./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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_iter_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 74289de26b6d11ce9d727281c5976611ee27d2e8 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.25-9a8b2e8 [2020-10-20 01:10:10,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:10:10,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:10:10,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:10:10,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:10:10,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:10:10,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:10:10,351 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:10:10,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:10:10,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:10:10,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:10:10,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:10:10,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:10:10,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:10:10,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:10:10,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:10:10,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:10:10,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:10:10,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:10:10,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:10:10,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:10:10,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:10:10,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:10:10,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:10:10,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:10:10,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:10:10,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:10:10,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:10:10,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:10:10,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:10:10,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:10:10,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:10:10,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:10:10,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:10:10,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:10:10,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:10:10,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:10:10,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:10:10,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:10:10,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:10:10,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:10:10,407 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:10:10,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:10:10,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:10:10,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:10:10,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:10:10,431 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:10:10,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:10:10,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:10:10,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:10:10,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:10:10,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:10:10,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:10:10,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:10:10,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:10:10,434 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:10:10,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:10:10,434 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:10:10,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:10:10,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:10:10,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:10:10,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:10:10,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:10:10,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:10:10,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:10:10,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:10:10,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:10:10,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:10:10,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:10:10,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:10:10,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:10:10,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 74289de26b6d11ce9d727281c5976611ee27d2e8 [2020-10-20 01:10:10,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:10:10,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:10:10,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:10:10,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:10:10,669 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:10:10,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2020-10-20 01:10:10,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf484f98/99c1b445a4404a65abcfd510832e521a/FLAGaa4cd9108 [2020-10-20 01:10:11,251 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:10:11,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/tree_del_iter_incorrect.c [2020-10-20 01:10:11,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf484f98/99c1b445a4404a65abcfd510832e521a/FLAGaa4cd9108 [2020-10-20 01:10:11,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf484f98/99c1b445a4404a65abcfd510832e521a [2020-10-20 01:10:11,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:10:11,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:10:11,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:10:11,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:10:11,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:10:11,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:10:11" (1/1) ... [2020-10-20 01:10:11,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e6d4a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:11, skipping insertion in model container [2020-10-20 01:10:11,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:10:11" (1/1) ... [2020-10-20 01:10:11,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:10:11,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:10:11,969 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-20 01:10:11,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:10:12,004 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:10:12,025 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-20 01:10:12,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:10:12,062 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:10:12,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12 WrapperNode [2020-10-20 01:10:12,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:10:12,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:10:12,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:10:12,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:10:12,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (1/1) ... [2020-10-20 01:10:12,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (1/1) ... [2020-10-20 01:10:12,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:10:12,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:10:12,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:10:12,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:10:12,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (1/1) ... [2020-10-20 01:10:12,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (1/1) ... [2020-10-20 01:10:12,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (1/1) ... [2020-10-20 01:10:12,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (1/1) ... [2020-10-20 01:10:12,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (1/1) ... [2020-10-20 01:10:12,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (1/1) ... [2020-10-20 01:10:12,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (1/1) ... [2020-10-20 01:10:12,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:10:12,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:10:12,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:10:12,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:10:12,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:10:12,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 01:10:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:10:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 01:10:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-20 01:10:12,257 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-20 01:10:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 01:10:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 01:10:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-20 01:10:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-20 01:10:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:10:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 