./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/verifythis/tree_del_rec_incorrect.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 f1439388ab0e0331a25110b61c93eea2b0d4bab5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 10:12:27,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 10:12:27,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 10:12:27,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 10:12:27,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 10:12:27,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 10:12:27,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 10:12:27,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 10:12:27,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 10:12:27,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 10:12:27,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 10:12:27,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 10:12:27,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 10:12:27,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 10:12:27,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 10:12:27,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 10:12:27,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 10:12:27,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 10:12:27,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 10:12:27,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 10:12:27,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 10:12:27,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 10:12:27,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 10:12:27,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 10:12:27,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 10:12:27,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 10:12:27,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 10:12:27,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 10:12:27,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 10:12:27,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 10:12:27,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 10:12:27,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 10:12:27,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 10:12:27,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 10:12:27,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 10:12:27,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 10:12:27,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 10:12:27,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 10:12:27,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 10:12:27,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 10:12:27,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 10:12:27,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 10:12:27,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 10:12:27,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 10:12:27,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 10:12:27,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 10:12:27,447 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 10:12:27,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 10:12:27,448 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 10:12:27,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 10:12:27,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 10:12:27,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 10:12:27,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 10:12:27,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 10:12:27,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 10:12:27,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 10:12:27,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 10:12:27,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 10:12:27,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 10:12:27,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 10:12:27,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 10:12:27,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 10:12:27,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 10:12:27,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 10:12:27,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 10:12:27,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 10:12:27,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 10:12:27,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 10:12:27,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 10:12:27,453 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 10:12:27,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1439388ab0e0331a25110b61c93eea2b0d4bab5 [2021-07-05 10:12:27,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 10:12:27,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 10:12:27,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 10:12:27,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 10:12:27,794 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 10:12:27,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2021-07-05 10:12:27,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9e9fc4e1/d087d2446ceb47de9775bd5d68c8644d/FLAG5663ec60b [2021-07-05 10:12:28,239 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 10:12:28,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c [2021-07-05 10:12:28,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9e9fc4e1/d087d2446ceb47de9775bd5d68c8644d/FLAG5663ec60b [2021-07-05 10:12:28,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9e9fc4e1/d087d2446ceb47de9775bd5d68c8644d [2021-07-05 10:12:28,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 10:12:28,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 10:12:28,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 10:12:28,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 10:12:28,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 10:12:28,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e752141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28, skipping insertion in model container [2021-07-05 10:12:28,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 10:12:28,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 10:12:28,487 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c[618,631] [2021-07-05 10:12:28,497 WARN L1507 CHandler]: Possible shadowing of function min [2021-07-05 10:12:28,508 WARN L1507 CHandler]: Possible shadowing of function min [2021-07-05 10:12:28,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 10:12:28,558 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 10:12:28,572 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_rec_incorrect.c[618,631] [2021-07-05 10:12:28,586 WARN L1507 CHandler]: Possible shadowing of function min [2021-07-05 10:12:28,588 WARN L1507 CHandler]: Possible shadowing of function min [2021-07-05 10:12:28,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 10:12:28,627 INFO L208 MainTranslator]: Completed translation [2021-07-05 10:12:28,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28 WrapperNode [2021-07-05 10:12:28,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 10:12:28,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 10:12:28,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 10:12:28,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 10:12:28,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 10:12:28,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 10:12:28,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 10:12:28,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 10:12:28,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 10:12:28,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 10:12:28,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 10:12:28,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 10:12:28,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (1/1) ... [2021-07-05 10:12:28,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 10:12:28,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 10:12:28,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-05 10:12:28,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-05 10:12:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-07-05 10:12:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 10:12:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2021-07-05 10:12:28,813 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2021-07-05 10:12:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-05 10:12:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure min [2021-07-05 10:12:28,814 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2021-07-05 10:12:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-05 10:12:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-07-05 10:12:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-07-05 10:12:28,814 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-07-05 