./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label37.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label37.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 3ac46a6c4d9bc7297b40bc12f5914a2752e0cec6b52579c95d26ee7a4d471018 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 00:33:09,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 00:33:09,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 00:33:09,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 00:33:09,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 00:33:09,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 00:33:09,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 00:33:09,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 00:33:09,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 00:33:09,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 00:33:09,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 00:33:09,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 00:33:09,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 00:33:09,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 00:33:09,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 00:33:09,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 00:33:09,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 00:33:09,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 00:33:09,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 00:33:09,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 00:33:09,384 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 00:33:09,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 00:33:09,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 00:33:09,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 00:33:09,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 00:33:09,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 00:33:09,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 00:33:09,393 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 00:33:09,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 00:33:09,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 00:33:09,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 00:33:09,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 00:33:09,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 00:33:09,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 00:33:09,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 00:33:09,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 00:33:09,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 00:33:09,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 00:33:09,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 00:33:09,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 00:33:09,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 00:33:09,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 00:33:09,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 00:33:09,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 00:33:09,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 00:33:09,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 00:33:09,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 00:33:09,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 00:33:09,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 00:33:09,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 00:33:09,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 00:33:09,454 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 00:33:09,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 00:33:09,455 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 00:33:09,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 00:33:09,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 00:33:09,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 00:33:09,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 00:33:09,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 00:33:09,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 00:33:09,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 00:33:09,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 00:33:09,457 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 00:33:09,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 00:33:09,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 00:33:09,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 00:33:09,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 00:33:09,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 00:33:09,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 00:33:09,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 00:33:09,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 00:33:09,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 00:33:09,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 00:33:09,459 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 00:33:09,459 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 00:33:09,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 00:33:09,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ac46a6c4d9bc7297b40bc12f5914a2752e0cec6b52579c95d26ee7a4d471018 [2022-07-21 00:33:09,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 00:33:09,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 00:33:09,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 00:33:09,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 00:33:09,781 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 00:33:09,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label37.c [2022-07-21 00:33:09,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b002d4c2e/07013f24ac104b55a4dd4ddd168673b6/FLAGd5ca3d0df [2022-07-21 00:33:10,691 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 00:33:10,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label37.c [2022-07-21 00:33:10,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b002d4c2e/07013f24ac104b55a4dd4ddd168673b6/FLAGd5ca3d0df [2022-07-21 00:33:10,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b002d4c2e/07013f24ac104b55a4dd4ddd168673b6 [2022-07-21 00:33:10,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 00:33:10,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 00:33:10,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 00:33:10,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 00:33:10,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 00:33:10,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:33:10" (1/1) ... [2022-07-21 00:33:10,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8d336c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:10, skipping insertion in model container [2022-07-21 00:33:10,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:33:10" (1/1) ... [2022-07-21 00:33:10,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 00:33:11,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 00:33:11,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label37.c[5183,5196] [2022-07-21 00:33:12,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 00:33:12,572 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 00:33:12,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label37.c[5183,5196] [2022-07-21 00:33:13,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 00:33:13,425 INFO L208 MainTranslator]: Completed translation [2022-07-21 00:33:13,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13 WrapperNode [2022-07-21 00:33:13,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 00:33:13,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 00:33:13,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 00:33:13,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 00:33:13,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (1/1) ... [2022-07-21 00:33:13,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (1/1) ... [2022-07-21 00:33:14,419 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-21 00:33:14,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 00:33:14,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 00:33:14,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 00:33:14,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 00:33:14,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (1/1) ... [2022-07-21 00:33:14,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (1/1) ... [2022-07-21 00:33:14,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (1/1) ... [2022-07-21 00:33:14,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (1/1) ... [2022-07-21 00:33:15,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (1/1) ... [2022-07-21 00:33:15,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (1/1) ... [2022-07-21 00:33:15,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (1/1) ... [2022-07-21 