/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:01:56,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:01:56,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:01:56,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:01:56,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:01:56,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:01:56,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:01:56,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:01:56,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:01:56,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:01:56,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:01:56,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:01:56,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:01:56,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:01:56,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:01:56,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:01:56,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:01:56,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:01:56,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:01:56,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:01:56,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:01:56,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:01:56,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:01:56,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:01:56,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 20:01:56,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 20:01:56,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 20:01:56,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 20:01:56,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 20:01:56,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 20:01:56,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 20:01:56,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 20:01:56,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 20:01:56,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 20:01:57,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 20:01:57,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 20:01:57,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 20:01:57,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 20:01:57,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:01:57,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:01:57,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:01:57,005 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 [2020-07-21 20:01:57,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:01:57,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:01:57,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:01:57,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:01:57,035 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:01:57,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:01:57,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:01:57,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:01:57,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:01:57,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:01:57,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:01:57,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:01:57,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:01:57,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:01:57,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:01:57,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:01:57,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:01:57,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:01:57,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:01:57,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:01:57,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:01:57,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:01:57,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:01:57,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:01:57,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:01:57,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:01:57,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:01:57,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:01:57,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:01:57,042 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 -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 20:01:57,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:01:57,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:01:57,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:01:57,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:01:57,392 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:01:57,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-07-21 20:01:57,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14e893bdd/3444851184cf4fcb8519cdc2d5415160/FLAG96c2cbcde [2020-07-21 20:01:58,038 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:01:58,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-07-21 20:01:58,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14e893bdd/3444851184cf4fcb8519cdc2d5415160/FLAG96c2cbcde [2020-07-21 20:01:58,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14e893bdd/3444851184cf4fcb8519cdc2d5415160 [2020-07-21 20:01:58,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:01:58,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:01:58,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:01:58,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:01:58,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:01:58,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:01:58" (1/1) ... [2020-07-21 20:01:58,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606ed4e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58, skipping insertion in model container [2020-07-21 20:01:58,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:01:58" (1/1) ... [2020-07-21 20:01:58,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:01:58,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:01:58,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:01:58,842 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:01:58,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:01:58,940 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:01:58,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58 WrapperNode [2020-07-21 20:01:58,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:01:58,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:01:58,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:01:58,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:01:58,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58" (1/1) ... [2020-07-21 20:01:58,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58" (1/1) ... [2020-07-21 20:01:59,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58" (1/1) ... [2020-07-21 20:01:59,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58" (1/1) ... [2020-07-21 20:01:59,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58" (1/1) ... [2020-07-21 20:01:59,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58" (1/1) ... [2020-07-21 20:01:59,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58" (1/1) ... [2020-07-21 20:01:59,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:01:59,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:01:59,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:01:59,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:01:59,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58" (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 [2020-07-21 20:01:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:01:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:01:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:01:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 20:01:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 20:01:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 20:01:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 20:01:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 20:01:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 20:01:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 20:01:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 20:01:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 20:01:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 20:01:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 20:01:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 20:01:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 20:01:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 20:01:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 20:01:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 20:01:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 20:01:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 20:01:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 20:01:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 20:01:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 20:01:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 20:01:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 20:01:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 20:01:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 20:01:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 20:01:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 20:01:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 20:01:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 20:01:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 20:01:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 20:01:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 20:01:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 20:01:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 20:01:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 20:01:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 20:01:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 20:01:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 20:01:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 20:01:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 20:01:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 20:01:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 20:01:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 20:01:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 20:01:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 20:01:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 20:01:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 20:01:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 20:01:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 20:01:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 20:01:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 20:01:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 20:01:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 