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-manipulation/tree-4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:00:07,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:00:07,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:00:07,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:00:07,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:00:07,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:00:07,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:00:07,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:00:07,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:00:07,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:00:07,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:00:07,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:00:07,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:00:07,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:00:07,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:00:07,396 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:00:07,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:00:07,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:00:07,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:00:07,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:00:07,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:00:07,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:00:07,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:00:07,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:00:07,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:00:07,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:00:07,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:00:07,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:00:07,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:00:07,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:00:07,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:00:07,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:00:07,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:00:07,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:00:07,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:00:07,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:00:07,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:00:07,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:00:07,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:00:07,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:00:07,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:00:07,432 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 [2019-10-15 02:00:07,460 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:00:07,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:00:07,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:00:07,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:00:07,467 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:00:07,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:00:07,468 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:00:07,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:00:07,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:00:07,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:00:07,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:00:07,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:00:07,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:00:07,469 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:00:07,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:00:07,470 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:00:07,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:00:07,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:00:07,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:00:07,471 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:00:07,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:00:07,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:00:07,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:00:07,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:00:07,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:00:07,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:00:07,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:00:07,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:00:07,473 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 [2019-10-15 02:00:07,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:00:07,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:00:07,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:00:07,785 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:00:07,786 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:00:07,786 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/tree-4.i [2019-10-15 02:00:07,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae6bac19c/96c83594ecbc40e2b23fc94401cfe7e1/FLAG4d5a1f3cc [2019-10-15 02:00:08,365 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:00:08,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/tree-4.i [2019-10-15 02:00:08,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae6bac19c/96c83594ecbc40e2b23fc94401cfe7e1/FLAG4d5a1f3cc [2019-10-15 02:00:08,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae6bac19c/96c83594ecbc40e2b23fc94401cfe7e1 [2019-10-15 02:00:08,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:00:08,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:00:08,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:00:08,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:00:08,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:00:08,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:00:08" (1/1) ... [2019-10-15 02:00:08,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cde81e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:08, skipping insertion in model container [2019-10-15 02:00:08,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:00:08" (1/1) ... [2019-10-15 02:00:08,760 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:00:08,824 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:00:09,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:00:09,283 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:00:09,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:00:09,404 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:00:09,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:09 WrapperNode [2019-10-15 02:00:09,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:00:09,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:00:09,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:00:09,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:00:09,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:09" (1/1) ... [2019-10-15 02:00:09,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:09" (1/1) ... [2019-10-15 02:00:09,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:09" (1/1) ... [2019-10-15 02:00:09,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:09" (1/1) ... [2019-10-15 02:00:09,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:09" (1/1) ... [2019-10-15 02:00:09,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:09" (1/1) ... [2019-10-15 02:00:09,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:09" (1/1) ... [2019-10-15 02:00:09,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:00:09,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:00:09,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:00:09,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:00:09,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:09" (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 [2019-10-15 02:00:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:00:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:00:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 02:00:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 02:00:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2019-10-15 02:00:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2019-10-15 02:00:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure create_tree [2019-10-15 02:00:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tree [2019-10-15 02:00:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:00:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:00:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 02:00:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 02:00:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 02:00:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 02:00:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 02:00:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 02:00:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 02:00:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 02:00:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 02:00:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 02:00:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 02:00:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 02:00:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 02:00:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 02:00:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 02:00:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 02:00:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 02:00:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 02:00:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 02:00:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 02:00:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 02:00:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 02:00:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 02:00:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 