/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:31:01,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:31:01,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:31:01,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:31:01,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:31:01,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:31:01,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:31:01,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:31:01,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:31:01,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:31:01,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:31:01,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:31:01,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:31:01,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:31:01,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:31:01,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:31:01,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:31:01,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:31:01,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:31:01,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:31:01,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:31:01,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:31:01,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:31:01,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:31:01,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:31:01,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:31:01,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:31:01,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:31:01,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:31:01,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:31:01,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:31:01,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:31:01,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:31:01,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:31:01,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:31:01,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:31:01,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:31:01,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:31:01,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:31:01,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:31:01,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:31:01,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:31:01,330 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:31:01,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:31:01,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:31:01,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:31:01,332 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:31:01,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:31:01,332 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:31:01,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:31:01,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:31:01,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:31:01,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:31:01,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:31:01,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:31:01,334 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:31:01,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:31:01,334 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:31:01,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:31:01,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:31:01,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:31:01,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:31:01,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:31:01,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:31:01,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:31:01,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:31:01,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:31:01,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:31:01,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:31:01,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:31:01,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:31:01,613 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:31:01,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:31:01,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:31:01,636 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:31:01,636 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:31:01,637 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2019-11-07 00:31:01,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa21e4b02/5813be1bd5794b3d9546255b2783c25a/FLAGb176c0509 [2019-11-07 00:31:02,256 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:31:02,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2019-11-07 00:31:02,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa21e4b02/5813be1bd5794b3d9546255b2783c25a/FLAGb176c0509 [2019-11-07 00:31:02,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa21e4b02/5813be1bd5794b3d9546255b2783c25a [2019-11-07 00:31:02,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:31:02,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:31:02,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:31:02,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:31:02,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:31:02,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:02" (1/1) ... [2019-11-07 00:31:02,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b39e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:02, skipping insertion in model container [2019-11-07 00:31:02,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:02" (1/1) ... [2019-11-07 00:31:02,579 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:31:02,632 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:31:03,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:31:03,056 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:31:03,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:31:03,165 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:31:03,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:03 WrapperNode [2019-11-07 00:31:03,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:31:03,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:31:03,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:31:03,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:31:03,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:03" (1/1) ... [2019-11-07 00:31:03,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:03" (1/1) ... [2019-11-07 00:31:03,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:03" (1/1) ... [2019-11-07 00:31:03,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:03" (1/1) ... [2019-11-07 00:31:03,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:03" (1/1) ... [2019-11-07 00:31:03,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:03" (1/1) ... [2019-11-07 00:31:03,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:03" (1/1) ... [2019-11-07 00:31:03,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:31:03,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:31:03,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:31:03,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:31:03,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:03" (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 [2019-11-07 00:31:03,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:31:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:31:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 00:31:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 00:31:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 00:31:03,307 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-07 00:31:03,308 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2019-11-07 00:31:03,308 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-07 00:31:03,308 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2019-11-07 00:31:03,308 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2019-11-07 00:31:03,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:31:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:31:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:31:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 00:31:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 00:31:03,309 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 00:31:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 00:31:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 00:31:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 00:31:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 00:31:03,312 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 00:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 00:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 00:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 00:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 00:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 00:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 00:31:03,313 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 00:31:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 00:31:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 00:31:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 00:31:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 00:31:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 00:31:03,314 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 00:31:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 00:31:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 00:31:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 00:31:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 00:31:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 00:31:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 00:31:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 00:31:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 00:31:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 00:31:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 00:31:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 00:31:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 00:31:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 00:31:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 00:31:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 00:31:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 00:31:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 00:31:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 00:31:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 00:31:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 