10:12:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 10:12:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-05 10:12:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure size [2021-07-05 10:12:28,815 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2021-07-05 10:12:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 10:12:28,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 10:12:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2021-07-05 10:12:28,816 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2021-07-05 10:12:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-05 10:12:29,230 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 10:12:29,231 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-07-05 10:12:29,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 10:12:29 BoogieIcfgContainer [2021-07-05 10:12:29,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 10:12:29,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 10:12:29,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 10:12:29,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 10:12:29,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 10:12:28" (1/3) ... [2021-07-05 10:12:29,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1c4253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 10:12:29, skipping insertion in model container [2021-07-05 10:12:29,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 10:12:28" (2/3) ... [2021-07-05 10:12:29,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1c4253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 10:12:29, skipping insertion in model container [2021-07-05 10:12:29,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 10:12:29" (3/3) ... [2021-07-05 10:12:29,239 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2021-07-05 10:12:29,245 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 10:12:29,246 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-07-05 10:12:29,298 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 10:12:29,304 INFO L329 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 10:12:29,304 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 10:12:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 55 states have (on average 1.309090909090909) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-07-05 10:12:29,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-07-05 10:12:29,325 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 10:12:29,326 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 10:12:29,326 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 10:12:29,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 10:12:29,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1095170897, now seen corresponding path program 1 times [2021-07-05 10:12:29,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 10:12:29,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835711841] [2021-07-05 10:12:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 10:12:29,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 10:12:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:29,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:29,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:29,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:29,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:29,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-05 10:12:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:29,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:29,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:29,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-07-05 10:12:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:29,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:29,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:29,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-07-05 10:12:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:29,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:29,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:29,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-07-05 10:12:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:29,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:29,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 10:12:29,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 10:12:29,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835711841] [2021-07-05 10:12:29,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835711841] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 10:12:29,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 10:12:29,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 10:12:29,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592491071] [2021-07-05 10:12:29,645 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 10:12:29,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 10:12:29,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 10:12:29,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-05 10:12:29,664 INFO L87 Difference]: Start difference. First operand has 81 states, 55 states have (on average 1.309090909090909) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-07-05 10:12:29,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 10:12:29,936 INFO L93 Difference]: Finished difference Result 142 states and 184 transitions. [2021-07-05 10:12:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-05 10:12:29,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2021-07-05 10:12:29,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 10:12:29,947 INFO L225 Difference]: With dead ends: 142 [2021-07-05 10:12:29,947 INFO L226 Difference]: Without dead ends: 53 [2021-07-05 10:12:29,951 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-05 10:12:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-07-05 10:12:29,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2021-07-05 10:12:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-07-05 10:12:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2021-07-05 10:12:30,005 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 30 [2021-07-05 10:12:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 10:12:30,007 INFO L442 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2021-07-05 10:12:30,007 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-07-05 10:12:30,007 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2021-07-05 10:12:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-07-05 10:12:30,012 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 10:12:30,013 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-05 10:12:30,013 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 10:12:30,013 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 10:12:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 10:12:30,015 INFO L82 PathProgramCache]: Analyzing trace with hash -394106319, now seen corresponding path program 1 times [2021-07-05 10:12:30,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 10:12:30,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823506383] [2021-07-05 10:12:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 10:12:30,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 10:12:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 10:12:30,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:30,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-05 10:12:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-07-05 10:12:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-07-05 10:12:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 10:12:30,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-07-05 10:12:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 10:12:30,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 10:12:30,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823506383] [2021-07-05 10:12:30,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823506383] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 10:12:30,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 10:12:30,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-05 10:12:30,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374622783] [2021-07-05 10:12:30,223 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-05 10:12:30,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 10:12:30,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-05 10:12:30,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-05 10:12:30,224 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-07-05 10:12:30,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 10:12:30,511 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2021-07-05 10:12:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-05 10:12:30,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2021-07-05 10:12:30,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 10:12:30,523 INFO L225 Difference]: With dead ends: 72 [2021-07-05 