/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext-properties/simple-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:56:14,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:56:14,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:56:14,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:56:14,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:56:14,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:56:14,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:56:14,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:56:14,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:56:14,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:56:14,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:56:14,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:56:14,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:56:14,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:56:14,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:56:14,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:56:14,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:56:14,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:56:14,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:56:14,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:56:14,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:56:14,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:56:14,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:56:14,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:56:14,681 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:56:14,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:56:14,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:56:14,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:56:14,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:56:14,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:56:14,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:56:14,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:56:14,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:56:14,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:56:14,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:56:14,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:56:14,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:56:14,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:56:14,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:56:14,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:56:14,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:56:14,698 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 13:56:14,738 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:56:14,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:56:14,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:56:14,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:56:14,740 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:56:14,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:56:14,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:56:14,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:56:14,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:56:14,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:56:14,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:56:14,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:56:14,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:56:14,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:56:14,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:56:14,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:56:14,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:56:14,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:56:14,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:56:14,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:56:14,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:56:14,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:56:14,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:56:14,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:56:14,748 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:56:14,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:56:14,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:14,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:56:14,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:56:14,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 [2020-07-20 13:56:15,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:56:15,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:56:15,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:56:15,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:56:15,083 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:56:15,084 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/simple-ext.i [2020-07-20 13:56:15,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8370dbba0/e23ddf4a727046bcb80b4ece84f69d8e/FLAG02cb10028 [2020-07-20 13:56:15,658 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:56:15,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/simple-ext.i [2020-07-20 13:56:15,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8370dbba0/e23ddf4a727046bcb80b4ece84f69d8e/FLAG02cb10028 [2020-07-20 13:56:15,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8370dbba0/e23ddf4a727046bcb80b4ece84f69d8e [2020-07-20 13:56:15,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:56:15,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:56:15,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:56:16,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:56:16,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:56:16,005 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:56:15" (1/1) ... [2020-07-20 13:56:16,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d8b5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16, skipping insertion in model container [2020-07-20 13:56:16,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:56:15" (1/1) ... [2020-07-20 13:56:16,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:56:16,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:56:16,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:56:16,507 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:56:16,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:56:16,652 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:56:16,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16 WrapperNode [2020-07-20 13:56:16,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:56:16,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:56:16,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:56:16,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:56:16,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16" (1/1) ... [2020-07-20 13:56:16,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16" (1/1) ... [2020-07-20 13:56:16,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16" (1/1) ... [2020-07-20 13:56:16,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16" (1/1) ... [2020-07-20 13:56:16,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16" (1/1) ... [2020-07-20 13:56:16,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16" (1/1) ... [2020-07-20 13:56:16,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16" (1/1) ... [2020-07-20 13:56:16,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:56:16,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:56:16,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:56:16,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:56:16,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16" (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 13:56:16,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:56:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:56:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 13:56:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 13:56:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-20 13:56:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-20 13:56:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-20 13:56:16,783 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-20 13:56:16,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:56:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:56:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:56:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 13:56:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 13:56:16,784 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 13:56:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 13:56:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 13:56:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 13:56:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 13:56:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 13:56:16,785 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 13:56:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 13:56:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 13:56:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 13:56:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 13:56:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 13:56:16,786 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 13:56:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 13:56:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 13:56:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 13:56:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-20 13:56:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-20 13:56:16,787 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-20 13:56:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 13:56:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 13:56:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 13:56:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 13:56:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 13:56:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 13:56:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 13:56:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 13:56:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 13:56:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 13:56:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 13:56:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 13:56:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 13:56:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 13:56:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 13:56:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 13:56:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 13:56:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 13:56:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 13:56:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 13:56:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 13:56:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 13:56:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 13:56:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 13:56:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 13:56:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 13:56:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 13:56:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 13:56:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 13:56:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 13:56:16,791 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 13:56:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 13:56:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 13:56:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 13:56:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:56:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 13:56:16,792 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 13:56:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:56:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 