/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 BIGGEST_EQUIVALENCE_CLASS --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-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:47:54,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:47:54,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:47:54,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:47:54,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:47:54,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:47:54,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:47:54,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:47:54,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:47:54,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:47:54,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:47:54,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:47:54,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:47:54,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:47:54,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:47:54,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:47:54,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:47:54,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:47:54,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:47:54,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:47:54,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:47:54,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:47:54,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:47:54,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:47:54,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 05:47:54,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 05:47:54,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 05:47:54,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 05:47:54,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 05:47:54,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 05:47:54,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 05:47:54,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 05:47:54,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 05:47:54,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 05:47:54,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 05:47:54,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 05:47:54,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 05:47:54,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 05:47:54,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:47:54,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:47:54,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:47:54,552 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 05:47:54,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:47:54,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:47:54,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:47:54,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:47:54,569 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:47:54,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:47:54,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:47:54,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:47:54,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:47:54,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:47:54,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:47:54,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:47:54,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:47:54,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:47:54,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:47:54,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:47:54,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:47:54,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:47:54,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:47:54,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:47:54,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:47:54,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:47:54,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:47:54,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:47:54,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:47:54,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:47:54,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:47:54,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:47:54,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:47:54,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 05:47:54,869 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:47:54,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:47:54,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:47:54,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:47:54,891 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:47:54,893 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-07-20 05:47:54,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d4a05db/a27ac10cd1b047e1a29745c2933efe97/FLAG69da3f5ba [2020-07-20 05:47:55,469 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:47:55,470 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-07-20 05:47:55,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d4a05db/a27ac10cd1b047e1a29745c2933efe97/FLAG69da3f5ba [2020-07-20 05:47:55,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d4a05db/a27ac10cd1b047e1a29745c2933efe97 [2020-07-20 05:47:55,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:47:55,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:47:55,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:47:55,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:47:55,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:47:55,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:47:55" (1/1) ... [2020-07-20 05:47:55,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c3b0815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:55, skipping insertion in model container [2020-07-20 05:47:55,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:47:55" (1/1) ... [2020-07-20 05:47:55,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:47:55,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:47:56,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:47:56,388 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:47:56,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:47:56,511 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:47:56,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:56 WrapperNode [2020-07-20 05:47:56,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:47:56,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:47:56,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:47:56,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:47:56,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:56" (1/1) ... [2020-07-20 05:47:56,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:56" (1/1) ... [2020-07-20 05:47:56,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:56" (1/1) ... [2020-07-20 05:47:56,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:56" (1/1) ... [2020-07-20 05:47:56,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:56" (1/1) ... [2020-07-20 05:47:56,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:56" (1/1) ... [2020-07-20 05:47:56,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:56" (1/1) ... [2020-07-20 05:47:56,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:47:56,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:47:56,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:47:56,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:47:56,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:56" (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 05:47:56,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:47:56,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:47:56,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:47:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 05:47:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 05:47:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 05:47:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 05:47:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 05:47:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 05:47:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 05:47:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 05:47:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 05:47:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 05:47:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 05:47:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 05:47:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 05:47:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 05:47:56,655 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 05:47:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 05:47:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 05:47:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 05:47:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 05:47:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 05:47:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 05:47:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 05:47:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 05:47:56,656 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 05:47:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 05:47:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 05:47:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 05:47:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 05:47:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 05:47:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 