10:12:30,523 INFO L226 Difference]: Without dead ends: 55 [2021-07-05 10:12:30,524 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-07-05 10:12:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-07-05 10:12:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2021-07-05 10:12:30,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2021-07-05 10:12:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2021-07-05 10:12:30,545 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 30 [2021-07-05 10:12:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 10:12:30,547 INFO L442 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2021-07-05 10:12:30,547 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-07-05 10:12:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2021-07-05 10:12:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-07-05 10:12:30,553 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 10:12:30,553 INFO L525 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-07-05 10:12:30,554 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 10:12:30,554 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 10:12:30,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 10:12:30,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1904559170, now seen corresponding path program 1 times [2021-07-05 10:12:30,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 10:12:30,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390543737] [2021-07-05 10:12:30,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 10:12:30,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 10:12:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:30,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:30,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-05 10:12:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 10:12:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-07-05 10:12:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-07-05 10:12:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-05 10:12:30,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 10:12:30,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-05 10:12:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-05 10:12:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-07-05 10:12:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-05 10:12:30,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 10:12:30,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390543737] [2021-07-05 10:12:30,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390543737] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 10:12:30,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802751442] [2021-07-05 10:12:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 10:12:30,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 10:12:30,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 10:12:30,849 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) [2021-07-05 10:12:30,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-07-05 10:12:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:30,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-05 10:12:30,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 10:12:30,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:30,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:30,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 10:12:31,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 10:12:31,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 10:12:31,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 10:12:31,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 10:12:31,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 10:12:31,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 10:12:31,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-05 10:12:31,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-07-05 10:12:31,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 10:12:31,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-07-05 10:12:31,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 10:12:31,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 10:12:31,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-05 10:12:31,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 10:12:31,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 10:12:31,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-05 10:12:31,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 10:12:31,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 10:12:31,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-05 10:12:31,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 10:12:31,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 10:12:31,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-05 10:12:31,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-05 10:12:31,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,207 INFO L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-07-05 10:12:31,208 INFO L142 QuantifierPusher]: treesize reduction 16, result has 5.9 percent of original size [2021-07-05 10:12:31,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-05 10:12:31,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802751442] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 10:12:31,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-05 10:12:31,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 11 [2021-07-05 10:12:31,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961315673] [2021-07-05 10:12:31,244 INFO L425 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-05 10:12:31,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 10:12:31,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-05 10:12:31,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-07-05 10:12:31,245 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-07-05 10:12:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 10:12:31,573 INFO L93 Difference]: Finished difference Result 76 states and 97 transitions. [2021-07-05 10:12:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-05 10:12:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 42 [2021-07-05 10:12:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 10:12:31,575 INFO L225 Difference]: With dead ends: 76 [2021-07-05 10:12:31,575 INFO L226 Difference]: Without dead ends: 55 [2021-07-05 10:12:31,576 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 207.5ms TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-07-05 10:12:31,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-07-05 10:12:31,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2021-07-05 10:12:31,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 12 states have call successors, (12), 4 states have call predecessors, (12), 6 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2021-07-05 10:12:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-07-05 10:12:31,583 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 42 [2021-07-05 10:12:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 10:12:31,583 INFO L442 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-07-05 10:12:31,583 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-07-05 10:12:31,583 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-07-05 10:12:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-05 10:12:31,585 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 10:12:31,585 INFO L525 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-07-05 10:12:31,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-07-05 10:12:31,806 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 10:12:31,807 INFO L374 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 10:12:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 10:12:31,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1838253317, now seen corresponding path program 1 times [2021-07-05 10:12:31,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 10:12:31,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829309913] [2021-07-05 10:12:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 10:12:31,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 10:12:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:31,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-05 10:12:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:31,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-05 10:12:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:31,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-05 10:12:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:31,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-07-05 10:12:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:31,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 10:12:31,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 10:12:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-07-05 