00:33:15,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 00:33:15,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 00:33:15,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 00:33:15,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 00:33:15,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (1/1) ... [2022-07-21 00:33:15,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 00:33:15,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:33:15,389 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) [2022-07-21 00:33:15,433 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 [2022-07-21 00:33:15,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 00:33:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 00:33:15,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 00:33:15,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 00:33:15,595 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 00:33:15,597 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 00:33:22,321 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 00:33:22,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 00:33:22,342 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 00:33:22,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:33:22 BoogieIcfgContainer [2022-07-21 00:33:22,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 00:33:22,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 00:33:22,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 00:33:22,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 00:33:22,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:33:10" (1/3) ... [2022-07-21 00:33:22,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b87de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:33:22, skipping insertion in model container [2022-07-21 00:33:22,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:33:13" (2/3) ... [2022-07-21 00:33:22,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b87de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:33:22, skipping insertion in model container [2022-07-21 00:33:22,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:33:22" (3/3) ... [2022-07-21 00:33:22,353 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label37.c [2022-07-21 00:33:22,365 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 00:33:22,366 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 00:33:22,453 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 00:33:22,458 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70dd40c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@694bc9df [2022-07-21 00:33:22,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 00:33:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:22,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 00:33:22,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:33:22,476 INFO L195 NwaCegarLoop]: 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] [2022-07-21 00:33:22,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:33:22,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:33:22,481 INFO L85 PathProgramCache]: Analyzing trace with hash 323974986, now seen corresponding path program 1 times [2022-07-21 00:33:22,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:33:22,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947968589] [2022-07-21 00:33:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:22,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:33:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:33:22,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:33:22,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947968589] [2022-07-21 00:33:22,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947968589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:33:22,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:33:22,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:33:22,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315607708] [2022-07-21 00:33:22,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:33:22,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:33:22,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:33:22,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:33:22,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:33:22,790 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:29,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:33:29,620 INFO L93 Difference]: Finished difference Result 4919 states and 9313 transitions. [2022-07-21 00:33:29,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:33:29,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-07-21 00:33:29,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:33:29,653 INFO L225 Difference]: With dead ends: 4919 [2022-07-21 00:33:29,654 INFO L226 Difference]: Without dead ends: 3107 [2022-07-21 00:33:29,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:33:29,663 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 1515 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4638 mSolverCounterSat, 1110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 5748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1110 IncrementalHoareTripleChecker+Valid, 4638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-21 00:33:29,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1457 Invalid, 5748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1110 Valid, 4638 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-21 00:33:29,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2022-07-21 00:33:29,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3106. [2022-07-21 00:33:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 3105 states have (on average 1.652818035426731) internal successors, (5132), 3105 states have internal predecessors, (5132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:29,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5132 transitions. [2022-07-21 00:33:29,803 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5132 transitions. Word has length 38 [2022-07-21 00:33:29,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:33:29,804 INFO L495 AbstractCegarLoop]: Abstraction has 3106 states and 5132 transitions. [2022-07-21 00:33:29,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5132 transitions. [2022-07-21 00:33:29,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-21 00:33:29,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:33:29,807 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:33:29,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 00:33:29,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:33:29,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:33:29,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1995074114, now seen corresponding path program 1 times [2022-07-21 00:33:29,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:33:29,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571727247] [2022-07-21 00:33:29,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:29,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:33:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:29,949 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:33:29,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:33:29,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571727247] [2022-07-21 00:33:29,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571727247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:33:29,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:33:29,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:33:29,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163986522] [2022-07-21 00:33:29,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:33:29,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:33:29,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:33:29,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:33:29,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:33:29,953 INFO L87 Difference]: Start difference. First operand 3106 states and 5132 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:33:41,536 INFO L93 Difference]: Finished difference Result 10391 states and 16943 transitions. [2022-07-21 00:33:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:33:41,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-07-21 00:33:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:33:41,569 INFO L225 Difference]: With dead ends: 10391 [2022-07-21 00:33:41,570 INFO L226 Difference]: Without dead ends: 7287 [2022-07-21 00:33:41,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:33:41,578 INFO L413 NwaCegarLoop]: 1842 mSDtfsCounter, 4207 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 11122 mSolverCounterSat, 1406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 