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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/heap-data/cart.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:57:18,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:57:18,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:57:18,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:57:18,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:57:18,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:57:18,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:57:18,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:57:18,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:57:18,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:57:18,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:57:18,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:57:18,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:57:18,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:57:18,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:57:18,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:57:18,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:57:18,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:57:18,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:57:18,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:57:18,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:57:18,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:57:18,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:57:18,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:57:18,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:57:18,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:57:18,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:57:18,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:57:18,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:57:18,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:57:18,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:57:18,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:57:18,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:57:18,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:57:18,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:57:18,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:57:18,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:57:18,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:57:18,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:57:18,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:57:18,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:57:18,541 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 [2019-10-13 21:57:18,562 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:57:18,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:57:18,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:57:18,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:57:18,565 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:57:18,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:57:18,565 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:57:18,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:57:18,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:57:18,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:57:18,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:57:18,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:57:18,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:57:18,568 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:57:18,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:57:18,568 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:57:18,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:57:18,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:57:18,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:57:18,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:57:18,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:57:18,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:57:18,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:57:18,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:57:18,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:57:18,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:57:18,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:57:18,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:57:18,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:57:18,844 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:57:18,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:57:18,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:57:18,862 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:57:18,863 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:57:18,864 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/cart.i [2019-10-13 21:57:18,925 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baaa28298/5e2a879fede247ff9d7369b845a50463/FLAGcadaf3829 [2019-10-13 21:57:19,520 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:57:19,521 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/cart.i [2019-10-13 21:57:19,534 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baaa28298/5e2a879fede247ff9d7369b845a50463/FLAGcadaf3829 [2019-10-13 21:57:19,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baaa28298/5e2a879fede247ff9d7369b845a50463 [2019-10-13 21:57:19,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:57:19,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:57:19,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:57:19,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:57:19,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:57:19,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:57:19" (1/1) ... [2019-10-13 21:57:19,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef0d72f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:19, skipping insertion in model container [2019-10-13 21:57:19,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:57:19" (1/1) ... [2019-10-13 21:57:19,843 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:57:19,885 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:57:20,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:57:20,347 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:57:20,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:57:20,457 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:57:20,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:20 WrapperNode [2019-10-13 21:57:20,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:57:20,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:57:20,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:57:20,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:57:20,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:20" (1/1) ... [2019-10-13 21:57:20,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:20" (1/1) ... [2019-10-13 21:57:20,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:20" (1/1) ... [2019-10-13 21:57:20,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:20" (1/1) ... [2019-10-13 21:57:20,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:20" (1/1) ... [2019-10-13 21:57:20,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:20" (1/1) ... [2019-10-13 21:57:20,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:20" (1/1) ... [2019-10-13 21:57:20,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:57:20,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:57:20,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:57:20,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:57:20,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:20" (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 [2019-10-13 21:57:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:57:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:57:20,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 21:57:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 21:57:20,589 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:57:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:57:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:57:20,589 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 21:57:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 21:57:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 21:57:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 21:57:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 21:57:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 21:57:20,590 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 21:57:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 21:57:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 21:57:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 21:57:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 21:57:20,591 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 21:57:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 21:57:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 21:57:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 21:57:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 21:57:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 21:57:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 21:57:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 21:57:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 21:57:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 21:57:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 21:57:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 21:57:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 21:57:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 21:57:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 21:57:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 21:57:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 21:57:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 21:57:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 21:57:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 21:57:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 21:57:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 21:57:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 21:57:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 21:57:20,595 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 21:57:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 21:57:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 21:57:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 21:57:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 21:57:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 21:57:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 21:57:20,596 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 21:57:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 21:57:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 21:57:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 21:57:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 21:57:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 21:57:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 21:57:20,597 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 21:57:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 21:57:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 21:57:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:57:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:57:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 21:57:20,598 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:57:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 21:57:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 21:57:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 21:57:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 21:57:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 21:57:20,599 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 21:57:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 21:57:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 21:57:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 21:57:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:57:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 21:57:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 21:57:20,600 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 21:57:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 21:57:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 21:57:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 21:57:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 21:57:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 21:57:20,601 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 21:57:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 21:57:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 21:57:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 21:57:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 21:57:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 21:57:20,602 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 21:57:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 21:57:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 21:57:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 21:57:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 21:57:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 21:57:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 21:57:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 21:57:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 21:57:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 21:57:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 21:57:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 21:57:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 21:57:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 21:57:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 21:57:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 21:57:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 21:57:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 21:57:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 21:57:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 21:57:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 