/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 NUM_FUNCTIONS --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/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:19:06,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:19:06,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:19:06,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:19:06,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:19:06,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:19:06,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:19:06,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:19:06,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:19:06,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:19:06,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:19:06,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:19:06,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:19:06,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:19:06,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:19:06,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:19:06,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:19:06,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:19:06,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:19:06,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:19:06,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:19:06,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:19:06,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:19:06,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:19:06,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:19:06,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:19:06,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:19:06,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:19:06,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:19:06,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 23:19:06,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 23:19:06,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 23:19:06,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 23:19:06,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 23:19:06,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 23:19:06,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 23:19:06,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 23:19:06,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 23:19:06,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:19:06,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:19:06,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:19:06,576 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 [2020-07-19 23:19:06,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:19:06,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:19:06,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:19:06,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:19:06,593 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:19:06,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:19:06,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:19:06,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:19:06,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:19:06,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:19:06,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:19:06,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:19:06,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:19:06,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:19:06,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:19:06,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:19:06,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:19:06,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:19:06,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:19:06,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:19:06,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:19:06,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:19:06,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:19:06,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:19:06,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:19:06,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:19:06,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:19:06,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:19:06,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:19:06,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:19:06,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:19:06,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:19:06,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:19:06,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:19:06,910 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:19:06,911 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-07-19 23:19:06,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9794f0669/b2f676dc98d04770bd650dc12304612e/FLAGb32770355 [2020-07-19 23:19:07,573 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:19:07,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-07-19 23:19:07,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9794f0669/b2f676dc98d04770bd650dc12304612e/FLAGb32770355 [2020-07-19 23:19:07,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9794f0669/b2f676dc98d04770bd650dc12304612e [2020-07-19 23:19:07,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:19:07,859 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:19:07,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:19:07,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:19:07,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:19:07,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:19:07" (1/1) ... [2020-07-19 23:19:07,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfb43f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07, skipping insertion in model container [2020-07-19 23:19:07,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:19:07" (1/1) ... [2020-07-19 23:19:07,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:19:07,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:19:08,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:19:08,436 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:19:08,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:19:08,544 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:19:08,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:08 WrapperNode [2020-07-19 23:19:08,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:19:08,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:19:08,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:19:08,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:19:08,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:08" (1/1) ... [2020-07-19 23:19:08,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:08" (1/1) ... [2020-07-19 23:19:08,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:08" (1/1) ... [2020-07-19 23:19:08,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:08" (1/1) ... [2020-07-19 23:19:08,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:08" (1/1) ... [2020-07-19 23:19:08,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:08" (1/1) ... [2020-07-19 23:19:08,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:08" (1/1) ... [2020-07-19 23:19:08,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:19:08,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:19:08,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:19:08,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:19:08,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:08" (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 [2020-07-19 23:19:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:19:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:19:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-19 23:19:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-19 23:19:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-19 23:19:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-19 23:19:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-19 23:19:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-19 23:19:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:19:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:19:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:19:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-19 23:19:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-19 23:19:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-19 23:19:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-19 23:19:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-19 23:19:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-19 23:19:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-19 23:19:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-19 23:19:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-19 23:19:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-19 23:19:08,674 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-19 23:19:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-19 23:19:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-19 23:19:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-19 23:19:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-19 23:19:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-19 23:19:08,675 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-19 23:19:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-19 23:19:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-19 23:19:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-19 23:19:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-19 23:19:08,676 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-19 23:19:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-19 23:19:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-19 23:19:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-19 23:19:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-19 23:19:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-19 23:19:08,677 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-19 23:19:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-19 23:19:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-19 23:19:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-19 23:19:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-19 23:19:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-19 23:19:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-19 23:19:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-19 23:19:08,678 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-19 23:19:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-19 23:19:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-19 23:19:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-19 23:19:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-19 23:19:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-19 23:19:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-19 23:19:08,679 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-19 23:19:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-19 23:19:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-19 23:19:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-19 23:19:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-19 