/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:38:52,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:38:52,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:38:52,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:38:52,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:38:52,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:38:52,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:38:52,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:38:52,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:38:52,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:38:52,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:38:52,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:38:52,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:38:52,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:38:52,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:38:52,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:38:52,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:38:52,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:38:52,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:38:52,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:38:52,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:38:52,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:38:52,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:38:52,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:38:52,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 03:38:52,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 03:38:52,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 03:38:52,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 03:38:52,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 03:38:52,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 03:38:52,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 03:38:52,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 03:38:52,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 03:38:52,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 03:38:52,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 03:38:52,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 03:38:52,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 03:38:52,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 03:38:52,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:38:52,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:38:52,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:38:52,415 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 [2020-07-20 03:38:52,431 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:38:52,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:38:52,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:38:52,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:38:52,433 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:38:52,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:38:52,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:38:52,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:38:52,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:38:52,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:38:52,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:38:52,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:38:52,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:38:52,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:38:52,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:38:52,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:38:52,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:38:52,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:38:52,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:38:52,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:38:52,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:38:52,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:38:52,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:38:52,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:38:52,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:38:52,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:38:52,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:38:52,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:38:52,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:38:52,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:38:52,718 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:38:52,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:38:52,733 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:38:52,735 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:38:52,735 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:38:52,736 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-07-20 03:38:52,817 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9f180933/8d374411e93f40abbff84a4a799f688c/FLAGbfa17f950 [2020-07-20 03:38:53,375 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:38:53,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-07-20 03:38:53,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9f180933/8d374411e93f40abbff84a4a799f688c/FLAGbfa17f950 [2020-07-20 03:38:53,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9f180933/8d374411e93f40abbff84a4a799f688c [2020-07-20 03:38:53,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:38:53,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:38:53,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:38:53,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:38:53,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:38:53,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:38:53" (1/1) ... [2020-07-20 03:38:53,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552faa18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:53, skipping insertion in model container [2020-07-20 03:38:53,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:38:53" (1/1) ... [2020-07-20 03:38:53,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:38:53,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:38:54,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:38:54,243 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:38:54,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:38:54,360 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:38:54,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:54 WrapperNode [2020-07-20 03:38:54,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:38:54,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:38:54,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:38:54,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:38:54,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:54" (1/1) ... [2020-07-20 03:38:54,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:54" (1/1) ... [2020-07-20 03:38:54,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:54" (1/1) ... [2020-07-20 03:38:54,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:54" (1/1) ... [2020-07-20 03:38:54,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:54" (1/1) ... [2020-07-20 03:38:54,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:54" (1/1) ... [2020-07-20 03:38:54,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:54" (1/1) ... [2020-07-20 03:38:54,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:38:54,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:38:54,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:38:54,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:38:54,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:38:54,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:38:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:38:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:38:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 03:38:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 03:38:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 03:38:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 03:38:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 03:38:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 03:38:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 03:38:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 03:38:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 03:38:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 03:38:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 03:38:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 03:38:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 03:38:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 03:38:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 03:38:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 03:38:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 03:38:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 03:38:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 03:38:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 03:38:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 03:38:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 03:38:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 03:38:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 03:38:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 03:38:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 03:38:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 03:38:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 03:38:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 03:38:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 