21:57:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 21:57:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 21:57:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 21:57:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 21:57:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:57:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:57:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:57:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:57:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:57:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:57:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:57:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:57:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:57:21,195 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:57:21,196 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:57:21,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:57:21 BoogieIcfgContainer [2019-10-13 21:57:21,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:57:21,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:57:21,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:57:21,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:57:21,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:57:19" (1/3) ... [2019-10-13 21:57:21,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35108aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:57:21, skipping insertion in model container [2019-10-13 21:57:21,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:20" (2/3) ... [2019-10-13 21:57:21,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35108aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:57:21, skipping insertion in model container [2019-10-13 21:57:21,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:57:21" (3/3) ... [2019-10-13 21:57:21,207 INFO L109 eAbstractionObserver]: Analyzing ICFG cart.i [2019-10-13 21:57:21,217 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:57:21,227 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:57:21,239 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:57:21,273 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:57:21,274 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:57:21,274 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:57:21,275 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:57:21,275 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:57:21,275 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:57:21,275 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:57:21,284 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:57:21,302 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-13 21:57:21,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 21:57:21,309 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:57:21,310 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:57:21,312 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:57:21,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:57:21,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1622932023, now seen corresponding path program 1 times [2019-10-13 21:57:21,328 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:57:21,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851853548] [2019-10-13 21:57:21,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:21,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:21,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:57:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:57:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:57:21,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851853548] [2019-10-13 21:57:21,463 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:57:21,464 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:57:21,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221297036] [2019-10-13 21:57:21,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:57:21,470 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:57:21,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:57:21,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:57:21,491 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-10-13 21:57:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:57:21,523 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-10-13 21:57:21,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:57:21,524 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-10-13 21:57:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:57:21,541 INFO L225 Difference]: With dead ends: 35 [2019-10-13 21:57:21,541 INFO L226 Difference]: Without dead ends: 19 [2019-10-13 21:57:21,548 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:57:21,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-13 21:57:21,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-13 21:57:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 21:57:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-10-13 21:57:21,609 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2019-10-13 21:57:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:57:21,609 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-10-13 21:57:21,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:57:21,610 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-10-13 21:57:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 21:57:21,612 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:57:21,612 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:57:21,612 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:57:21,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:57:21,614 INFO L82 PathProgramCache]: Analyzing trace with hash 49503255, now seen corresponding path program 1 times [2019-10-13 21:57:21,614 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:57:21,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051000385] [2019-10-13 21:57:21,615 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:21,615 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:21,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:57:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:57:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:57:21,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051000385] [2019-10-13 21:57:21,797 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:57:21,797 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:57:21,798 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524121051] [2019-10-13 21:57:21,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:57:21,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:57:21,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:57:21,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:57:21,801 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 4 states. [2019-10-13 21:57:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:57:21,905 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2019-10-13 21:57:21,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:57:21,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-13 21:57:21,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:57:21,908 INFO L225 Difference]: With dead ends: 37 [2019-10-13 21:57:21,908 INFO L226 Difference]: Without dead ends: 23 [2019-10-13 21:57:21,909 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:57:21,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-13 21:57:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-13 21:57:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 21:57:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-10-13 21:57:21,915 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 15 [2019-10-13 21:57:21,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:57:21,916 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-10-13 21:57:21,916 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:57:21,916 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2019-10-13 21:57:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 21:57:21,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:57:21,917 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:57:21,917 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:57:21,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:57:21,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1773726691, now seen corresponding path program 1 times [2019-10-13 21:57:21,918 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:57:21,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682583402] [2019-10-13 21:57:21,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:21,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:21,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:57:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:57:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:57:21,995 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682583402] [2019-10-13 21:57:21,996 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:57:21,996 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:57:21,996 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701086998] [2019-10-13 21:57:21,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:57:21,997 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:57:21,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:57:21,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:57:21,997 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 4 states. [2019-10-13 21:57:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:57:22,046 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2019-10-13 21:57:22,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:57:22,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-10-13 21:57:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:57:22,048 INFO L225 Difference]: With dead ends: 37 [2019-10-13 21:57:22,048 INFO L226 Difference]: Without dead ends: 31 [2019-10-13 21:57:22,049 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:57:22,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-13 21:57:22,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-10-13 21:57:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 21:57:22,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-10-13 21:57:22,055 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 19 [2019-10-13 21:57:22,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:57:22,056 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-10-13 21:57:22,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:57:22,056 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-10-13 21:57:22,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 21:57:22,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:57:22,057 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:57:22,057 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:57:22,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:57:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1143672526, now seen corresponding path program 1 times [2019-10-13 21:57:22,058 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:57:22,058 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533858871] [2019-10-13 21:57:22,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:22,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:22,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:57:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:57:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:57:22,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533858871] [2019-10-13 21:57:22,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468503561] [2019-10-13 21:57:22,388 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 [2019-10-13 21:57:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:57:22,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjunts are in the unsatisfiable core [2019-10-13 21:57:22,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:57:22,815 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:57:22,817 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:57:22,827 INFO L168 Benchmark]: Toolchain (without parser) took 2995.48 ms. Allocated memory was 146.8 MB in the beginning and 233.3 MB in the end (delta: 86.5 MB). Free memory was 102.0 MB in the beginning and 130.9 MB in the end (delta: -28.9 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:57:22,829 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-13 21:57:22,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.03 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.5 MB in the beginning and 171.2 MB in the end (delta: -69.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:57:22,833 INFO L168 Benchmark]: Boogie Preprocessor took 70.05 ms. Allocated memory is still 204.5 MB. Free memory was 171.2 MB in the beginning and 168.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:57:22,834 INFO L168 Benchmark]: RCFGBuilder took 668.30 ms. Allocated memory is still 204.5 MB. Free memory was 168.6 MB in the beginning and 124.0 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:57:22,840 INFO L168 Benchmark]: TraceAbstraction took 1621.77 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 124.0 MB in the beginning and 130.9 MB in the end (delta: -6.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:57:22,852 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 631.03 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.5 MB in the beginning and 171.2 MB in the end (delta: -69.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.05 ms. Allocated memory is still 204.5 MB. Free memory was 171.2 MB in the beginning and 168.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 668.30 ms. Allocated memory is still 204.5 MB. Free memory was 168.6 MB in the beginning and 124.0 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1621.77 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 124.0 MB in the beginning and 130.9 MB in the end (delta: -6.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.NullPointerException de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.NullPointerException: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...