23:19:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-19 23:19:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-19 23:19:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-19 23:19:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-19 23:19:08,680 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-19 23:19:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-19 23:19:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-19 23:19:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-19 23:19:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 23:19:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-19 23:19:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-19 23:19:08,681 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 23:19:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-19 23:19:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-19 23:19:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-19 23:19:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-19 23:19:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:19:08,682 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-19 23:19:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-19 23:19:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-19 23:19:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-19 23:19:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-19 23:19:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-19 23:19:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-19 23:19:08,683 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-19 23:19:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-19 23:19:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-19 23:19:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-19 23:19:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-19 23:19:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-19 23:19:08,684 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-19 23:19:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-19 23:19:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-19 23:19:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-19 23:19:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-19 23:19:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-19 23:19:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-19 23:19:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-19 23:19:08,685 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-19 23:19:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-19 23:19:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-19 23:19:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-19 23:19:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-19 23:19:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-19 23:19:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-19 23:19:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-19 23:19:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-19 23:19:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-19 23:19:08,686 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-19 23:19:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-19 23:19:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-19 23:19:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-19 23:19:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-19 23:19:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-19 23:19:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-19 23:19:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-19 23:19:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-19 23:19:08,687 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-19 23:19:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-19 23:19:08,688 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-19 23:19:08,693 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-19 23:19:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:19:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 23:19:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:19:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 23:19:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 23:19:08,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:19:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:19:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:19:08,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:19:09,052 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-19 23:19:09,289 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:19:09,290 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-19 23:19:09,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:19:09 BoogieIcfgContainer [2020-07-19 23:19:09,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:19:09,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:19:09,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:19:09,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:19:09,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:19:07" (1/3) ... [2020-07-19 23:19:09,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f25559f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:19:09, skipping insertion in model container [2020-07-19 23:19:09,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:08" (2/3) ... [2020-07-19 23:19:09,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f25559f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:19:09, skipping insertion in model container [2020-07-19 23:19:09,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:19:09" (3/3) ... [2020-07-19 23:19:09,303 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-07-19 23:19:09,312 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:19:09,319 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:19:09,332 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:19:09,351 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:19:09,351 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:19:09,352 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:19:09,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:19:09,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:19:09,352 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:19:09,353 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:19:09,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:19:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-19 23:19:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-19 23:19:09,379 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:09,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:09,381 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:09,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:09,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1184417696, now seen corresponding path program 1 times [2020-07-19 23:19:09,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:09,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197476134] [2020-07-19 23:19:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@324e8e4c [2020-07-19 23:19:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:09,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197476134] [2020-07-19 23:19:09,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:09,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 23:19:09,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325019741] [2020-07-19 23:19:09,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:19:09,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:09,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:19:09,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:19:09,647 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-07-19 23:19:09,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:09,807 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2020-07-19 23:19:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:19:09,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-07-19 23:19:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:09,821 INFO L225 Difference]: With dead ends: 46 [2020-07-19 23:19:09,821 INFO L226 Difference]: Without dead ends: 24 [2020-07-19 23:19:09,828 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 [2020-07-19 23:19:09,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-19 23:19:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-19 23:19:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-19 23:19:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-19 23:19:09,869 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2020-07-19 23:19:09,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:09,870 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-19 23:19:09,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:19:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-19 23:19:09,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 23:19:09,871 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:09,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:09,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:19:09,872 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:09,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:09,873 INFO L82 PathProgramCache]: Analyzing trace with hash -218242506, now seen corresponding path program 1 times [2020-07-19 23:19:09,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:09,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063632581] [2020-07-19 23:19:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@324e8e4c [2020-07-19 23:19:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:10,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063632581] [2020-07-19 23:19:10,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:10,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:19:10,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144735127] [2020-07-19 23:19:10,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:19:10,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:10,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:19:10,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:19:10,049 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2020-07-19 23:19:10,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:10,216 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-07-19 23:19:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:19:10,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-19 23:19:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:10,218 INFO L225 Difference]: With dead ends: 48 [2020-07-19 23:19:10,218 INFO L226 Difference]: Without dead ends: 44 [2020-07-19 23:19:10,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:19:10,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-19 23:19:10,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2020-07-19 23:19:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-19 23:19:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-07-19 23:19:10,229 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 17 [2020-07-19 23:19:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:10,229 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-07-19 23:19:10,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:19:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-07-19 23:19:10,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 23:19:10,230 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:10,231 