20:01:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 20:01:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 20:01:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 20:01:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 20:01:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 20:01:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 20:01:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 20:01:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 20:01:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 20:01:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 20:01:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 20:01:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 20:01:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 20:01:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 20:01:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 20:01:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 20:01:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 20:01:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 20:01:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 20:01:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 20:01:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 20:01:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 20:01:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 20:01:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 20:01:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 20:01:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 20:01:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 20:01:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 20:01:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 20:01:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 20:01:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 20:01:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 20:01:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 20:01:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 20:01:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 20:01:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 20:01:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 20:01:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 20:01:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 20:01:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 20:01:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 20:01:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 20:01:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 20:01:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 20:01:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 20:01:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 20:01:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 20:01:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 20:01:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 20:01:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 20:01:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:01:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:01:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:01:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 20:01:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 20:01:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 20:01:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 20:01:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 20:01:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 20:01:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:01:59,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:01:59,768 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:01:59,769 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-21 20:01:59,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:01:59 BoogieIcfgContainer [2020-07-21 20:01:59,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:01:59,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:01:59,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:01:59,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:01:59,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:01:58" (1/3) ... [2020-07-21 20:01:59,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602675fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:01:59, skipping insertion in model container [2020-07-21 20:01:59,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:01:58" (2/3) ... [2020-07-21 20:01:59,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602675fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:01:59, skipping insertion in model container [2020-07-21 20:01:59,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:01:59" (3/3) ... [2020-07-21 20:01:59,783 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-07-21 20:01:59,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:01:59,802 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-21 20:01:59,816 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-21 20:01:59,840 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:01:59,841 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:01:59,841 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:01:59,841 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:01:59,841 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:01:59,841 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:01:59,841 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:01:59,842 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:01:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-21 20:01:59,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 20:01:59,869 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:01:59,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:01:59,871 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:01:59,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:01:59,878 INFO L82 PathProgramCache]: Analyzing trace with hash -810798801, now seen corresponding path program 1 times [2020-07-21 20:01:59,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:01:59,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915001665] [2020-07-21 20:01:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 20:02:00,080 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:02:00,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:02:00,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:02:00,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:02:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:02:00,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:02:00,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915001665] [2020-07-21 20:02:00,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:02:00,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 20:02:00,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334909705] [2020-07-21 20:02:00,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 20:02:00,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:02:00,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 20:02:00,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:02:00,184 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-07-21 20:02:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:02:00,311 INFO L93 Difference]: Finished difference Result 67 states and 107 transitions. [2020-07-21 20:02:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 20:02:00,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-21 20:02:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:02:00,323 INFO L225 Difference]: With dead ends: 67 [2020-07-21 20:02:00,323 INFO L226 Difference]: Without dead ends: 33 [2020-07-21 20:02:00,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:02:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-21 20:02:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-07-21 20:02:00,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 20:02:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-07-21 20:02:00,368 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 10 [2020-07-21 20:02:00,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:02:00,368 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-07-21 20:02:00,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 20:02:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-07-21 20:02:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 20:02:00,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:02:00,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:02:00,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:00,584 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:02:00,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:02:00,585 INFO L82 PathProgramCache]: Analyzing trace with hash 59124385, now seen corresponding path program 1 times [2020-07-21 20:02:00,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:02:00,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352533009] [2020-07-21 20:02:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 20:02:00,688 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:02:00,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:02:00,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 20:02:00,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:02:00,750 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 20:02:00,751 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:00,755 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:00,755 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:00,756 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 20:02:00,782 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 20:02:00,783 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:00,785 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:00,786 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:00,786 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 20:02:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:02:00,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:02:00,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352533009] [2020-07-21 20:02:00,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:02:00,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:02:00,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939381638] [2020-07-21 20:02:00,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:02:00,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:02:00,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:02:00,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:02:00,798 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-07-21 20:02:00,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:02:00,934 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-21 20:02:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 20:02:00,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 20:02:00,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:02:00,936 