/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:19:34,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:19:34,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:19:34,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:19:34,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:19:34,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:19:34,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:19:34,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:19:34,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:19:34,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:19:34,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:19:34,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:19:34,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:19:34,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:19:34,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:19:34,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:19:34,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:19:34,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:19:34,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:19:34,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:19:34,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:19:34,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:19:34,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:19:34,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:19:34,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:19:34,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:19:34,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:19:34,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:19:34,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:19:34,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:19:34,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:19:34,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:19:34,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:19:34,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:19:34,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:19:34,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:19:34,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:19:34,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:19:34,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:19:34,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:19:34,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:19:34,318 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:19:34,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:19:34,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:19:34,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:19:34,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:19:34,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:19:34,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:19:34,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:19:34,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:19:34,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:19:34,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:19:34,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:19:34,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:19:34,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:19:34,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:19:34,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:19:34,351 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:19:34,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:19:34,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:19:34,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:19:34,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:19:34,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:19:34,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:19:34,352 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:19:34,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:19:34,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:19:34,664 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:19:34,666 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:19:34,666 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:19:34,667 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-07-07 13:19:34,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c56d8712e/5e87779fd51c4cfdb51fb1186e1898d2/FLAG50fb521b2 [2020-07-07 13:19:35,255 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:19:35,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-07-07 13:19:35,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c56d8712e/5e87779fd51c4cfdb51fb1186e1898d2/FLAG50fb521b2 [2020-07-07 13:19:35,598 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c56d8712e/5e87779fd51c4cfdb51fb1186e1898d2 [2020-07-07 13:19:35,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:19:35,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:19:35,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:19:35,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:19:35,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:19:35,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:19:35" (1/1) ... [2020-07-07 13:19:35,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f17481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:35, skipping insertion in model container [2020-07-07 13:19:35,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:19:35" (1/1) ... [2020-07-07 13:19:35,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:19:35,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:19:35,853 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-07 13:19:35,855 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-07 13:19:35,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:19:35,890 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:19:36,000 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-07 13:19:36,002 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-07 13:19:36,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:19:36,040 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:19:36,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:36 WrapperNode [2020-07-07 13:19:36,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:19:36,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:19:36,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:19:36,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:19:36,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:36" (1/1) ... [2020-07-07 13:19:36,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:36" (1/1) ... [2020-07-07 13:19:36,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:36" (1/1) ... [2020-07-07 13:19:36,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:36" (1/1) ... [2020-07-07 13:19:36,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:36" (1/1) ... [2020-07-07 13:19:36,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:36" (1/1) ... [2020-07-07 13:19:36,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:36" (1/1) ... [2020-07-07 13:19:36,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:19:36,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:19:36,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:19:36,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:19:36,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:36" (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 [2020-07-07 13:19:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:19:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:19:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 13:19:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:19:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-07-07 13:19:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-07-07 13:19:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-07-07 13:19:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-07-07 13:19:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-07-07 13:19:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-07-07 13:19:36,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:19:36,171 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-07 13:19:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:19:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:19:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:19:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:19:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-07 13:19:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:19:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 13:19:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:19:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:19:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-07-07 13:19:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:19:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:19:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:19:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-07-07 13:19:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:19:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-07-07 13:19:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:19:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:19:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-07-07 13:19:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-07-07 13:19:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-07-07 13:19:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:19:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-07 13:19:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:19:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:19:36,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:19:36,755 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:19:36,756 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:19:36,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:19:36 BoogieIcfgContainer [2020-07-07 