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:10,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:19:10,231 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:10,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:10,231 INFO L82 PathProgramCache]: Analyzing trace with hash 771025649, now seen corresponding path program 1 times [2020-07-19 23:19:10,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:10,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694652701] [2020-07-19 23:19:10,232 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@324e8e4c [2020-07-19 23:19:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:10,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694652701] [2020-07-19 23:19:10,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:10,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:19:10,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596340471] [2020-07-19 23:19:10,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:19:10,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:10,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:19:10,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:19:10,332 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-07-19 23:19:10,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:10,481 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-07-19 23:19:10,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:19:10,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-19 23:19:10,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:10,483 INFO L225 Difference]: With dead ends: 50 [2020-07-19 23:19:10,483 INFO L226 Difference]: Without dead ends: 42 [2020-07-19 23:19:10,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:19:10,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-19 23:19:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-07-19 23:19:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-19 23:19:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-07-19 23:19:10,491 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2020-07-19 23:19:10,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:10,491 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-07-19 23:19:10,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:19:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-07-19 23:19:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 23:19:10,492 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:10,493 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:10,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 23:19:10,493 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:10,494 INFO L82 PathProgramCache]: Analyzing trace with hash -472715872, now seen corresponding path program 1 times [2020-07-19 23:19:10,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:10,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487278803] [2020-07-19 23:19:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@324e8e4c [2020-07-19 23:19:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:10,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487278803] [2020-07-19 23:19:10,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:10,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:19:10,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111117380] [2020-07-19 23:19:10,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:19:10,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:10,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:19:10,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:19:10,625 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2020-07-19 23:19:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:10,773 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-07-19 23:19:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:19:10,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-19 23:19:10,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:10,777 INFO L225 Difference]: With dead ends: 48 [2020-07-19 23:19:10,777 INFO L226 Difference]: Without dead ends: 38 [2020-07-19 23:19:10,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:19:10,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-19 23:19:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2020-07-19 23:19:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-19 23:19:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-07-19 23:19:10,786 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2020-07-19 23:19:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:10,787 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-07-19 23:19:10,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:19:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-07-19 23:19:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-19 23:19:10,788 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:10,789 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] [2020-07-19 23:19:10,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 23:19:10,789 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:10,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:10,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1962636917, now seen corresponding path program 1 times [2020-07-19 23:19:10,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:10,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93636807] [2020-07-19 23:19:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@324e8e4c [2020-07-19 23:19:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:10,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93636807] [2020-07-19 23:19:10,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:10,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:19:10,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866796810] [2020-07-19 23:19:10,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:19:10,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:10,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:19:10,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:19:10,853 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-07-19 23:19:10,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:10,918 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-07-19 23:19:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:19:10,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-19 23:19:10,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:10,920 INFO L225 Difference]: With dead ends: 54 [2020-07-19 23:19:10,920 INFO L226 Difference]: Without dead ends: 38 [2020-07-19 23:19:10,920 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 [2020-07-19 23:19:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-19 23:19:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-07-19 23:19:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-19 23:19:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-07-19 23:19:10,926 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 23 [2020-07-19 23:19:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:10,926 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-07-19 23:19:10,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:19:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-07-19 23:19:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-19 23:19:10,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:10,928 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] [2020-07-19 23:19:10,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 23:19:10,928 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:10,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1888593434, now seen corresponding path program 1 times [2020-07-19 23:19:10,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:10,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199688132] [2020-07-19 23:19:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@324e8e4c [2020-07-19 23:19:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:19:10,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:19:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:19:10,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:19:11,008 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:19:11,009 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:19:11,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 23:19:11,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:19:11 BoogieIcfgContainer [2020-07-19 23:19:11,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:19:11,068 INFO L168 Benchmark]: Toolchain (without parser) took 3210.40 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 101.4 MB in the beginning and 106.5 MB in the end (delta: -5.1 MB). Peak memory consumption was 90.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:11,069 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 23:19:11,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.25 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 167.1 MB in the end (delta: -66.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:11,071 INFO L168 Benchmark]: Boogie Preprocessor took 61.50 ms. Allocated memory is still 201.3 MB. Free memory was 167.1 MB in the beginning and 164.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:11,072 INFO L168 Benchmark]: RCFGBuilder took 685.90 ms. Allocated memory is still 201.3 MB. Free memory was 164.4 MB in the beginning and 120.7 MB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:11,073 INFO L168 Benchmark]: TraceAbstraction took 1770.64 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 120.1 MB in the beginning and 106.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:11,077 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 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.25 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 167.1 MB in the end (delta: -66.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.50 ms. Allocated memory is still 201.3 MB. Free memory was 167.1 MB in the beginning and 164.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 685.90 ms. Allocated memory is still 201.3 MB. Free memory was 164.4 MB in the beginning and 120.7 MB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1770.64 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 120.1 MB in the beginning and 106.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L524] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L525] p = a VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) [L528] p->h = 1 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L532] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L533] COND FALSE !(t == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L534] p->n = t [L535] EXPR p->n [L535] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 [L538] p = a VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L539] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L540] EXPR p->h VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=1, t={-2:0}] [L540] COND FALSE !(p->h == 2) [L545] EXPR p->h VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, p->h=1, t={-2:0}] [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 120 SDtfs, 73 SDslu, 178 SDs, 0 SdLazy, 288 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 4694 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 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...