12528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1406 IncrementalHoareTripleChecker+Valid, 11122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-07-21 00:33:41,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4207 Valid, 2104 Invalid, 12528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1406 Valid, 11122 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-07-21 00:33:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7287 states. [2022-07-21 00:33:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7287 to 7236. [2022-07-21 00:33:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.5214927436074637) internal successors, (11008), 7235 states have internal predecessors, (11008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 11008 transitions. [2022-07-21 00:33:41,748 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 11008 transitions. Word has length 107 [2022-07-21 00:33:41,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:33:41,750 INFO L495 AbstractCegarLoop]: Abstraction has 7236 states and 11008 transitions. [2022-07-21 00:33:41,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:41,750 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 11008 transitions. [2022-07-21 00:33:41,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-21 00:33:41,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:33:41,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:33:41,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 00:33:41,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:33:41,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:33:41,770 INFO L85 PathProgramCache]: Analyzing trace with hash -766359453, now seen corresponding path program 1 times [2022-07-21 00:33:41,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:33:41,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980706055] [2022-07-21 00:33:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:41,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:33:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:33:42,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:33:42,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980706055] [2022-07-21 00:33:42,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980706055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:33:42,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:33:42,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:33:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578603218] [2022-07-21 00:33:42,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:33:42,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:33:42,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:33:42,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:33:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:33:42,131 INFO L87 Difference]: Start difference. First operand 7236 states and 11008 transitions. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:33:48,523 INFO L93 Difference]: Finished difference Result 13136 states and 20668 transitions. [2022-07-21 00:33:48,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:33:48,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2022-07-21 00:33:48,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:33:48,552 INFO L225 Difference]: With dead ends: 13136 [2022-07-21 00:33:48,552 INFO L226 Difference]: Without dead ends: 7236 [2022-07-21 00:33:48,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:33:48,562 INFO L413 NwaCegarLoop]: 1767 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7319 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 7327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-21 00:33:48,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2109 Invalid, 7327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7319 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-07-21 00:33:48,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2022-07-21 00:33:48,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2022-07-21 00:33:48,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.5202487906012438) internal successors, (10999), 7235 states have internal predecessors, (10999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 10999 transitions. [2022-07-21 00:33:48,706 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 10999 transitions. Word has length 273 [2022-07-21 00:33:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:33:48,707 INFO L495 AbstractCegarLoop]: Abstraction has 7236 states and 10999 transitions. [2022-07-21 00:33:48,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 10999 transitions. [2022-07-21 00:33:48,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2022-07-21 00:33:48,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:33:48,720 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:33:48,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 00:33:48,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:33:48,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:33:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1783465881, now seen corresponding path program 1 times [2022-07-21 00:33:48,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:33:48,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301430872] [2022-07-21 00:33:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:48,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:33:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-21 00:33:49,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:33:49,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301430872] [2022-07-21 00:33:49,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301430872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:33:49,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:33:49,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:33:49,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499371141] [2022-07-21 00:33:49,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:33:49,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:33:49,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:33:49,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:33:49,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:33:49,146 INFO L87 Difference]: Start difference. First operand 7236 states and 10999 transitions. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 2 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:54,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:33:54,435 INFO L93 Difference]: Finished difference Result 15842 states and 24472 transitions. [2022-07-21 00:33:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:33:54,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 2 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 590 [2022-07-21 00:33:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:33:54,472 INFO L225 Difference]: With dead ends: 15842 [2022-07-21 00:33:54,472 INFO L226 Difference]: Without dead ends: 9973 [2022-07-21 00:33:54,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:33:54,484 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1396 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-21 00:33:54,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 754 Invalid, 5598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-21 00:33:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2022-07-21 00:33:54,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9969. [2022-07-21 00:33:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.3901484751203852) internal successors, (13857), 9968 states have internal predecessors, (13857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 13857 transitions. [2022-07-21 00:33:54,705 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 13857 transitions. Word has length 590 [2022-07-21 00:33:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:33:54,707 INFO L495 AbstractCegarLoop]: Abstraction has 9969 states and 13857 transitions. [2022-07-21 00:33:54,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 2 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:33:54,708 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 13857 transitions. [2022-07-21 00:33:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-07-21 00:33:54,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:33:54,719 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:33:54,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 00:33:54,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:33:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:33:54,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1041363556, now seen corresponding path program 1 times [2022-07-21 00:33:54,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:33:54,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240232250] [2022-07-21 00:33:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:33:54,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:33:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:33:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-21 00:33:55,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:33:55,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240232250] [2022-07-21 00:33:55,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240232250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:33:55,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:33:55,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:33:55,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437869354] [2022-07-21 00:33:55,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:33:55,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:33:55,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:33:55,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:33:55,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:33:55,075 INFO L87 Difference]: Start difference. First operand 9969 states and 13857 transitions. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 2 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:01,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:01,720 INFO L93 Difference]: Finished difference Result 26933 states and 38507 transitions. [2022-07-21 00:34:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:01,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 2 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 593 [2022-07-21 00:34:01,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:01,758 INFO L225 Difference]: With dead ends: 26933 [2022-07-21 00:34:01,758 INFO L226 Difference]: Without dead ends: 18331 [2022-07-21 00:34:01,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:01,772 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 2119 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5113 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 5547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:01,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 982 Invalid, 5547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5113 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-07-21 00:34:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18331 states. [2022-07-21 00:34:02,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18331 to 18329. [2022-07-21 00:34:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18329 states, 18328 states have (on average 1.378601047577477) internal successors, (25267), 18328 states have internal predecessors, (25267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18329 states to 18329 states and 25267 transitions. [2022-07-21 00:34:02,069 INFO L78 Accepts]: Start accepts. Automaton has 18329 states and 25267 transitions. Word has length 593 [2022-07-21 00:34:02,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:02,070 INFO L495 AbstractCegarLoop]: Abstraction has 18329 states and 25267 transitions. [2022-07-21 00:34:02,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 2 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:02,071 INFO L276 IsEmpty]: Start isEmpty. Operand 18329 states and 25267 transitions. [2022-07-21 00:34:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2022-07-21 00:34:02,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:02,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:02,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 00:34:02,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:02,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1308389203, now seen corresponding path program 1 times [2022-07-21 00:34:02,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:02,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554337189] [2022-07-21 00:34:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:02,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 71 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:34:02,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:02,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554337189] [2022-07-21 00:34:02,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554337189] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 00:34:02,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929406071] [2022-07-21 00:34:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:02,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:34:02,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:34:02,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 00:34:02,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 00:34:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:02,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 00:34:02,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 00:34:03,136 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:34:03,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 00:34:03,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929406071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:03,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 00:34:03,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 00:34:03,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155942445] [2022-07-21 00:34:03,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:03,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:34:03,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:03,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:34:03,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 00:34:03,140 INFO L87 Difference]: Start difference. First operand 18329 states and 25267 transitions. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:08,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:08,730 INFO L93 Difference]: Finished difference Result 51670 states and 72287 transitions. [2022-07-21 00:34:08,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:08,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 607 [2022-07-21 00:34:08,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:08,800 INFO L225 Difference]: With dead ends: 51670 [2022-07-21 00:34:08,801 INFO L226 Difference]: Without dead ends: 34708 [2022-07-21 00:34:08,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 00:34:08,829 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1566 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 3906 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 5634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:08,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 1687 Invalid, 5634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3906 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-21 00:34:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34708 states. [2022-07-21 00:34:09,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34708 to 34708. [2022-07-21 00:34:09,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34708 states, 34707 states have (on average 1.2475005042210505) internal successors, (43297), 34707 states have internal predecessors, (43297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34708 states to 34708 states and 43297 transitions. [2022-07-21 00:34:09,311 INFO L78 Accepts]: Start accepts. Automaton has 34708 states and 43297 transitions. Word has length 607 [2022-07-21 00:34:09,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:09,312 INFO L495 AbstractCegarLoop]: Abstraction has 34708 states and 43297 transitions. [2022-07-21 00:34:09,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:09,313 INFO L276 IsEmpty]: Start isEmpty. Operand 34708 states and 43297 transitions. [2022-07-21 00:34:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-07-21 00:34:09,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:09,317 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:09,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 00:34:09,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 00:34:09,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:09,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:09,537 INFO L85 PathProgramCache]: Analyzing trace with hash -636095440, now seen corresponding path program 1 times [2022-07-21 00:34:09,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:09,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285845684] [2022-07-21 00:34:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:09,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 00:34:09,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:09,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285845684] [2022-07-21 00:34:09,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285845684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:09,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:34:09,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 00:34:09,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797607862] [2022-07-21 00:34:09,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:09,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 00:34:09,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:09,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 00:34:09,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:34:09,905 INFO L87 Difference]: Start difference. First operand 34708 states and 43297 transitions. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:17,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:17,342 INFO L93 Difference]: Finished difference Result 74910 states and 92504 transitions. [2022-07-21 00:34:17,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 00:34:17,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 629 [2022-07-21 00:34:17,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:17,405 INFO L225 Difference]: With dead ends: 74910 [2022-07-21 00:34:17,405 INFO L226 Difference]: Without dead ends: 41543 [2022-07-21 00:34:17,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:34:17,442 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 2252 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 10032 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 10196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 10032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:17,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 1852 Invalid, 10196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 10032 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-21 00:34:17,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41543 states. [2022-07-21 00:34:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41543 to 40175. [2022-07-21 00:34:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40175 states, 40174 states have (on average 1.2193209538507492) internal successors, (48985), 40174 states have internal predecessors, (48985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40175 states to 40175 states and 48985 transitions. [2022-07-21 00:34:17,924 INFO L78 Accepts]: Start accepts. Automaton has 40175 states and 48985 transitions. Word has length 629 [2022-07-21 00:34:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:17,926 INFO L495 AbstractCegarLoop]: Abstraction has 40175 states and 48985 transitions. [2022-07-21 00:34:17,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:17,927 INFO L276 IsEmpty]: Start isEmpty. Operand 40175 states and 48985 transitions. [2022-07-21 00:34:17,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2022-07-21 00:34:17,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:17,936 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:17,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 00:34:17,936 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash -149990662, now seen corresponding path program 1 times [2022-07-21 00:34:17,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:17,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566286224] [2022-07-21 00:34:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:17,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-21 00:34:18,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:18,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566286224] [2022-07-21 00:34:18,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566286224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:18,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:34:18,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 00:34:18,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569115939] [2022-07-21 00:34:18,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:18,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:34:18,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:18,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:34:18,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:34:18,308 INFO L87 Difference]: Start difference. First operand 40175 states and 48985 transitions. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:28,358 INFO L93 Difference]: Finished difference Result 144642 states and 178506 transitions. [2022-07-21 00:34:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:34:28,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 822 [2022-07-21 00:34:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:28,526 INFO L225 Difference]: With dead ends: 144642 [2022-07-21 00:34:28,526 INFO L226 Difference]: Without dead ends: 105834 [2022-07-21 00:34:28,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:34:28,565 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 3334 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 9067 mSolverCounterSat, 2755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3334 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 11822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2755 IncrementalHoareTripleChecker+Valid, 9067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:28,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3334 Valid, 981 Invalid, 11822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2755 Valid, 9067 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-07-21 00:34:28,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105834 states. [2022-07-21 00:34:29,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105834 to 97575. [2022-07-21 00:34:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97575 states, 97574 states have (on average 1.1812777994137782) internal successors, (115262), 97574 states have internal predecessors, (115262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97575 states to 97575 states and 115262 transitions. [2022-07-21 00:34:29,872 INFO L78 Accepts]: Start accepts. Automaton has 97575 states and 115262 transitions. Word has length 822 [2022-07-21 00:34:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:29,874 INFO L495 AbstractCegarLoop]: Abstraction has 97575 states and 115262 transitions. [2022-07-21 00:34:29,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:29,874 INFO L276 IsEmpty]: Start isEmpty. Operand 97575 states and 115262 transitions. [2022-07-21 00:34:29,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2022-07-21 00:34:29,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:29,885 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:29,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 00:34:29,885 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:29,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1158037052, now seen corresponding path program 1 times [2022-07-21 00:34:29,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:29,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559080802] [2022-07-21 00:34:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:29,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 386 proven. 313 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 00:34:30,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:30,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559080802] [2022-07-21 00:34:30,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559080802] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 00:34:30,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162999110] [2022-07-21 00:34:30,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:30,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:34:30,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:34:30,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 00:34:30,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 00:34:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:31,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 00:34:31,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 00:34:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-07-21 00:34:31,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 00:34:31,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162999110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:31,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 00:34:31,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 00:34:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565751860] [2022-07-21 00:34:31,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:31,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:34:31,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:31,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:34:31,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 00:34:31,354 INFO L87 Difference]: Start difference. First operand 97575 states and 115262 transitions. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:37,338 INFO L93 Difference]: Finished difference Result 214265 states and 258278 transitions. [2022-07-21 00:34:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 898 [2022-07-21 00:34:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:37,700 INFO L225 Difference]: With dead ends: 214265 [2022-07-21 00:34:37,701 INFO L226 Difference]: Without dead ends: 130349 [2022-07-21 00:34:37,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 899 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 00:34:37,770 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 1654 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4655 mSolverCounterSat, 1083 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1083 IncrementalHoareTripleChecker+Valid, 4655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:37,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 733 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1083 Valid, 4655 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-21 00:34:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130349 states. [2022-07-21 00:34:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130349 to 122151. [2022-07-21 00:34:38,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122151 states, 122150 states have (on average 1.201620957838723) internal successors, (146778), 122150 states have internal predecessors, (146778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:39,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122151 states to 122151 states and 146778 transitions. [2022-07-21 00:34:39,378 INFO L78 Accepts]: Start accepts. Automaton has 122151 states and 146778 transitions. Word has length 898 [2022-07-21 00:34:39,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:39,379 INFO L495 AbstractCegarLoop]: Abstraction has 122151 states and 146778 transitions. [2022-07-21 00:34:39,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:39,379 INFO L276 IsEmpty]: Start isEmpty. Operand 122151 states and 146778 transitions. [2022-07-21 00:34:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2022-07-21 00:34:39,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:39,416 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:39,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 00:34:39,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-21 00:34:39,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:39,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1165820487, now seen corresponding path program 1 times [2022-07-21 00:34:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:39,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989554905] [2022-07-21 00:34:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:39,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 202 proven. 401 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-21 00:34:40,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:40,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989554905] [2022-07-21 00:34:40,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989554905] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 00:34:40,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002279787] [2022-07-21 00:34:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:40,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:34:40,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:34:40,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 00:34:40,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 00:34:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:40,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 00:34:40,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 00:34:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2022-07-21 00:34:40,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 00:34:40,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002279787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:40,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 00:34:40,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-21 00:34:40,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866349138] [2022-07-21 00:34:40,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:40,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:34:40,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:40,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:34:40,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:34:40,715 INFO L87 Difference]: Start difference. First operand 122151 states and 146778 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:47,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:47,078 INFO L93 Difference]: Finished difference Result 296266 states and 357034 transitions. [2022-07-21 00:34:47,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 898 [2022-07-21 00:34:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:47,287 INFO L225 Difference]: With dead ends: 296266 [2022-07-21 00:34:47,287 INFO L226 Difference]: Without dead ends: 175482 [2022-07-21 00:34:47,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 899 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 00:34:47,329 INFO L413 NwaCegarLoop]: 1320 mSDtfsCounter, 1556 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4199 mSolverCounterSat, 1657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1657 IncrementalHoareTripleChecker+Valid, 4199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:47,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 1443 Invalid, 5856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1657 Valid, 4199 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-21 00:34:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175482 states. [2022-07-21 00:34:49,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175482 to 175393. [2022-07-21 00:34:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175393 states, 175392 states have (on average 1.1592889071337347) internal successors, (203330), 175392 states have internal predecessors, (203330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175393 states to 175393 states and 203330 transitions. [2022-07-21 00:34:49,746 INFO L78 Accepts]: Start accepts. Automaton has 175393 states and 203330 transitions. Word has length 898 [2022-07-21 00:34:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:34:49,746 INFO L495 AbstractCegarLoop]: Abstraction has 175393 states and 203330 transitions. [2022-07-21 00:34:49,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:49,747 INFO L276 IsEmpty]: Start isEmpty. Operand 175393 states and 203330 transitions. [2022-07-21 00:34:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2022-07-21 00:34:49,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:34:49,758 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:34:49,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 00:34:49,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 00:34:49,983 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:34:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:34:49,983 INFO L85 PathProgramCache]: Analyzing trace with hash -485799988, now seen corresponding path program 1 times [2022-07-21 00:34:49,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:34:49,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66932846] [2022-07-21 00:34:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:34:49,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:34:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:34:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1000 backedges. 755 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-21 00:34:50,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:34:50,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66932846] [2022-07-21 00:34:50,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66932846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:34:50,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:34:50,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:34:50,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788501562] [2022-07-21 00:34:50,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:34:50,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:34:50,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:34:50,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:34:50,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:50,613 INFO L87 Difference]: Start difference. First operand 175393 states and 203330 transitions. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:34:57,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:34:57,519 INFO L93 Difference]: Finished difference Result 409570 states and 477479 transitions. [2022-07-21 00:34:57,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:34:57,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1007 [2022-07-21 00:34:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:34:57,850 INFO L225 Difference]: With dead ends: 409570 [2022-07-21 00:34:57,850 INFO L226 Difference]: Without dead ends: 236909 [2022-07-21 00:34:57,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:34:57,935 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 1585 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4232 mSolverCounterSat, 2081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 6313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2081 IncrementalHoareTripleChecker+Valid, 4232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-21 00:34:57,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 752 Invalid, 6313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2081 Valid, 4232 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-21 00:34:58,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236909 states. [2022-07-21 00:35:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236909 to 227259. [2022-07-21 00:35:00,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227259 states, 227258 states have (on average 1.1712722984449393) internal successors, (266181), 227258 states have internal predecessors, (266181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227259 states to 227259 states and 266181 transitions. [2022-07-21 00:35:01,125 INFO L78 Accepts]: Start accepts. Automaton has 227259 states and 266181 transitions. Word has length 1007 [2022-07-21 00:35:01,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:35:01,126 INFO L495 AbstractCegarLoop]: Abstraction has 227259 states and 266181 transitions. [2022-07-21 00:35:01,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 227259 states and 266181 transitions. [2022-07-21 00:35:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2022-07-21 00:35:01,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:35:01,139 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:35:01,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 00:35:01,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:35:01,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:35:01,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2132130447, now seen corresponding path program 1 times [2022-07-21 00:35:01,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:35:01,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186150122] [2022-07-21 00:35:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:35:01,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:35:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:35:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-21 00:35:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:35:01,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186150122] [2022-07-21 00:35:01,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186150122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:35:01,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:35:01,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 00:35:01,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333635750] [2022-07-21 00:35:01,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:35:01,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 00:35:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:35:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 00:35:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:35:01,561 INFO L87 Difference]: Start difference. First operand 227259 states and 266181 transitions. Second operand has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:08,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:35:08,463 INFO L93 Difference]: Finished difference Result 483177 states and 570559 transitions. [2022-07-21 00:35:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 00:35:08,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1021 [2022-07-21 00:35:08,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:35:08,887 INFO L225 Difference]: With dead ends: 483177 [2022-07-21 00:35:08,887 INFO L226 Difference]: Without dead ends: 265479 [2022-07-21 00:35:09,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 00:35:09,004 INFO L413 NwaCegarLoop]: 2970 mSDtfsCounter, 1319 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4385 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 5143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 4385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-21 00:35:09,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 3147 Invalid, 5143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 4385 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-21 00:35:09,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265479 states. [2022-07-21 00:35:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265479 to 255915. [2022-07-21 00:35:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255915 states, 255914 states have (on average 1.1553178020741344) internal successors, (295662), 255914 states have internal predecessors, (295662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255915 states to 255915 states and 295662 transitions. [2022-07-21 00:35:12,397 INFO L78 Accepts]: Start accepts. Automaton has 255915 states and 295662 transitions. Word has length 1021 [2022-07-21 00:35:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:35:12,397 INFO L495 AbstractCegarLoop]: Abstraction has 255915 states and 295662 transitions. [2022-07-21 00:35:12,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 255915 states and 295662 transitions. [2022-07-21 00:35:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2022-07-21 00:35:12,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:35:12,407 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:35:12,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 00:35:12,408 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:35:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:35:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1367003819, now seen corresponding path program 1 times [2022-07-21 00:35:12,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:35:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638755609] [2022-07-21 00:35:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:35:12,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:35:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:35:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1531 backedges. 905 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2022-07-21 00:35:13,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:35:13,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638755609] [2022-07-21 00:35:13,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638755609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:35:13,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:35:13,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 00:35:13,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776504395] [2022-07-21 00:35:13,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:35:13,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 00:35:13,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:35:13,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 00:35:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:35:13,259 INFO L87 Difference]: Start difference. First operand 255915 states and 295662 transitions. Second operand has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 00:35:24,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:35:24,492 INFO L93 Difference]: Finished difference Result 724787 states and 858006 transitions. [2022-07-21 00:35:24,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 00:35:24,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1079 [2022-07-21 00:35:24,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:35:25,282 INFO L225 Difference]: With dead ends: 724787 [2022-07-21 00:35:25,282 INFO L226 Difference]: Without dead ends: 487990 [2022-07-21 00:35:25,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 00:35:25,392 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 3280 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 6350 mSolverCounterSat, 2562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 8912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2562 IncrementalHoareTripleChecker+Valid, 6350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-07-21 00:35:25,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3280 Valid, 1038 Invalid, 8912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2562 Valid, 6350 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-07-21 00:35:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487990 states.