03:38:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 03:38:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 03:38:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 03:38:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 03:38:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 03:38:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 03:38:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 03:38:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 03:38:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 03:38:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 03:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 03:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 03:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 03:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 03:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 03:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 03:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 03:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 03:38:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 03:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 03:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 03:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 03:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 03:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 03:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 03:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 03:38:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 03:38:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 03:38:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 03:38:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 03:38:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 03:38:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 03:38:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 03:38:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 03:38:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 03:38:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 03:38:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 03:38:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 03:38:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 03:38:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 03:38:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 03:38:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 03:38:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 03:38:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 03:38:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 03:38:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 03:38:54,525 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 03:38:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 03:38:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 03:38:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 03:38:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 03:38:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 03:38:54,526 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 03:38:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 03:38:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 03:38:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 03:38:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 03:38:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 03:38:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 03:38:54,527 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 03:38:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 03:38:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 03:38:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 03:38:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 03:38:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 03:38:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 03:38:54,528 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 03:38:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 03:38:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 03:38:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 03:38:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 03:38:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 03:38:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 03:38:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:38:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:38:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:38:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 03:38:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 03:38:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:38:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 03:38:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:38:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:38:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:38:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:38:55,137 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:38:55,138 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-20 03:38:55,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:38:55 BoogieIcfgContainer [2020-07-20 03:38:55,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:38:55,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:38:55,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:38:55,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:38:55,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:38:53" (1/3) ... [2020-07-20 03:38:55,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69be25ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:38:55, skipping insertion in model container [2020-07-20 03:38:55,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:38:54" (2/3) ... [2020-07-20 03:38:55,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69be25ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:38:55, skipping insertion in model container [2020-07-20 03:38:55,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:38:55" (3/3) ... [2020-07-20 03:38:55,151 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-07-20 03:38:55,162 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:38:55,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-20 03:38:55,186 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-20 03:38:55,210 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:38:55,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:38:55,210 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:38:55,210 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:38:55,211 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:38:55,211 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:38:55,211 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:38:55,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:38:55,229 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-20 03:38:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 03:38:55,236 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:55,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:55,238 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:55,246 INFO L82 PathProgramCache]: Analyzing trace with hash -810798801, now seen corresponding path program 1 times [2020-07-20 03:38:55,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:55,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590686207] [2020-07-20 03:38:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2416c5dd [2020-07-20 03:38:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:55,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590686207] [2020-07-20 03:38:55,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:55,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:38:55,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330047344] [2020-07-20 03:38:55,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:38:55,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:55,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:38:55,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:38:55,508 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-20 03:38:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:55,691 INFO L93 Difference]: Finished difference Result 59 states and 90 transitions. [2020-07-20 03:38:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:38:55,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-20 03:38:55,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:55,720 INFO L225 Difference]: With dead ends: 59 [2020-07-20 03:38:55,721 INFO L226 Difference]: Without dead ends: 27 [2020-07-20 03:38:55,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:38:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-20 03:38:55,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-20 03:38:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 03:38:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-20 03:38:55,801 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2020-07-20 03:38:55,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:55,802 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-20 03:38:55,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:38:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-20 03:38:55,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 03:38:55,803 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:55,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:55,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:38:55,807 