13:19:36,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:19:36,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:19:36,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:19:36,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:19:36,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:19:35" (1/3) ... [2020-07-07 13:19:36,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5c9e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:19:36, skipping insertion in model container [2020-07-07 13:19:36,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:19:36" (2/3) ... [2020-07-07 13:19:36,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5c9e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:19:36, skipping insertion in model container [2020-07-07 13:19:36,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:19:36" (3/3) ... [2020-07-07 13:19:36,775 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2020-07-07 13:19:36,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:19:36,797 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:19:36,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:19:36,835 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:19:36,836 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:19:36,836 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:19:36,836 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:19:36,836 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:19:36,837 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:19:36,837 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:19:36,837 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:19:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-07-07 13:19:36,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-07 13:19:36,878 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:19:36,879 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:19:36,880 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:19:36,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:19:36,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1242734485, now seen corresponding path program 1 times [2020-07-07 13:19:36,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:19:36,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81149309] [2020-07-07 13:19:36,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:19:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:37,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:19:37,410 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:19:37,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81149309] [2020-07-07 13:19:37,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:19:37,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 13:19:37,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479597551] [2020-07-07 13:19:37,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 13:19:37,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:19:37,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 13:19:37,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:19:37,443 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 11 states. [2020-07-07 13:19:38,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:19:38,766 INFO L93 Difference]: Finished difference Result 324 states and 379 transitions. [2020-07-07 13:19:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 13:19:38,769 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-07-07 13:19:38,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:19:38,786 INFO L225 Difference]: With dead ends: 324 [2020-07-07 13:19:38,787 INFO L226 Difference]: Without dead ends: 188 [2020-07-07 13:19:38,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-07-07 13:19:38,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-07-07 13:19:38,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2020-07-07 13:19:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-07-07 13:19:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2020-07-07 13:19:38,878 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 60 [2020-07-07 13:19:38,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:19:38,879 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2020-07-07 13:19:38,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 13:19:38,879 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2020-07-07 13:19:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-07 13:19:38,885 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:19:38,885 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:19:38,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:19:38,886 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:19:38,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:19:38,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1686429873, now seen corresponding path program 1 times [2020-07-07 13:19:38,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:19:38,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025023534] [2020-07-07 13:19:38,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:19:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:19:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-07 13:19:39,263 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:19:39,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025023534] [2020-07-07 13:19:39,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:19:39,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:19:39,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909673749] [2020-07-07 13:19:39,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:19:39,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:19:39,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:19:39,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:19:39,266 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand 12 states. [2020-07-07 13:19:40,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:19:40,507 INFO L93 Difference]: Finished difference Result 316 states and 361 transitions. [2020-07-07 13:19:40,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-07 13:19:40,509 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-07-07 13:19:40,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:19:40,517 INFO L225 Difference]: With dead ends: 316 [2020-07-07 13:19:40,521 INFO L226 Difference]: Without dead ends: 187 [2020-07-07 13:19:40,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-07-07 13:19:40,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-07-07 13:19:40,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 177. [2020-07-07 13:19:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-07-07 13:19:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 201 transitions. [2020-07-07 13:19:40,600 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 201 transitions. Word has length 80 [2020-07-07 13:19:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:19:40,600 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 201 transitions. [2020-07-07 13:19:40,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:19:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 201 transitions. [2020-07-07 13:19:40,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-07 13:19:40,614 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:19:40,614 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:19:40,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:19:40,615 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:19:40,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:19:40,615 INFO L82 PathProgramCache]: Analyzing trace with hash 96122912, now seen corresponding path program 1 times [2020-07-07 13:19:40,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:19:40,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974944572] [2020-07-07 13:19:40,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:19:40,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:19:40,641 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 13:19:40,664 INFO L168 Benchmark]: Toolchain (without parser) took 5052.22 ms. Allocated memory was 139.5 MB in the beginning and 280.0 MB in the end (delta: 140.5 MB). Free memory was 104.1 MB in the beginning and 250.6 MB in the end (delta: -146.5 MB). Peak memory consumption was 114.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:19:40,666 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:19:40,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.69 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.9 MB in the beginning and 180.9 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:19:40,671 INFO L168 Benchmark]: Boogie Preprocessor took 55.85 ms. Allocated memory is still 203.9 MB. Free memory was 180.9 MB in the beginning and 178.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:19:40,677 INFO L168 Benchmark]: RCFGBuilder took 665.98 ms. Allocated memory is still 203.9 MB. Free memory was 178.3 MB in the beginning and 137.4 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:19:40,679 INFO L168 Benchmark]: TraceAbstraction took 3895.04 ms. Allocated memory was 203.9 MB in the beginning and 280.0 MB in the end (delta: 76.0 MB). Free memory was 136.7 MB in the beginning and 250.6 MB in the end (delta: -113.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:19:40,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 429.69 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.9 MB in the beginning and 180.9 MB in the end (delta: -77.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.85 ms. Allocated memory is still 203.9 MB. Free memory was 180.9 MB in the beginning and 178.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 665.98 ms. Allocated memory is still 203.9 MB. Free memory was 178.3 MB in the beginning and 137.4 MB in the end (delta: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3895.04 ms. Allocated memory was 203.9 MB in the beginning and 280.0 MB in the end (delta: 76.0 MB). Free memory was 136.7 MB in the beginning and 250.6 MB in the end (delta: -113.9 MB). Peak memory consumption was 82.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...