00:31:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 00:31:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 00:31:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 00:31:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 00:31:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 00:31:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 00:31:03,322 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 00:31:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 00:31:03,323 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 00:31:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 00:31:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 00:31:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:31:03,324 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:31:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 00:31:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:31:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 00:31:03,325 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 00:31:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 00:31:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 00:31:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 00:31:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 00:31:03,326 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 00:31:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 00:31:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 00:31:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:31:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 00:31:03,327 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 00:31:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 00:31:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 00:31:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 00:31:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 00:31:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 00:31:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 00:31:03,328 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 00:31:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 00:31:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 00:31:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 00:31:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 00:31:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 00:31:03,329 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 00:31:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 00:31:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 00:31:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 00:31:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 00:31:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 00:31:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 00:31:03,330 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 00:31:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 00:31:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 00:31:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 00:31:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 00:31:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 00:31:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 00:31:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 00:31:03,331 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 00:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 00:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 00:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 00:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 00:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 00:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 00:31:03,332 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 00:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 00:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 00:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 00:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-07 00:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:31:03,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2019-11-07 00:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-07 00:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2019-11-07 00:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2019-11-07 00:31:03,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:31:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:31:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 00:31:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:31:03,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:31:03,675 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 00:31:03,920 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:31:03,921 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-07 00:31:03,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:03 BoogieIcfgContainer [2019-11-07 00:31:03,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:31:03,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:31:03,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:31:03,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:31:03,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:31:02" (1/3) ... [2019-11-07 00:31:03,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa04e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:03, skipping insertion in model container [2019-11-07 00:31:03,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:03" (2/3) ... [2019-11-07 00:31:03,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa04e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:03, skipping insertion in model container [2019-11-07 00:31:03,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:03" (3/3) ... [2019-11-07 00:31:03,931 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-2.i [2019-11-07 00:31:03,942 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:31:03,950 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:31:03,962 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:31:03,996 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:31:03,996 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:31:03,997 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:31:03,997 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:31:03,997 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:31:03,997 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:31:03,997 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:31:03,997 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:31:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2019-11-07 00:31:04,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-07 00:31:04,032 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:04,033 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 00:31:04,037 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:04,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:04,045 INFO L82 PathProgramCache]: Analyzing trace with hash -87837704, now seen corresponding path program 1 times [2019-11-07 00:31:04,056 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:04,056 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42156331] [2019-11-07 00:31:04,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 00:31:04,261 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42156331] [2019-11-07 00:31:04,262 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819630368] [2019-11-07 00:31:04,263 INFO L94 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 [2019-11-07 00:31:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:04,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-07 00:31:04,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:31:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:31:04,432 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:31:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 00:31:04,475 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:31:04,475 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-11-07 00:31:04,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137136551] [2019-11-07 00:31:04,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:31:04,485 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:04,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:31:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:31:04,504 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2019-11-07 00:31:04,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:04,545 INFO L93 Difference]: Finished difference Result 124 states and 166 transitions. [2019-11-07 00:31:04,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:31:04,547 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2019-11-07 00:31:04,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:04,568 INFO L225 Difference]: With dead ends: 124 [2019-11-07 00:31:04,569 INFO L226 Difference]: Without dead ends: 51 [2019-11-07 00:31:04,574 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:31:04,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-07 00:31:04,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-11-07 00:31:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-07 00:31:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2019-11-07 00:31:04,627 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 37 [2019-11-07 00:31:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:04,627 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2019-11-07 00:31:04,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:31:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2019-11-07 00:31:04,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-07 00:31:04,630 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:04,630 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:04,835 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:04,835 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:04,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:04,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1536900415, now seen corresponding path program 1 times [2019-11-07 00:31:04,836 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:04,836 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312262946] [2019-11-07 00:31:04,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:05,062 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312262946] [2019-11-07 00:31:05,063 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118939972] [2019-11-07 00:31:05,063 INFO L94 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 [2019-11-07 00:31:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:05,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:31:05,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:31:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:31:05,235 