10:12:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:31,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-05 10:12:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:31,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-05 10:12:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:31,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-07-05 10:12:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:31,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:31,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-07-05 10:12:31,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 10:12:31,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829309913] [2021-07-05 10:12:31,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829309913] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 10:12:31,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 10:12:31,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-05 10:12:31,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850797354] [2021-07-05 10:12:31,972 INFO L425 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-05 10:12:31,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 10:12:31,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-05 10:12:31,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-07-05 10:12:31,973 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-07-05 10:12:32,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 10:12:32,235 INFO L93 Difference]: Finished difference Result 86 states and 110 transitions. [2021-07-05 10:12:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-05 10:12:32,236 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 52 [2021-07-05 10:12:32,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 10:12:32,237 INFO L225 Difference]: With dead ends: 86 [2021-07-05 10:12:32,237 INFO L226 Difference]: Without dead ends: 57 [2021-07-05 10:12:32,238 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.6ms TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-07-05 10:12:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-07-05 10:12:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2021-07-05 10:12:32,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 37 states have internal predecessors, (39), 12 states have call successors, (12), 4 states have call predecessors, (12), 7 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2021-07-05 10:12:32,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2021-07-05 10:12:32,245 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 52 [2021-07-05 10:12:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 10:12:32,246 INFO L442 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2021-07-05 10:12:32,246 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-07-05 10:12:32,246 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2021-07-05 10:12:32,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-07-05 10:12:32,247 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 10:12:32,247 INFO L525 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-07-05 10:12:32,248 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-05 10:12:32,248 INFO L374 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 10:12:32,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 10:12:32,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1543692906, now seen corresponding path program 1 times [2021-07-05 10:12:32,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 10:12:32,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27558403] [2021-07-05 10:12:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 10:12:32,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 10:12:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:32,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:32,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:32,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-05 10:12:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:32,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 10:12:32,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-07-05 10:12:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:32,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-07-05 10:12:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-07-05 10:12:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-05 10:12:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:32,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-05 10:12:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:32,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-07-05 10:12:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-07-05 10:12:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:32,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-07-05 10:12:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 10:12:32,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-07-05 10:12:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 10:12:32,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 10:12:32,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 10:12:32,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 10:12:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-07-05 10:12:32,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 10:12:32,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27558403] [2021-07-05 10:12:32,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27558403] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 10:12:32,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 10:12:32,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-05 10:12:32,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414537591] [2021-07-05 10:12:32,396 INFO L425 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-05 10:12:32,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 10:12:32,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-05 10:12:32,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-07-05 10:12:32,396 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2021-07-05 10:12:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 10:12:32,658 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2021-07-05 10:12:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-05 10:12:32,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 65 [2021-07-05 10:12:32,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 10:12:32,659 INFO L225 Difference]: With dead ends: 61 [2021-07-05 10:12:32,660 INFO L226 Difference]: Without dead ends: 57 [2021-07-05 10:12:32,660 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 99.2ms TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-07-05 10:12:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-07-05 10:12:32,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-07-05 10:12:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 39 states have internal predecessors, (40), 12 states have call successors, (12), 4 states have call predecessors, (12), 8 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2021-07-05 10:12:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2021-07-05 10:12:32,667 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 65 [2021-07-05 10:12:32,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 10:12:32,668 INFO L442 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2021-07-05 10:12:32,668 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2021-07-05 10:12:32,668 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2021-07-05 10:12:32,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-07-05 10:12:32,669 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 10:12:32,669 INFO L525 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2021-07-05 10:12:32,669 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-05 10:12:32,670 INFO L374 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 10:12:32,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 10:12:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1767582969, now seen corresponding path program 1 times [2021-07-05 10:12:32,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 10:12:32,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474034172] [2021-07-05 10:12:32,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 10:12:32,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 10:12:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 10:12:32,698 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 10:12:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 10:12:32,723 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 10:12:32,750 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-05 10:12:32,750 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-05 10:12:32,752 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-05 10:12:32,753 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 10:12:32,756 INFO L303 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was UNSAFE (1/4) [2021-07-05 10:12:32,772 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,773 