01:10:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-20 01:10:12,261 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-20 01:10:12,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:10:12,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:10:12,262 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-20 01:10:12,262 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-20 01:10:12,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 01:10:12,797 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:10:12,798 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-10-20 01:10:12,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:10:12 BoogieIcfgContainer [2020-10-20 01:10:12,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:10:12,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:10:12,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:10:12,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:10:12,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:10:11" (1/3) ... [2020-10-20 01:10:12,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71dc8933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:10:12, skipping insertion in model container [2020-10-20 01:10:12,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:10:12" (2/3) ... [2020-10-20 01:10:12,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71dc8933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:10:12, skipping insertion in model container [2020-10-20 01:10:12,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:10:12" (3/3) ... [2020-10-20 01:10:12,820 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-10-20 01:10:12,832 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:10:12,840 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-20 01:10:12,854 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-20 01:10:12,877 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:10:12,877 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:10:12,878 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:10:12,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:10:12,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:10:12,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:10:12,878 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:10:12,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:10:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2020-10-20 01:10:12,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:10:12,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:12,908 INFO L422 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] [2020-10-20 01:10:12,908 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:12,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:12,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1820768447, now seen corresponding path program 1 times [2020-10-20 01:10:12,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:12,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722076495] [2020-10-20 01:10:12,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 01:10:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-20 01:10:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-20 01:10:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:10:13,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722076495] [2020-10-20 01:10:13,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:10:13,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 01:10:13,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197900619] [2020-10-20 01:10:13,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 01:10:13,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:10:13,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 01:10:13,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:10:13,301 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 4 states. [2020-10-20 01:10:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:10:13,587 INFO L93 Difference]: Finished difference Result 140 states and 184 transitions. [2020-10-20 01:10:13,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 01:10:13,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-20 01:10:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:10:13,601 INFO L225 Difference]: With dead ends: 140 [2020-10-20 01:10:13,602 INFO L226 Difference]: Without dead ends: 78 [2020-10-20 01:10:13,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 01:10:13,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-20 01:10:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2020-10-20 01:10:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-20 01:10:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2020-10-20 01:10:13,666 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 30 [2020-10-20 01:10:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:10:13,667 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2020-10-20 01:10:13,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 01:10:13,667 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2020-10-20 01:10:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 01:10:13,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:13,672 INFO L422 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] [2020-10-20 01:10:13,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:10:13,673 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:13,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1773134271, now seen corresponding path program 1 times [2020-10-20 01:10:13,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:13,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469995238] [2020-10-20 01:10:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 01:10:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-20 01:10:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-20 01:10:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:10:13,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469995238] [2020-10-20 01:10:13,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:10:13,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 01:10:13,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972116386] [2020-10-20 01:10:13,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 01:10:13,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:10:13,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 01:10:13,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 01:10:13,907 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand 7 states. [2020-10-20 01:10:14,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:10:14,213 INFO L93 Difference]: Finished difference Result 130 states and 164 transitions. [2020-10-20 01:10:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 01:10:14,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-20 01:10:14,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:10:14,217 INFO L225 Difference]: With dead ends: 130 [2020-10-20 01:10:14,217 INFO L226 Difference]: Without dead ends: 80 [2020-10-20 01:10:14,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 01:10:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-20 01:10:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2020-10-20 01:10:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-20 01:10:14,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2020-10-20 01:10:14,237 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 30 [2020-10-20 01:10:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:10:14,237 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2020-10-20 01:10:14,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 01:10:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2020-10-20 01:10:14,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-20 01:10:14,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:14,240 INFO L422 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] [2020-10-20 01:10:14,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 01:10:14,241 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:14,242 INFO L82 PathProgramCache]: Analyzing trace with hash 459981034, now seen corresponding path program 1 times [2020-10-20 01:10:14,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:14,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889996297] [2020-10-20 01:10:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 01:10:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-20 01:10:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-20 01:10:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 01:10:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 01:10:14,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889996297] [2020-10-20 01:10:14,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725798991] [2020-10-20 01:10:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:10:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:14,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-20 