02:00:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 02:00:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 02:00:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 02:00:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 02:00:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 02:00:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 02:00:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 02:00:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 02:00:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 02:00:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 02:00:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 02:00:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 02:00:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 02:00:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 02:00:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 02:00:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 02:00:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 02:00:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 02:00:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 02:00:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 02:00:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 02:00:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 02:00:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 02:00:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 02:00:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 02:00:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 02:00:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 02:00:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 02:00:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:00:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:00:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 02:00:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:00:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 02:00:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 02:00:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 02:00:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 02:00:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 02:00:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 02:00:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 02:00:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 02:00:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 02:00:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 02:00:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 02:00:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 02:00:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 02:00:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 02:00:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 02:00:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 02:00:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 02:00:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 02:00:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 02:00:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 02:00:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 02:00:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 02:00:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 02:00:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 02:00:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 02:00:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 02:00:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 02:00:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 02:00:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 02:00:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 02:00:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 02:00:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 02:00:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 02:00:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 02:00:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 02:00:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 02:00:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 02:00:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 02:00:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 02:00:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 02:00:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 02:00:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 02:00:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 02:00:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 02:00:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 02:00:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 02:00:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:00:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2019-10-15 02:00:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2019-10-15 02:00:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:00:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:00:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure create_tree [2019-10-15 02:00:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:00:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:00:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:00:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure free_tree [2019-10-15 02:00:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:00:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:00:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:00:09,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:00:10,571 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:00:10,572 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-15 02:00:10,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:00:10 BoogieIcfgContainer [2019-10-15 02:00:10,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:00:10,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:00:10,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:00:10,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:00:10,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:00:08" (1/3) ... [2019-10-15 02:00:10,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242dd2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:00:10, skipping insertion in model container [2019-10-15 02:00:10,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:00:09" (2/3) ... [2019-10-15 02:00:10,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242dd2e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:00:10, skipping insertion in model container [2019-10-15 02:00:10,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:00:10" (3/3) ... [2019-10-15 02:00:10,583 INFO L109 eAbstractionObserver]: Analyzing ICFG tree-4.i [2019-10-15 02:00:10,594 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:00:10,603 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:00:10,615 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:00:10,641 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:00:10,641 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:00:10,641 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:00:10,641 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:00:10,642 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:00:10,642 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:00:10,642 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:00:10,642 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:00:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2019-10-15 02:00:10,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-15 02:00:10,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:00:10,669 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:00:10,672 INFO L410 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:00:10,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:00:10,679 INFO L82 PathProgramCache]: Analyzing trace with hash 833824495, now seen corresponding path program 1 times [2019-10-15 02:00:10,688 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:00:10,688 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793197963] [2019-10-15 02:00:10,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:10,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:10,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:00:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:10,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793197963] [2019-10-15 02:00:10,828 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:00:10,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 02:00:10,829 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102272834] [2019-10-15 02:00:10,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 02:00:10,834 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:00:10,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 02:00:10,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 02:00:10,850 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2019-10-15 02:00:10,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:00:10,876 INFO L93 Difference]: Finished difference Result 79 states and 118 transitions. [2019-10-15 02:00:10,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 02:00:10,878 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-15 02:00:10,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:00:10,888 INFO L225 Difference]: With dead ends: 79 [2019-10-15 02:00:10,888 INFO L226 Difference]: Without dead ends: 31 [2019-10-15 02:00:10,892 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 [2019-10-15 02:00:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-15 02:00:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-15 