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,774 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,774 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,775 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,775 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,776 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,776 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,776 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,776 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,776 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,776 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 10:12:32 BoogieIcfgContainer [2021-07-05 10:12:32,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 10:12:32,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 10:12:32,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 10:12:32,806 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 10:12:32,806 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 10:12:29" (3/4) ... [2021-07-05 10:12:32,808 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-05 10:12:32,811 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,811 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,811 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,811 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,812 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,812 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,812 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,813 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,813 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,813 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,813 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,813 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2021-07-05 10:12:32,851 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 10:12:32,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 10:12:32,852 INFO L168 Benchmark]: Toolchain (without parser) took 4581.85 ms. Allocated memory was 54.5 MB in the beginning and 104.9 MB in the end (delta: 50.3 MB). Free memory was 31.3 MB in the beginning and 36.1 MB in the end (delta: -4.8 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. [2021-07-05 10:12:32,853 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 54.5 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 10:12:32,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.78 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.1 MB in the beginning and 51.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-07-05 10:12:32,853 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.29 ms. Allocated memory is still 71.3 MB. Free memory was 51.3 MB in the beginning and 49.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 10:12:32,853 INFO L168 Benchmark]: Boogie Preprocessor took 41.78 ms. Allocated memory is still 71.3 MB. Free memory was 49.5 MB in the beginning and 47.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 10:12:32,853 INFO L168 Benchmark]: RCFGBuilder took 502.56 ms. Allocated memory is still 71.3 MB. Free memory was 47.6 MB in the beginning and 31.1 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-07-05 10:12:32,854 INFO L168 Benchmark]: TraceAbstraction took 3571.74 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 30.7 MB in the beginning and 42.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2021-07-05 10:12:32,854 INFO L168 Benchmark]: Witness Printer took 46.01 ms. Allocated memory is still 104.9 MB. Free memory was 42.4 MB in the beginning and 36.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-07-05 10:12:32,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 54.5 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.78 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.1 MB in the beginning and 51.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.29 ms. Allocated memory is still 71.3 MB. Free memory was 51.3 MB in the beginning and 49.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.78 ms. Allocated memory is still 71.3 MB. Free memory was 49.5 MB in the beginning and 47.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 502.56 ms. Allocated memory is still 71.3 MB. Free memory was 47.6 MB in the beginning and 31.1 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3571.74 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 30.7 MB in the beginning and 42.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Witness Printer took 46.01 ms. Allocated memory is still 104.9 MB. Free memory was 42.4 MB in the beginning and 36.1 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L98] CALL nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L30] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-2:0}, n={-2:0}, nondet_tree()={0:0}] [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; VAL [\result={0:0}] [L31] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-2:0}, n={-2:0}, nondet_tree()={0:0}] [L31] n->right = nondet_tree() [L32] return n; VAL [\result={-2:0}, malloc(sizeof(struct node))={-2:0}, n={-2:0}] [L98] RET nondet_tree() [L76] CALL, EXPR min(t) VAL [n={-2:0}] [L37] COND FALSE !(!n) [L40] EXPR n->left VAL [n={-2:0}, n={-2:0}, n->left={0:0}] [L40] CALL, EXPR min(n->left) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L40] RET, EXPR min(n->left) VAL [min(n->left)=2147483647, n={-2:0}, n={-2:0}, n->left={0:0}] [L40] int a = min(n->left); [L41] EXPR n->right VAL [a=2147483647, n={-2:0}, n={-2:0}, n->right={0:0}] [L41] CALL, EXPR min(n->right) VAL [n={0:0}] [L37] COND TRUE !n [L38] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L41] RET, EXPR min(n->right) VAL [a=2147483647, min(n->right)=2147483647, n={-2:0}, n={-2:0}, n->right={0:0}] [L41] int b = min(n->right); [L42] COND TRUE a <= b [L42] return a; VAL [\result=2147483647, a=2147483647, b=2147483647, n={-2:0}, n={-2:0}] [L76] RET, EXPR min(t) [L76] int a = min(t); [L77] int b; [L79] CALL, EXPR size(t) VAL [t={-2:0}] [L71] COND FALSE !(!t) [L72] EXPR t->left VAL [t={-2:0}, t={-2:0}, t->left={0:0}] [L72] CALL, EXPR size(t->left) VAL [t={0:0}] [L71] COND TRUE !t [L71] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L72] RET, EXPR size(t->left) VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}] [L72] EXPR t->right VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L72] CALL, EXPR size(t->right) VAL [t={0:0}] [L71] COND TRUE !t [L71] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L72] RET, EXPR size(t->right) VAL [size(t->left)=0, size(t->right)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L72] return size(t->left) + size(t->right) + 1; [L79] RET, EXPR size(t) [L79] int n = size(t); [L10] COND FALSE !(!cond) [L81] int *x = calloc(n, sizeof(int)); [L82] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-3:0}, t={-2:0}] [L60] COND FALSE !(!t) [L63] EXPR t->left VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=1, t={-2:0}, t={-2:0}, t->left={0:0}] [L63] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-3:0}, t={0:0}] [L60] COND TRUE !t [L61] return i; VAL [\old(i)=1, \result=1, a={-3:0}, a={-3:0}, i=1, t={0:0}, t={0:0}] [L63] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=1, t={-2:0}, t={-2:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L63] i = tree_inorder(t->left, a, i) [L64] EXPR i++ [L64] EXPR t->data [L64] a[i++] = t->data [L65] EXPR t->right VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=2, t={-2:0}, t={-2:0}, t->right={0:0}] [L65] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-3:0}, t={0:0}] [L60] COND TRUE !t [L61] return i; VAL [\old(i)=2, \result=2, a={-3:0}, a={-3:0}, i=2, t={0:0}, t={0:0}] [L65] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={-3:0}, a={-3:0}, i=2, t={-2:0}, t={-2:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L65] i = tree_inorder(t->right, a, i) [L66] return i; VAL [\old(i)=1, \result=2, a={-3:0}, a={-3:0}, i=2, t={-2:0}, t={-2:0}] [L82] RET tree_inorder(t, x, n) [L83] x[0] [L16] COND TRUE !cond [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 6 procedures, 81 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3459.4ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 23.6ms, AutomataDifference: 1467.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 268 SDtfs, 206 SDslu, 726 SDs, 0 SdLazy, 832 SolverSat, 133 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 829.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 514.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 83.3ms AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 49.8ms SsaConstructionTime, 184.0ms SatisfiabilityAnalysisTime, 1154.2ms InterpolantComputationTime, 338 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 744 SizeOfPredicates, 8 NumberOfNonLiveVariables, 236 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 74/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-07-05 10:12:32,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...