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:55,808 INFO L82 PathProgramCache]: Analyzing trace with hash 622671912, now seen corresponding path program 1 times [2020-07-20 03:38:55,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:55,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593095] [2020-07-20 03:38:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2416c5dd [2020-07-20 03:38:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:55,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593095] [2020-07-20 03:38:55,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:55,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 03:38:55,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147256958] [2020-07-20 03:38:55,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 03:38:55,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:55,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 03:38:55,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:38:55,973 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-07-20 03:38:56,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:56,130 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-07-20 03:38:56,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 03:38:56,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-20 03:38:56,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:56,132 INFO L225 Difference]: With dead ends: 35 [2020-07-20 03:38:56,132 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 03:38:56,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:38:56,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 03:38:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-07-20 03:38:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 03:38:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-07-20 03:38:56,140 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2020-07-20 03:38:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:56,140 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-07-20 03:38:56,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 03:38:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-07-20 03:38:56,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 03:38:56,141 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:56,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:56,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:38:56,142 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:56,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:56,143 INFO L82 PathProgramCache]: Analyzing trace with hash 59124385, now seen corresponding path program 1 times [2020-07-20 03:38:56,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:56,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266915455] [2020-07-20 03:38:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2416c5dd [2020-07-20 03:38:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:56,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266915455] [2020-07-20 03:38:56,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:56,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:38:56,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503731236] [2020-07-20 03:38:56,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:38:56,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:56,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:38:56,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:38:56,277 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-07-20 03:38:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:56,499 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-20 03:38:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 03:38:56,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-20 03:38:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:56,501 INFO L225 Difference]: With dead ends: 51 [2020-07-20 03:38:56,501 INFO L226 Difference]: Without dead ends: 49 [2020-07-20 03:38:56,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 03:38:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-20 03:38:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2020-07-20 03:38:56,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 03:38:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-20 03:38:56,509 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2020-07-20 03:38:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:56,510 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-20 03:38:56,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:38:56,510 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-20 03:38:56,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 03:38:56,511 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:56,511 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:56,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:38:56,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:56,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:56,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1951969173, now seen corresponding path program 1 times [2020-07-20 03:38:56,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:56,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157688769] [2020-07-20 03:38:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2416c5dd [2020-07-20 03:38:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:56,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157688769] [2020-07-20 03:38:56,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814634266] [2020-07-20 03:38:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b8d01f6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:38:57,253 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6b8d01f6 issued 2 check-sat command(s) [2020-07-20 03:38:57,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:38:57,257 WARN L261 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-20 03:38:57,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:38:57,348 INFO L384 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 [2020-07-20 03:38:57,349 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:57,363 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:57,369 INFO L384 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 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 03:38:57,369 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:57,384 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:57,384 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:38:57,385 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2020-07-20 03:38:57,472 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:57,473 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-20 03:38:57,475 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:57,651 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-07-20 03:38:57,652 INFO L624 ElimStorePlain]: treesize reduction 14, result has 90.7 percent of original size [2020-07-20 03:38:57,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:38:57,693 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:57,746 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:57,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:38:57,752 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:57,791 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:57,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:38:57,802 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:38:57,803 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:57,827 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:57,834 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:38:57,856 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:57,863 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-20 03:38:57,864 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:57,886 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:57,888 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:38:57,889 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:139, output treesize:30 [2020-07-20 03:38:57,979 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:57,979 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-20 03:38:57,981 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:58,067 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:58,071 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_32|], 2=[|v_#memory_$Pointer$.base_25|, |v_#memory_$Pointer$.offset_25|, |v_#memory_int_33|, |v_#memory_int_34|], 4=[|v_#memory_int_36|]} [2020-07-20 03:38:58,076 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:38:58,146 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:58,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:38:58,150 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:58,205 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:58,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:38:58,210 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:58,246 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:58,250 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:38:58,278 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:58,281 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 03:38:58,302 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:58,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 03:38:58,312 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 48 [2020-07-20 03:38:58,313 INFO L544 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:58,350 