05:47:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 05:47:56,657 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 05:47:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 05:47:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 05:47:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 05:47:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 05:47:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 05:47:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 05:47:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 05:47:56,658 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 05:47:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 05:47:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 05:47:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 05:47:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 05:47:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 05:47:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 05:47:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 05:47:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 05:47:56,659 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 05:47:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 05:47:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 05:47:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 05:47:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 05:47:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 05:47:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 05:47:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 05:47:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 05:47:56,660 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 05:47:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 05:47:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 05:47:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 05:47:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 05:47:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 05:47:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 05:47:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 05:47:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 05:47:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 05:47:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 05:47:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 05:47:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 05:47:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 05:47:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 05:47:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 05:47:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 05:47:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 05:47:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 05:47:56,663 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 05:47:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 05:47:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 05:47:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 05:47:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 05:47:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 05:47:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 05:47:56,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 05:47:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 05:47:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 05:47:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 05:47:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 05:47:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 05:47:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 05:47:56,665 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 05:47:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 05:47:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 05:47:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 05:47:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 05:47:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 05:47:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 05:47:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 05:47:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 05:47:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 05:47:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 05:47:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 05:47:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 05:47:56,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 05:47:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:47:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:47:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 05:47:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 05:47:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 05:47:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 05:47:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 05:47:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 05:47:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:47:56,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:47:57,318 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:47:57,318 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-07-20 05:47:57,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:47:57 BoogieIcfgContainer [2020-07-20 05:47:57,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:47:57,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:47:57,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:47:57,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:47:57,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:47:55" (1/3) ... [2020-07-20 05:47:57,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f676a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:47:57, skipping insertion in model container [2020-07-20 05:47:57,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:47:56" (2/3) ... [2020-07-20 05:47:57,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f676a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:47:57, skipping insertion in model container [2020-07-20 05:47:57,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:47:57" (3/3) ... [2020-07-20 05:47:57,331 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-07-20 05:47:57,341 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:47:57,349 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-07-20 05:47:57,364 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-07-20 05:47:57,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:47:57,389 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:47:57,389 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:47:57,389 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:47:57,390 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:47:57,390 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:47:57,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:47:57,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:47:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-07-20 05:47:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 05:47:57,418 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:47:57,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:47:57,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:47:57,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:47:57,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1780468538, now seen corresponding path program 1 times [2020-07-20 05:47:57,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:47:57,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112899275] [2020-07-20 05:47:57,437 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74e8d543 [2020-07-20 05:47:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:47:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:47:57,624 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 05:47:57,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112899275] [2020-07-20 05:47:57,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:47:57,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:47:57,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443414717] [2020-07-20 05:47:57,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:47:57,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:47:57,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:47:57,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:47:57,659 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2020-07-20 05:47:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:47:57,898 INFO L93 Difference]: Finished difference Result 112 states and 178 transitions. [2020-07-20 05:47:57,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:47:57,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-20 05:47:57,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:47:57,912 INFO L225 Difference]: With dead ends: 112 [2020-07-20 05:47:57,912 INFO L226 Difference]: Without dead ends: 54 [2020-07-20 05:47:57,916 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 05:47:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-20 05:47:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-07-20 05:47:57,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 05:47:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-07-20 05:47:57,965 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 10 [2020-07-20 05:47:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:47:57,965 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-07-20 05:47:57,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:47:57,966 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-07-20 05:47:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 05:47:57,966 