INFO L225 Difference]: With dead ends: 51 [2020-07-21 20:02:00,936 INFO L226 Difference]: Without dead ends: 49 [2020-07-21 20:02:00,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:02:00,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-21 20:02:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2020-07-21 20:02:00,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 20:02:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-21 20:02:00,945 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2020-07-21 20:02:00,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:02:00,946 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-21 20:02:00,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:02:00,946 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-21 20:02:00,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 20:02:00,947 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:02:00,947 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:02:01,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:01,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:02:01,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:02:01,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1951969173, now seen corresponding path program 1 times [2020-07-21 20:02:01,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:02:01,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904903661] [2020-07-21 20:02:01,163 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:01,651 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:02:01,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:02:01,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-21 20:02:01,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:02:01,675 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 20:02:01,676 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:01,688 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:01,694 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 20:02:01,695 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:01,708 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:01,709 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:01,709 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2020-07-21 20:02:01,797 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:01,798 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-21 20:02:01,800 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:01,932 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-07-21 20:02:01,933 INFO L624 ElimStorePlain]: treesize reduction 14, result has 88.9 percent of original size [2020-07-21 20:02:01,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:01,949 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:01,996 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:02,009 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 20:02:02,010 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:02,040 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,047 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:02,072 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,092 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,093 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 48 [2020-07-21 20:02:02,094 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:02,140 INFO L624 ElimStorePlain]: treesize reduction 20, result has 70.6 percent of original size [2020-07-21 20:02:02,143 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:02,143 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:114, output treesize:27 [2020-07-21 20:02:02,265 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,265 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-21 20:02:02,266 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:02,365 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,369 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_25|, |v_#memory_$Pointer$.offset_25|, |v_#memory_int_33|, |v_#memory_int_34|, |v_#memory_int_35|], 4=[|v_#memory_int_37|]} [2020-07-21 20:02:02,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:02,374 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:02,447 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:02,460 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:02,507 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,512 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:02,568 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,572 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:02,602 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,606 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:02,633 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 20:02:02,671 INFO L350 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2020-07-21 20:02:02,671 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 50 [2020-07-21 20:02:02,672 INFO L544 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:02,696 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,700 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 6 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:02,702 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 10 variables, input treesize:319, output treesize:41 [2020-07-21 20:02:02,821 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2020-07-21 20:02:02,822 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:02,830 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:02,832 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 20:02:02,832 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:43, output treesize:3 [2020-07-21 20:02:02,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:02:02,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:02:02,904 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_25|, |v_#memory_$Pointer$.offset_25|, |v_#memory_int_33|, |v_#memory_int_35|], 3=[|v_#memory_int_34|]} [2020-07-21 20:02:02,919 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:03,147 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-07-21 20:02:03,148 INFO L624 ElimStorePlain]: treesize reduction 154, result has 51.4 percent of original size [2020-07-21 20:02:03,155 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 20:02:03,326 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-21 20:02:03,326 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:03,332 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 20:02:03,527 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-07-21 20:02:03,528 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:03,532 INFO L544 ElimStorePlain]: Start of recursive call 5: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-07-21 20:02:03,663 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-21 20:02:03,664 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 20:02:03,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904903661] [2020-07-21 20:02:03,669 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2020-07-21 20:02:03,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:02:03,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-07-21 20:02:03,669 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-07-21 20:02:03,669 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 20:02:03,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:02:03,894 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-21 20:02:03,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:02:03 BoogieIcfgContainer [2020-07-21 20:02:03,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:02:03,896 INFO L168 Benchmark]: Toolchain (without parser) took 5544.22 ms. Allocated memory was 148.4 MB in the beginning and 244.3 MB in the end (delta: 95.9 MB). Free memory was 104.6 MB in the beginning and 204.7 MB in the end (delta: -100.2 MB). Peak memory consumption was 102.3 MB. Max. memory is 7.1 GB. [2020-07-21 20:02:03,896 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 124.6 MB in the beginning and 124.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 20:02:03,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.34 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 104.1 MB in the beginning and 172.2 MB in the end (delta: -68.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-21 20:02:03,898 INFO L168 Benchmark]: Boogie Preprocessor took 117.14 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 169.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-21 20:02:03,899 INFO L168 Benchmark]: RCFGBuilder took 713.63 ms. Allocated memory is still 205.5 MB. Free memory was 168.9 MB in the beginning and 122.2 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2020-07-21 20:02:03,900 INFO L168 Benchmark]: TraceAbstraction took 4119.48 ms. Allocated memory was 205.5 MB in the beginning and 244.3 MB in the end (delta: 38.8 MB). Free memory was 122.2 MB in the beginning and 204.7 MB in the end (delta: -82.6 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-07-21 20:02:03,903 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 148.4 MB. Free memory was 124.6 MB in the beginning and 124.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 588.34 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 104.1 MB in the beginning and 172.2 MB in the end (delta: -68.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.14 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 169.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 713.63 ms. Allocated memory is still 205.5 MB. Free memory was 168.9 MB in the beginning and 122.2 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4119.48 ms. Allocated memory was 205.5 MB in the beginning and 244.3 MB in the end (delta: 38.8 MB). Free memory was 122.2 MB in the beginning and 204.7 MB in the end (delta: -82.6 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1030]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L994] SLL* list = malloc(sizeof(SLL)); [L995] list->next = ((void*)0) [L996] list->prev = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; [L1002] COND TRUE __VERIFIER_nondet_int() [L1005] end->next = malloc(sizeof(SLL)) [L1006] EXPR end->next [L1006] end->next->prev = end [L1007] EXPR end->next [L1007] end = end->next [L1008] end->next = ((void*)0) [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1016] end->colour = RED [L1017] end->next = malloc(sizeof(SLL)) [L1018] EXPR end->next [L1018] end->next->prev = end [L1019] EXPR end->next [L1019] end = end->next [L1020] end->next = ((void*)0) [L1021] end->colour = BLACK [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list [L1029] COND FALSE !(!(((void*)0) != end)) [L1030] EXPR end->colour [L1030] COND TRUE !(BLACK == end->colour) [L1030] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 4.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 68 SDslu, 85 SDs, 0 SdLazy, 61 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 981 SizeOfPredicates, 7 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...