INFO L624 ElimStorePlain]: treesize reduction 8, result has 86.7 percent of original size [2020-07-20 03:38:58,352 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 6 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 03:38:58,353 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 9 variables, input treesize:317, output treesize:31 [2020-07-20 03:38:58,466 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:38:58,466 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 29 [2020-07-20 03:38:58,468 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:38:58,485 INFO L624 ElimStorePlain]: treesize reduction 8, result has 66.7 percent of original size [2020-07-20 03:38:58,486 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:38:58,486 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:3 [2020-07-20 03:38:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:58,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:38:58,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-07-20 03:38:58,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709845697] [2020-07-20 03:38:58,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 03:38:58,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:58,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 03:38:58,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-20 03:38:58,492 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 12 states. [2020-07-20 03:38:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:59,334 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-07-20 03:38:59,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 03:38:59,335 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-07-20 03:38:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:59,336 INFO L225 Difference]: With dead ends: 65 [2020-07-20 03:38:59,336 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 03:38:59,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-07-20 03:38:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 03:38:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 23. [2020-07-20 03:38:59,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 03:38:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-07-20 03:38:59,343 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2020-07-20 03:38:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:59,344 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-07-20 03:38:59,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 03:38:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-07-20 03:38:59,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:38:59,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:59,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:59,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:38:59,546 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:59,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:59,547 INFO L82 PathProgramCache]: Analyzing trace with hash -506610811, now seen corresponding path program 1 times [2020-07-20 03:38:59,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:59,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626485759] [2020-07-20 03:38:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2416c5dd [2020-07-20 03:38:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:38:59,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:38:59,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626485759] [2020-07-20 03:38:59,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:38:59,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:38:59,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59931303] [2020-07-20 03:38:59,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:38:59,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:38:59,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:38:59,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:38:59,663 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-07-20 03:38:59,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:38:59,824 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-07-20 03:38:59,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:38:59,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-20 03:38:59,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:38:59,826 INFO L225 Difference]: With dead ends: 39 [2020-07-20 03:38:59,826 INFO L226 Difference]: Without dead ends: 31 [2020-07-20 03:38:59,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 03:38:59,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-20 03:38:59,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2020-07-20 03:38:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 03:38:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-07-20 03:38:59,832 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 19 [2020-07-20 03:38:59,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:38:59,833 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-07-20 03:38:59,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:38:59,833 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-07-20 03:38:59,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:38:59,834 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:38:59,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:38:59,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 03:38:59,834 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:38:59,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:38:59,835 INFO L82 PathProgramCache]: Analyzing trace with hash -506551229, now seen corresponding path program 1 times [2020-07-20 03:38:59,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:38:59,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844652646] [2020-07-20 03:38:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2416c5dd [2020-07-20 03:38:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:38:59,846 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:38:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:38:59,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:38:59,877 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:38:59,877 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:38:59,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 03:38:59,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:38:59 BoogieIcfgContainer [2020-07-20 03:38:59,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:38:59,910 INFO L168 Benchmark]: Toolchain (without parser) took 6252.14 ms. Allocated memory was 135.8 MB in the beginning and 257.4 MB in the end (delta: 121.6 MB). Free memory was 99.2 MB in the beginning and 182.3 MB in the end (delta: -83.2 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:59,911 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 03:38:59,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.89 ms. Allocated memory was 135.8 MB in the beginning and 200.8 MB in the end (delta: 65.0 MB). Free memory was 98.8 MB in the beginning and 168.4 MB in the end (delta: -69.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:59,913 INFO L168 Benchmark]: Boogie Preprocessor took 77.63 ms. Allocated memory is still 200.8 MB. Free memory was 168.4 MB in the beginning and 164.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:59,914 INFO L168 Benchmark]: RCFGBuilder took 702.63 ms. Allocated memory is still 200.8 MB. Free memory was 164.8 MB in the beginning and 118.3 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:38:59,914 INFO L168 Benchmark]: TraceAbstraction took 4764.88 ms. Allocated memory was 200.8 MB in the beginning and 257.4 MB in the end (delta: 56.6 MB). Free memory was 117.5 MB in the beginning and 182.3 MB in the end (delta: -64.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 03:38:59,918 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 700.89 ms. Allocated memory was 135.8 MB in the beginning and 200.8 MB in the end (delta: 65.0 MB). Free memory was 98.8 MB in the beginning and 168.4 MB in the end (delta: -69.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.63 ms. Allocated memory is still 200.8 MB. Free memory was 168.4 MB in the beginning and 164.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 702.63 ms. Allocated memory is still 200.8 MB. Free memory was 164.8 MB in the beginning and 118.3 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4764.88 ms. Allocated memory was 200.8 MB in the beginning and 257.4 MB in the end (delta: 56.6 MB). Free memory was 117.5 MB in the beginning and 182.3 MB in the end (delta: -64.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* list = malloc(sizeof(SLL)); [L995] list->next = ((void*)0) [L996] list->prev = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1029] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1030] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1030] COND FALSE !(!(BLACK == end->colour)) [L1032] COND TRUE ((void*)0) != end [L1034] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1034] COND FALSE !(RED == end->colour) [L1040] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1040] COND TRUE !(end->next) [L1040] __VERIFIER_error() VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 148 SDslu, 286 SDs, 0 SdLazy, 427 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 71 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 107 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 6 QuantifiedInterpolants, 9478 SizeOfPredicates, 13 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...