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:47:57,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:47:57,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:47:57,967 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:47:57,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:47:57,968 INFO L82 PathProgramCache]: Analyzing trace with hash -658139069, now seen corresponding path program 1 times [2020-07-20 05:47:57,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:47:57,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018370261] [2020-07-20 05:47:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74e8d543 [2020-07-20 05:47:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:47:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:47:58,036 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 05:47:58,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018370261] [2020-07-20 05:47:58,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:47:58,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 05:47:58,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324059721] [2020-07-20 05:47:58,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 05:47:58,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:47:58,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 05:47:58,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:47:58,040 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 4 states. [2020-07-20 05:47:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:47:58,188 INFO L93 Difference]: Finished difference Result 107 states and 130 transitions. [2020-07-20 05:47:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 05:47:58,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-20 05:47:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:47:58,190 INFO L225 Difference]: With dead ends: 107 [2020-07-20 05:47:58,190 INFO L226 Difference]: Without dead ends: 59 [2020-07-20 05:47:58,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:47:58,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-20 05:47:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-07-20 05:47:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-20 05:47:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-07-20 05:47:58,201 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2020-07-20 05:47:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:47:58,202 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-07-20 05:47:58,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 05:47:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-07-20 05:47:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 05:47:58,203 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:47:58,203 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:47:58,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:47:58,203 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:47:58,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:47:58,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1481014552, now seen corresponding path program 1 times [2020-07-20 05:47:58,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:47:58,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978472306] [2020-07-20 05:47:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74e8d543 [2020-07-20 05:47:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:47:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:47:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 05:47:58,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978472306] [2020-07-20 05:47:58,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:47:58,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 05:47:58,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136061079] [2020-07-20 05:47:58,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 05:47:58,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:47:58,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 05:47:58,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:47:58,328 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2020-07-20 05:47:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:47:58,519 INFO L93 Difference]: Finished difference Result 91 states and 109 transitions. [2020-07-20 05:47:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 05:47:58,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-20 05:47:58,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:47:58,521 INFO L225 Difference]: With dead ends: 91 [2020-07-20 05:47:58,521 INFO L226 Difference]: Without dead ends: 89 [2020-07-20 05:47:58,522 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 05:47:58,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-20 05:47:58,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 56. [2020-07-20 05:47:58,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 05:47:58,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-07-20 05:47:58,531 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 15 [2020-07-20 05:47:58,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:47:58,531 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-07-20 05:47:58,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 05:47:58,531 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-07-20 05:47:58,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 05:47:58,532 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:47:58,532 INFO L422 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] [2020-07-20 05:47:58,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 05:47:58,533 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:47:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:47:58,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1774425742, now seen corresponding path program 1 times [2020-07-20 05:47:58,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:47:58,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116254665] [2020-07-20 05:47:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@74e8d543 [2020-07-20 05:47:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:47:58,575 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:47:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:47:58,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:47:58,665 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 05:47:58,666 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 05:47:58,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 05:47:58,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:47:58 BoogieIcfgContainer [2020-07-20 05:47:58,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:47:58,753 INFO L168 Benchmark]: Toolchain (without parser) took 2971.64 ms. Allocated memory was 136.3 MB in the beginning and 230.7 MB in the end (delta: 94.4 MB). Free memory was 98.1 MB in the beginning and 126.9 MB in the end (delta: -28.8 MB). Peak memory consumption was 65.6 MB. Max. memory is 7.1 GB. [2020-07-20 05:47:58,756 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 05:47:58,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.32 ms. Allocated memory was 136.3 MB in the beginning and 202.4 MB in the end (delta: 66.1 MB). Free memory was 97.7 MB in the beginning and 169.7 MB in the end (delta: -72.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-07-20 05:47:58,759 INFO L168 Benchmark]: Boogie Preprocessor took 76.60 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 166.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-20 05:47:58,760 INFO L168 Benchmark]: RCFGBuilder took 733.25 ms. Allocated memory is still 202.4 MB. Free memory was 166.1 MB in the beginning and 113.2 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2020-07-20 05:47:58,767 INFO L168 Benchmark]: TraceAbstraction took 1424.79 ms. Allocated memory was 202.4 MB in the beginning and 230.7 MB in the end (delta: 28.3 MB). Free memory was 113.2 MB in the beginning and 126.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-20 05:47:58,779 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 136.3 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.32 ms. Allocated memory was 136.3 MB in the beginning and 202.4 MB in the end (delta: 66.1 MB). Free memory was 97.7 MB in the beginning and 169.7 MB in the end (delta: -72.0 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.60 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 166.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 733.25 ms. Allocated memory is still 202.4 MB. Free memory was 166.1 MB in the beginning and 113.2 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1424.79 ms. Allocated memory was 202.4 MB in the beginning and 230.7 MB in the end (delta: 28.3 MB). Free memory was 113.2 MB in the beginning and 126.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-2:0}] [L1008] COND TRUE \read(marked) [L1009] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-2:0}] [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=1, x={-1:0}] [L1016] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=1, x={-1:0}] [L1017] marked = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}] [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next={-2:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=2, head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-1:0}, x->next={-2:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, marked=0, x={-2:0}, x->data=1] [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, marked=0, x={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 168 SDtfs, 156 SDslu, 68 SDs, 0 SdLazy, 243 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 3 MinimizatonAttempts, 34 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 1050 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...