13:56:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 13:56:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 13:56:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 13:56:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 13:56:16,793 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 13:56:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 13:56:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 13:56:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 13:56:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 13:56:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 13:56:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 13:56:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 13:56:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 13:56:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 13:56:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 13:56:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 13:56:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 13:56:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 13:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 13:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 13:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 13:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 13:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 13:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 13:56:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 13:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 13:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 13:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 13:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 13:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 13:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 13:56:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 13:56:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 13:56:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 13:56:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 13:56:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 13:56:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 13:56:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 13:56:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 13:56:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 13:56:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 13:56:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 13:56:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 13:56:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 13:56:16,799 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 13:56:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 13:56:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 13:56:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-20 13:56:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:56:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:56:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:56:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:56:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:56:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:56:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:56:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:56:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:56:17,151 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-20 13:56:17,302 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:56:17,302 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 13:56:17,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:56:17 BoogieIcfgContainer [2020-07-20 13:56:17,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:56:17,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:56:17,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:56:17,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:56:17,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:56:15" (1/3) ... [2020-07-20 13:56:17,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5de06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:56:17, skipping insertion in model container [2020-07-20 13:56:17,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:16" (2/3) ... [2020-07-20 13:56:17,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5de06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:56:17, skipping insertion in model container [2020-07-20 13:56:17,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:56:17" (3/3) ... [2020-07-20 13:56:17,316 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2020-07-20 13:56:17,325 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:56:17,334 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:56:17,345 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:56:17,367 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:56:17,367 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:56:17,367 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:56:17,368 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:56:17,368 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:56:17,368 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:56:17,368 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:56:17,368 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:56:17,388 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-20 13:56:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 13:56:17,395 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:17,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:56:17,397 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:17,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:17,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1015793902, now seen corresponding path program 1 times [2020-07-20 13:56:17,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:17,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52335745] [2020-07-20 13:56:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:17,628 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:56:17,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:17,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:56:17,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:17,661 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 13:56:17,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:56:17,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52335745] [2020-07-20 13:56:17,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:56:17,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:56:17,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13146717] [2020-07-20 13:56:17,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:56:17,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:17,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:56:17,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:56:17,693 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-07-20 13:56:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:17,728 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2020-07-20 13:56:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:56:17,729 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-20 13:56:17,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:17,740 INFO L225 Difference]: With dead ends: 43 [2020-07-20 13:56:17,741 INFO L226 Difference]: Without dead ends: 19 [2020-07-20 13:56:17,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:56:17,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-20 13:56:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-20 13:56:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 13:56:17,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-07-20 13:56:17,792 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2020-07-20 13:56:17,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:17,793 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-07-20 13:56:17,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:56:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-07-20 13:56:17,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 13:56:17,797 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:17,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:56:18,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:18,012 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash -831528833, now seen corresponding path program 1 times [2020-07-20 13:56:18,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:18,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707920671] [2020-07-20 13:56:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:18,124 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:56:18,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:56:18,125 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:56:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:56:18,140 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:56:18,159 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:56:18,160 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:56:18,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:18,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:56:18 BoogieIcfgContainer [2020-07-20 13:56:18,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:56:18,407 INFO L168 Benchmark]: Toolchain (without parser) took 2409.14 ms. Allocated memory was 146.3 MB in the beginning and 238.6 MB in the end (delta: 92.3 MB). Free memory was 102.5 MB in the beginning and 166.7 MB in the end (delta: -64.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:18,407 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:56:18,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 653.56 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 170.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:18,409 INFO L168 Benchmark]: Boogie Preprocessor took 63.78 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 167.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:18,410 INFO L168 Benchmark]: RCFGBuilder took 589.07 ms. Allocated memory is still 203.9 MB. Free memory was 167.5 MB in the beginning and 123.4 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:18,411 INFO L168 Benchmark]: TraceAbstraction took 1095.84 ms. Allocated memory was 203.9 MB in the beginning and 238.6 MB in the end (delta: 34.6 MB). Free memory was 122.4 MB in the beginning and 166.7 MB in the end (delta: -44.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 13:56:18,415 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 653.56 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 170.3 MB in the end (delta: -67.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.78 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 167.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 589.07 ms. Allocated memory is still 203.9 MB. Free memory was 167.5 MB in the beginning and 123.4 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1095.84 ms. Allocated memory was 203.9 MB in the beginning and 238.6 MB in the end (delta: 34.6 MB). Free memory was 122.4 MB in the beginning and 166.7 MB in the end (delta: -44.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L522] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L523] List t; [L524] List p = a; [L525] int i = 0; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L526] i < 30 && __VERIFIER_nondet_int() [L526] i < 30 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 30 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L526] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L534] p->h = i [L535] p->n = 0 [L536] p = a [L537] i = 0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L538] COND TRUE p!=0 [L539] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=0] [L539] COND TRUE p->h != 1 [L540] __VERIFIER_error() VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...