02:00:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-15 02:00:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-10-15 02:00:10,936 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 17 [2019-10-15 02:00:10,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:00:10,936 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-10-15 02:00:10,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 02:00:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-10-15 02:00:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 02:00:10,938 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:00:10,938 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:00:10,939 INFO L410 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:00:10,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:00:10,941 INFO L82 PathProgramCache]: Analyzing trace with hash -174511117, now seen corresponding path program 1 times [2019-10-15 02:00:10,941 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:00:10,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275561015] [2019-10-15 02:00:10,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:10,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:10,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:00:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:11,124 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275561015] [2019-10-15 02:00:11,124 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:00:11,124 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 02:00:11,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797704918] [2019-10-15 02:00:11,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 02:00:11,126 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:00:11,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 02:00:11,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:00:11,128 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2019-10-15 02:00:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:00:11,274 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2019-10-15 02:00:11,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 02:00:11,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-10-15 02:00:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:00:11,276 INFO L225 Difference]: With dead ends: 56 [2019-10-15 02:00:11,276 INFO L226 Difference]: Without dead ends: 33 [2019-10-15 02:00:11,278 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 02:00:11,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-15 02:00:11,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-10-15 02:00:11,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-15 02:00:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2019-10-15 02:00:11,285 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 18 [2019-10-15 02:00:11,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:00:11,285 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2019-10-15 02:00:11,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 02:00:11,286 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2019-10-15 02:00:11,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-15 02:00:11,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:00:11,287 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:00:11,287 INFO L410 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:00:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:00:11,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1037557495, now seen corresponding path program 1 times [2019-10-15 02:00:11,288 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:00:11,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122560861] [2019-10-15 02:00:11,288 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:11,288 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:11,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:00:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:11,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122560861] [2019-10-15 02:00:11,414 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:00:11,414 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:00:11,415 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355824128] [2019-10-15 02:00:11,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:00:11,415 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:00:11,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:00:11,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:00:11,416 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 3 states. [2019-10-15 02:00:11,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:00:11,463 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2019-10-15 02:00:11,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:00:11,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-15 02:00:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:00:11,466 INFO L225 Difference]: With dead ends: 55 [2019-10-15 02:00:11,466 INFO L226 Difference]: Without dead ends: 34 [2019-10-15 02:00:11,467 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:00:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-15 02:00:11,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-15 02:00:11,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-15 02:00:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-15 02:00:11,477 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 20 [2019-10-15 02:00:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:00:11,478 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-15 02:00:11,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:00:11,478 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-15 02:00:11,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-15 02:00:11,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:00:11,480 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:00:11,481 INFO L410 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:00:11,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:00:11,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1990611584, now seen corresponding path program 1 times [2019-10-15 02:00:11,487 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:00:11,487 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545828965] [2019-10-15 02:00:11,487 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:11,487 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:11,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:00:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:11,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545828965] [2019-10-15 02:00:11,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231799692] [2019-10-15 02:00:11,630 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 [2019-10-15 02:00:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:11,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-15 02:00:11,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:00:11,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:00:11,789 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:00:11,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 02:00:11,859 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 02:00:11,859 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [9] total 9 [2019-10-15 02:00:11,859 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586054831] [2019-10-15 02:00:11,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 02:00:11,860 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:00:11,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 02:00:11,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-15 02:00:11,861 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 8 states. [2019-10-15 02:00:11,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:00:11,999 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-10-15 02:00:11,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 02:00:12,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-10-15 02:00:12,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:00:12,001 INFO L225 Difference]: With dead ends: 47 [2019-10-15 02:00:12,001 INFO L226 Difference]: Without dead ends: 44 [2019-10-15 02:00:12,002 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-15 02:00:12,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-15 02:00:12,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2019-10-15 02:00:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-15 02:00:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-10-15 02:00:12,019 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2019-10-15 02:00:12,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:00:12,019 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-10-15 02:00:12,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 02:00:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-10-15 02:00:12,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-15 02:00:12,021 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:00:12,021 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 02:00:12,222 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:00:12,222 INFO L410 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:00:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:00:12,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1856453461, now seen corresponding path program 1 times [2019-10-15 02:00:12,223 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:00:12,223 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118799731] [2019-10-15 02:00:12,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:12,224 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:12,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:00:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:12,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118799731] [2019-10-15 