986047660] [2021-12-14 15:51:07,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:51:07,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:51:07,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:51:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:51:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:51:07,740 INFO L87 Difference]: Start difference. First operand 23999 states and 38645 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)