01:10:14,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:10:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 01:10:14,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:10:14,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2020-10-20 01:10:14,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004301319] [2020-10-20 01:10:14,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 01:10:14,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:10:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 01:10:14,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:10:14,669 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand 10 states. [2020-10-20 01:10:15,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:10:15,059 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2020-10-20 01:10:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 01:10:15,060 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-20 01:10:15,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:10:15,063 INFO L225 Difference]: With dead ends: 136 [2020-10-20 01:10:15,063 INFO L226 Difference]: Without dead ends: 80 [2020-10-20 01:10:15,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-20 01:10:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-20 01:10:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-10-20 01:10:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-20 01:10:15,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2020-10-20 01:10:15,078 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 42 [2020-10-20 01:10:15,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:10:15,078 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2020-10-20 01:10:15,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 01:10:15,079 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2020-10-20 01:10:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-20 01:10:15,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:15,081 INFO L422 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] [2020-10-20 01:10:15,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 01:10:15,298 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:15,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:15,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1512984621, now seen corresponding path program 1 times [2020-10-20 01:10:15,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:15,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896480559] [2020-10-20 01:10:15,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:15,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:15,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 01:10:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:15,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 01:10:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 01:10:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:15,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 01:10:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:15,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:15,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-20 01:10:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:15,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 01:10:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:15,557 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-20 01:10:15,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896480559] [2020-10-20 01:10:15,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:10:15,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 01:10:15,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635885820] [2020-10-20 01:10:15,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 01:10:15,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:10:15,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 01:10:15,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-20 01:10:15,560 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand 10 states. [2020-10-20 01:10:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:10:15,911 INFO L93 Difference]: Finished difference Result 136 states and 173 transitions. [2020-10-20 01:10:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 01:10:15,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-20 01:10:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:10:15,914 INFO L225 Difference]: With dead ends: 136 [2020-10-20 01:10:15,914 INFO L226 Difference]: Without dead ends: 82 [2020-10-20 01:10:15,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-20 01:10:15,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-20 01:10:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-10-20 01:10:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-20 01:10:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2020-10-20 01:10:15,928 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 52 [2020-10-20 01:10:15,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:10:15,928 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2020-10-20 01:10:15,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 01:10:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2020-10-20 01:10:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-20 01:10:15,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:15,932 INFO L422 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] [2020-10-20 01:10:15,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 01:10:15,932 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:15,933 INFO L82 PathProgramCache]: Analyzing trace with hash -2124599638, now seen corresponding path program 1 times [2020-10-20 01:10:15,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:15,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731810942] [2020-10-20 01:10:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-20 01:10:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-20 01:10:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-20 01:10:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-20 01:10:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-20 01:10:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 01:10:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-20 01:10:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-20 01:10:16,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 01:10:16,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731810942] [2020-10-20 01:10:16,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403644123] [2020-10-20 01:10:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:10:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:10:16,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-20 01:10:16,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:10:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-20 01:10:16,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:10:16,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14 [2020-10-20 01:10:16,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341377934] [2020-10-20 01:10:16,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 01:10:16,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:10:16,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 01:10:16,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-20 01:10:16,366 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 14 states. [2020-10-20 01:10:16,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:10:16,863 INFO L93 Difference]: Finished difference Result 129 states and 163 transitions. [2020-10-20 01:10:16,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 01:10:16,864 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-20 01:10:16,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:10:16,868 INFO L225 Difference]: With dead ends: 129 [2020-10-20 01:10:16,868 INFO L226 Difference]: Without dead ends: 82 [2020-10-20 01:10:16,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2020-10-20 01:10:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-20 01:10:16,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-20 01:10:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-20 01:10:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 104 transitions. [2020-10-20 01:10:16,880 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 104 transitions. Word has length 65 [2020-10-20 01:10:16,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:10:16,881 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 104 transitions. [2020-10-20 01:10:16,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 01:10:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 104 transitions. [2020-10-20 01:10:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-20 01:10:16,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:10:16,885 INFO L422 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] [2020-10-20 01:10:17,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:10:17,098 