02:00:12,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098590730] [2019-10-15 02:00:12,638 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 [2019-10-15 02:00:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:12,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 45 conjunts are in the unsatisfiable core [2019-10-15 02:00:12,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:00:12,803 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-15 02:00:12,804 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:00:12,816 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:12,816 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:00:12,817 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-10-15 02:00:12,950 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:12,951 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-15 02:00:12,952 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:00:13,171 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2019-10-15 02:00:13,172 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:13,192 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_77|], 6=[|v_#memory_$Pointer$.base_83|, |v_#memory_$Pointer$.offset_83|], 13=[|v_#memory_$Pointer$.base_84|, |v_#memory_$Pointer$.offset_84|]} [2019-10-15 02:00:13,219 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 02:00:13,229 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:00:13,231 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 935 treesize of output 301 [2019-10-15 02:00:13,231 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 02:00:13,371 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-10-15 02:00:13,371 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:13,381 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 02:00:13,524 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-10-15 02:00:13,525 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:13,534 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 02:00:13,640 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-10-15 02:00:13,640 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:13,643 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:00:13,870 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-10-15 02:00:13,870 INFO L341 Elim1Store]: treesize reduction 939, result has 56.4 percent of original size [2019-10-15 02:00:13,871 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 587 treesize of output 1687 [2019-10-15 02:00:13,873 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-15 02:00:14,096 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-10-15 02:00:14,097 INFO L567 ElimStorePlain]: treesize reduction 1101, result has 34.9 percent of original size [2019-10-15 02:00:14,100 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 02:00:14,115 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 64 [2019-10-15 02:00:14,115 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-15 02:00:14,149 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:14,151 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:00:14,152 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 7 variables, input treesize:3062, output treesize:93 [2019-10-15 02:00:14,482 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_int|], 6=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|]} [2019-10-15 02:00:14,487 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 02:00:14,488 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2019-10-15 02:00:14,488 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 02:00:14,506 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:14,533 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:14,533 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 74 [2019-10-15 02:00:14,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:00:14,536 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:00:14,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:00:14,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:00:14,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:00:14,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:00:14,545 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 02:00:14,581 INFO L567 ElimStorePlain]: treesize reduction 36, result has 50.0 percent of original size [2019-10-15 02:00:14,585 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2019-10-15 02:00:14,586 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 02:00:14,590 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:14,591 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 02:00:14,591 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:110, output treesize:3 [2019-10-15 02:00:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:14,599 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:00:15,258 WARN L191 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2019-10-15 02:00:15,521 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-10-15 02:00:16,132 WARN L191 SmtUtils]: Spent 609.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-10-15 02:00:16,693 WARN L191 SmtUtils]: Spent 560.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2019-10-15 02:00:16,803 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_int_77|], 2=[|v_#memory_int_87|], 7=[|v_#memory_$Pointer$.base_83|, |v_#memory_$Pointer$.offset_83|], 13=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|]} [2019-10-15 02:00:16,968 INFO L341 Elim1Store]: treesize reduction 628, result has 49.5 percent of original size [2019-10-15 02:00:16,969 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 936 treesize of output 616 [2019-10-15 02:00:16,970 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-15 02:00:17,233 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2019-10-15 02:00:17,234 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:17,294 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:17,295 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 678 treesize of output 685 [2019-10-15 02:00:17,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:00:17,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:00:17,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 02:00:17,300 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-10-15 02:00:17,503 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2019-10-15 02:00:17,503 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 02:00:17,705 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:00:17,706 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.UnsupportedOperationException: expected NNF 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.UnsupportedOperationException: expected NNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:236) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$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$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:74) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:275) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$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.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) 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 [2019-10-15 02:00:17,714 INFO L168 Benchmark]: Toolchain (without parser) took 8971.91 ms. Allocated memory was 139.5 MB in the beginning and 272.6 MB in the end (delta: 133.2 MB). Free memory was 101.8 MB in the beginning and 211.9 MB in the end (delta: -110.1 MB). Peak memory consumption was 114.6 MB. Max. memory is 7.1 GB. [2019-10-15 02:00:17,716 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 02:00:17,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 663.24 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 101.6 MB in the beginning and 169.9 MB in the end (delta: -68.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-10-15 02:00:17,718 INFO L168 Benchmark]: Boogie Preprocessor took 64.83 ms. Allocated memory is still 204.5 MB. Free memory was 169.9 MB in the beginning and 166.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-10-15 02:00:17,720 INFO L168 Benchmark]: RCFGBuilder took 1102.98 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 166.6 MB in the beginning and 208.3 MB in the end (delta: -41.7 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. [2019-10-15 02:00:17,721 INFO L168 Benchmark]: TraceAbstraction took 7136.15 ms. Allocated memory was 236.5 MB in the beginning and 272.6 MB in the end (delta: 36.2 MB). Free memory was 208.3 MB in the beginning and 211.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 124.2 MB. Max. memory is 7.1 GB. [2019-10-15 02:00:17,729 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 663.24 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 101.6 MB in the beginning and 169.9 MB in the end (delta: -68.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.83 ms. Allocated memory is still 204.5 MB. Free memory was 169.9 MB in the beginning and 166.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1102.98 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 166.6 MB in the beginning and 208.3 MB in the end (delta: -41.7 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7136.15 ms. Allocated memory was 236.5 MB in the beginning and 272.6 MB in the end (delta: 36.2 MB). Free memory was 208.3 MB in the beginning and 211.9 MB in the end (delta: -3.5 MB). Peak memory consumption was 124.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.UnsupportedOperationException: expected NNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.UnsupportedOperationException: expected NNF: 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...