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:31:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:05,475 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:31:05,475 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 15 [2019-11-07 00:31:05,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319279287] [2019-11-07 00:31:05,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:31:05,477 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:05,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:31:05,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:31:05,479 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 9 states. [2019-11-07 00:31:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:05,635 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2019-11-07 00:31:05,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:31:05,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2019-11-07 00:31:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:05,637 INFO L225 Difference]: With dead ends: 91 [2019-11-07 00:31:05,637 INFO L226 Difference]: Without dead ends: 53 [2019-11-07 00:31:05,640 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:31:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-07 00:31:05,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-07 00:31:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-07 00:31:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2019-11-07 00:31:05,662 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 42 [2019-11-07 00:31:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:05,664 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2019-11-07 00:31:05,664 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:31:05,664 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2019-11-07 00:31:05,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-07 00:31:05,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:05,669 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:05,881 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:05,882 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:05,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:05,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1663200358, now seen corresponding path program 1 times [2019-11-07 00:31:05,882 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:05,883 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289985992] [2019-11-07 00:31:05,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 00:31:06,058 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289985992] [2019-11-07 00:31:06,058 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:31:06,058 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:31:06,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765099758] [2019-11-07 00:31:06,059 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:31:06,059 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:06,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:31:06,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:31:06,060 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 10 states. [2019-11-07 00:31:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:31:06,237 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2019-11-07 00:31:06,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:31:06,238 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2019-11-07 00:31:06,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:31:06,241 INFO L225 Difference]: With dead ends: 73 [2019-11-07 00:31:06,242 INFO L226 Difference]: Without dead ends: 69 [2019-11-07 00:31:06,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:31:06,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-07 00:31:06,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2019-11-07 00:31:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-07 00:31:06,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2019-11-07 00:31:06,264 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 46 [2019-11-07 00:31:06,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:31:06,266 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2019-11-07 00:31:06,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:31:06,266 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2019-11-07 00:31:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-07 00:31:06,270 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:31:06,270 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:31:06,271 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:31:06,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:06,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1968577046, now seen corresponding path program 1 times [2019-11-07 00:31:06,272 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:31:06,272 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672827912] [2019-11-07 00:31:06,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:31:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 00:31:06,665 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672827912] [2019-11-07 00:31:06,665 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671478857] [2019-11-07 00:31:06,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:31:06,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-07 00:31:06,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:31:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-07 00:31:06,850 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:31:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 00:31:07,118 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [296357035] [2019-11-07 00:31:07,124 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 48 [2019-11-07 00:31:07,163 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:31:07,163 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:31:07,246 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 00:31:07,248 INFO L272 AbstractInterpreter]: Visited 14 different actions 14 times. Never merged. Never widened. Performed 38 root evaluator evaluations with a maximum evaluation depth of 3. Performed 38 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 26 variables. [2019-11-07 00:31:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:31:07,252 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 00:31:07,295 INFO L227 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 89.35% of their original sizes. [2019-11-07 00:31:07,296 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 00:31:07,311 INFO L553 sIntCurrentIteration]: We unified 46 AI predicates to 46 [2019-11-07 00:31:07,311 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 00:31:07,312 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:31:07,312 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15, 10, 10] total 25 [2019-11-07 00:31:07,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987916016] [2019-11-07 00:31:07,313 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:31:07,313 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:31:07,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:31:07,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:31:07,314 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 7 states. [2019-11-07 00:31:07,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:31:07,518 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:31:07,519 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 1195#true or 1570#(= |main_#t~ret14| 2) ([#1{main_#t~ret14 = [2;2]; }]) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:403) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1089) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:969) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) 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:316) 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) [2019-11-07 00:31:07,527 INFO L168 Benchmark]: Toolchain (without parser) took 4965.99 ms. Allocated memory was 107.5 MB in the beginning and 212.9 MB in the end (delta: 105.4 MB). Free memory was 73.1 MB in the beginning and 108.4 MB in the end (delta: -35.3 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:07,528 INFO L168 Benchmark]: CDTParser took 1.11 ms. Allocated memory is still 107.5 MB. Free memory was 92.1 MB in the beginning and 92.0 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2019-11-07 00:31:07,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.38 ms. Allocated memory was 107.5 MB in the beginning and 166.2 MB in the end (delta: 58.7 MB). Free memory was 72.8 MB in the beginning and 138.4 MB in the end (delta: -65.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:07,530 INFO L168 Benchmark]: Boogie Preprocessor took 69.50 ms. Allocated memory is still 166.2 MB. Free memory was 138.4 MB in the beginning and 135.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:07,530 INFO L168 Benchmark]: RCFGBuilder took 684.69 ms. Allocated memory was 166.2 MB in the beginning and 185.6 MB in the end (delta: 19.4 MB). Free memory was 134.9 MB in the beginning and 161.1 MB in the end (delta: -26.2 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:07,531 INFO L168 Benchmark]: TraceAbstraction took 3601.07 ms. Allocated memory was 185.6 MB in the beginning and 212.9 MB in the end (delta: 27.3 MB). Free memory was 160.3 MB in the beginning and 108.4 MB in the end (delta: 51.9 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:31:07,542 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11 ms. Allocated memory is still 107.5 MB. Free memory was 92.1 MB in the beginning and 92.0 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 606.38 ms. Allocated memory was 107.5 MB in the beginning and 166.2 MB in the end (delta: 58.7 MB). Free memory was 72.8 MB in the beginning and 138.4 MB in the end (delta: -65.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.50 ms. Allocated memory is still 166.2 MB. Free memory was 138.4 MB in the beginning and 135.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 684.69 ms. Allocated memory was 166.2 MB in the beginning and 185.6 MB in the end (delta: 19.4 MB). Free memory was 134.9 MB in the beginning and 161.1 MB in the end (delta: -26.2 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3601.07 ms. Allocated memory was 185.6 MB in the beginning and 212.9 MB in the end (delta: 27.3 MB). Free memory was 160.3 MB in the beginning and 108.4 MB in the end (delta: 51.9 MB). Peak memory consumption was 79.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 1195#true or 1570#(= |main_#t~ret14| 2) ([#1{main_#t~ret14 = [2;2]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 1195#true or 1570#(= |main_#t~ret14| 2) ([#1{main_#t~ret14 = [2;2]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...