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:10:17,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:10:17,099 INFO L82 PathProgramCache]: Analyzing trace with hash 334261757, now seen corresponding path program 1 times [2020-10-20 01:10:17,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:10:17,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921616235] [2020-10-20 01:10:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:10:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:10:17,136 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:10:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 01:10:17,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 01:10:17,207 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 01:10:17,207 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 01:10:17,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 01:10:17,237 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,238 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,238 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,239 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,241 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,241 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,242 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,242 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,242 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,242 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,243 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,243 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:10:17 BoogieIcfgContainer [2020-10-20 01:10:17,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:10:17,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:10:17,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:10:17,288 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:10:17,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:10:12" (3/4) ... [2020-10-20 01:10:17,291 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 01:10:17,297 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,297 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,297 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,297 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,299 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,299 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,299 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,299 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,300 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,300 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,300 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,300 WARN L417 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr : $Pointer$ not handled [2020-10-20 01:10:17,417 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:10:17,418 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:10:17,420 INFO L168 Benchmark]: Toolchain (without parser) took 5755.88 ms. Allocated memory was 34.6 MB in the beginning and 74.4 MB in the end (delta: 39.8 MB). Free memory was 11.2 MB in the beginning and 52.8 MB in the end (delta: -41.6 MB). Peak memory consumption was 37.9 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:17,421 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 34.1 MB. Free memory was 19.2 MB in the beginning and 19.1 MB in the end (delta: 55.0 kB). Peak memory consumption was 55.0 kB. Max. memory is 14.3 GB. [2020-10-20 01:10:17,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.94 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 10.4 MB in the beginning and 23.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:17,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.41 ms. Allocated memory is still 43.0 MB. Free memory was 23.3 MB in the beginning and 21.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:17,422 INFO L168 Benchmark]: Boogie Preprocessor took 46.58 ms. Allocated memory is still 43.0 MB. Free memory was 21.0 MB in the beginning and 18.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:17,422 INFO L168 Benchmark]: RCFGBuilder took 631.47 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 18.6 MB in the beginning and 12.3 MB in the end (delta: 6.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:17,423 INFO L168 Benchmark]: TraceAbstraction took 4478.89 ms. Allocated memory was 45.1 MB in the beginning and 70.3 MB in the end (delta: 25.2 MB). Free memory was 28.9 MB in the beginning and 14.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 39.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:17,424 INFO L168 Benchmark]: Witness Printer took 129.96 ms. Allocated memory was 70.3 MB in the beginning and 74.4 MB in the end (delta: 4.2 MB). Free memory was 14.5 MB in the beginning and 52.8 MB in the end (delta: -38.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. [2020-10-20 01:10:17,427 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 34.1 MB. Free memory was 19.2 MB in the beginning and 19.1 MB in the end (delta: 55.0 kB). Peak memory consumption was 55.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 392.94 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 10.4 MB in the beginning and 23.3 MB in the end (delta: -12.9 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 56.41 ms. Allocated memory is still 43.0 MB. Free memory was 23.3 MB in the beginning and 21.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 46.58 ms. Allocated memory is still 43.0 MB. Free memory was 21.0 MB in the beginning and 18.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 631.47 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 18.6 MB in the beginning and 12.3 MB in the end (delta: 6.3 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4478.89 ms. Allocated memory was 45.1 MB in the beginning and 70.3 MB in the end (delta: 25.2 MB). Free memory was 28.9 MB in the beginning and 14.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 39.6 MB. Max. memory is 14.3 GB. * Witness Printer took 129.96 ms. Allocated memory was 70.3 MB in the beginning and 74.4 MB in the end (delta: 4.2 MB). Free memory was 14.5 MB in the beginning and 52.8 MB in the end (delta: -38.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 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: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L105] 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}] [L105] RET nondet_tree() [L83] 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}] [L83] RET, EXPR min(t) [L83] int a = min(t); [L84] int b; [L86] CALL, EXPR size(t) VAL [t={-2:0}] [L78] COND FALSE !(!t) [L79] EXPR t->left VAL [t={-2:0}, t={-2:0}, t->left={0:0}] [L79] CALL, EXPR size(t->left) VAL [t={0:0}] [L78] COND TRUE !t [L78] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L79] RET, EXPR size(t->left) VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}] [L79] EXPR t->right VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L79] CALL, EXPR size(t->right) VAL [t={0:0}] [L78] COND TRUE !t [L78] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L79] 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}] [L79] return size(t->left) + size(t->right) + 1; [L86] RET, EXPR size(t) [L86] int n = size(t); [L10] COND FALSE !(!cond) [L88] int *x = calloc(n, sizeof(int)); [L89] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-3:0}, t={-2:0}] [L67] COND FALSE !(!t) [L70] 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}] [L70] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-3:0}, t={0:0}] [L67] COND TRUE !t [L68] return i; VAL [\old(i)=1, \result=1, a={-3:0}, a={-3:0}, i=1, t={0:0}, t={0:0}] [L70] 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] [L70] i = tree_inorder(t->left, a, i) [L71] EXPR i++ [L71] EXPR t->data [L71] a[i++] = t->data [L72] 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}] [L72] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-3:0}, t={0:0}] [L67] COND TRUE !t [L68] return i; VAL [\old(i)=2, \result=2, a={-3:0}, a={-3:0}, i=2, t={0:0}, t={0:0}] [L72] 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] [L72] i = tree_inorder(t->right, a, i) [L73] return i; VAL [\old(i)=1, \result=2, a={-3:0}, a={-3:0}, i=2, t={-2:0}, t={-2:0}] [L89] RET tree_inorder(t, x, n) [L90] x[0] [L16] COND TRUE !cond [L14] __assert_fail("0", "tree_del_iter_incorrect.c", 14, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 82 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 383 SDtfs, 375 SDslu, 1435 SDs, 0 SdLazy, 1063 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 160 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 403 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 319 ConstructedInterpolants, 0 QuantifiedInterpolants, 51451 SizeOfPredicates, 17 NumberOfNonLiveVariables, 590 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 103/111 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! Received shutdown request...