/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:55:37,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:55:37,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:55:37,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:55:37,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:55:37,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:55:37,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:55:37,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:55:37,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:55:37,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:55:37,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:55:37,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:55:37,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:55:37,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:55:37,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:55:37,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:55:37,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:55:37,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:55:37,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:55:37,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:55:38,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:55:38,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:55:38,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:55:38,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:55:38,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:55:38,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:55:38,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:55:38,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:55:38,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:55:38,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:55:38,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:55:38,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:55:38,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:55:38,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:55:38,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:55:38,017 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:55:38,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:55:38,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:55:38,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:55:38,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:55:38,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:55:38,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 13:55:38,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:55:38,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:55:38,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:55:38,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:55:38,061 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:55:38,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:55:38,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:55:38,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:55:38,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:55:38,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:55:38,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:55:38,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:55:38,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:55:38,064 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:55:38,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:55:38,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:55:38,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:55:38,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:55:38,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:55:38,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:55:38,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:55:38,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:55:38,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:55:38,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:55:38,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:55:38,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:55:38,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:38,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:55:38,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:55:38,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:55:38,395 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:55:38,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:55:38,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:55:38,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:55:38,414 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:55:38,414 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-07-20 13:55:38,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc6db422/c6c942cd41fb4a219e9a764b37877830/FLAG4fddf2482 [2020-07-20 13:55:39,048 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:55:39,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-07-20 13:55:39,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc6db422/c6c942cd41fb4a219e9a764b37877830/FLAG4fddf2482 [2020-07-20 13:55:39,358 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc6db422/c6c942cd41fb4a219e9a764b37877830 [2020-07-20 13:55:39,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:55:39,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:55:39,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:55:39,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:55:39,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:55:39,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:55:39" (1/1) ... [2020-07-20 13:55:39,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567d91d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:39, skipping insertion in model container [2020-07-20 13:55:39,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:55:39" (1/1) ... [2020-07-20 13:55:39,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:55:39,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:55:40,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:55:40,026 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:55:40,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:55:40,145 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:55:40,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:40 WrapperNode [2020-07-20 13:55:40,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:55:40,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:55:40,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:55:40,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:55:40,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:40" (1/1) ... [2020-07-20 13:55:40,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:40" (1/1) ... [2020-07-20 13:55:40,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:40" (1/1) ... [2020-07-20 13:55:40,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:40" (1/1) ... [2020-07-20 13:55:40,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:40" (1/1) ... [2020-07-20 13:55:40,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:40" (1/1) ... [2020-07-20 13:55:40,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:40" (1/1) ... [2020-07-20 13:55:40,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:55:40,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:55:40,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:55:40,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:55:40,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:55:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:55:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:55:40,291 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:55:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 13:55:40,291 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 13:55:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 13:55:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 13:55:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 13:55:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 13:55:40,292 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 13:55:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 13:55:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 13:55:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 13:55:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 13:55:40,293 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 13:55:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 13:55:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 13:55:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 13:55:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 13:55:40,294 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 13:55:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 13:55:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 13:55:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 13:55:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 13:55:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 13:55:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 13:55:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 13:55:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 13:55:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 13:55:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 13:55:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 13:55:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 13:55:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 13:55:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 13:55:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 13:55:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 13:55:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 13:55:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 13:55:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 13:55:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 13:55:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 13:55:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 13:55:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 13:55:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 13:55:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 13:55:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 13:55:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 13:55:40,299 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 13:55:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 13:55:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 13:55:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 13:55:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 13:55:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 13:55:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:55:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 13:55:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 13:55:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:55:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 13:55:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 13:55:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 13:55:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 13:55:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 13:55:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 13:55:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 13:55:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 13:55:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 13:55:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 13:55:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 13:55:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 13:55:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 13:55:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 13:55:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 13:55:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 13:55:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 13:55:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 13:55:40,303 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 13:55:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 13:55:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 13:55:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 13:55:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 13:55:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 13:55:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 13:55:40,304 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 13:55:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 13:55:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 13:55:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 13:55:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 13:55:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 13:55:40,305 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 13:55:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 13:55:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 13:55:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 13:55:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 13:55:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 13:55:40,306 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 13:55:40,307 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 13:55:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:55:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:55:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:55:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:55:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:55:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:55:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:55:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:55:40,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:55:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:55:40,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:55:40,924 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:55:40,924 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-20 13:55:40,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:55:40 BoogieIcfgContainer [2020-07-20 13:55:40,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:55:40,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:55:40,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:55:40,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:55:40,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:55:39" (1/3) ... [2020-07-20 13:55:40,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3809a5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:55:40, skipping insertion in model container [2020-07-20 13:55:40,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:55:40" (2/3) ... [2020-07-20 13:55:40,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3809a5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:55:40, skipping insertion in model container [2020-07-20 13:55:40,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:55:40" (3/3) ... [2020-07-20 13:55:40,937 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-07-20 13:55:40,948 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:55:40,957 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-20 13:55:40,969 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-20 13:55:40,991 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:55:40,991 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:55:40,991 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:55:40,991 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:55:40,991 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:55:40,991 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:55:40,992 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:55:40,992 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:55:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-20 13:55:41,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 13:55:41,014 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:41,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:41,015 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:41,022 INFO L82 PathProgramCache]: Analyzing trace with hash -810798801, now seen corresponding path program 1 times [2020-07-20 13:55:41,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:41,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723482723] [2020-07-20 13:55:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:41,219 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:41,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:41,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 13:55:41,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:41,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:55:41,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723482723] [2020-07-20 13:55:41,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:55:41,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:55:41,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634017798] [2020-07-20 13:55:41,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:55:41,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:41,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:55:41,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:55:41,309 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-07-20 13:55:41,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:55:41,433 INFO L93 Difference]: Finished difference Result 67 states and 107 transitions. [2020-07-20 13:55:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:55:41,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-20 13:55:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:55:41,445 INFO L225 Difference]: With dead ends: 67 [2020-07-20 13:55:41,446 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 13:55:41,450 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 [2020-07-20 13:55:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 13:55:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-07-20 13:55:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 13:55:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-07-20 13:55:41,494 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 10 [2020-07-20 13:55:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:55:41,494 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-07-20 13:55:41,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:55:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-07-20 13:55:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 13:55:41,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:41,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:41,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:41,710 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:41,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:41,711 INFO L82 PathProgramCache]: Analyzing trace with hash 59124385, now seen corresponding path program 1 times [2020-07-20 13:55:41,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:41,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552024060] [2020-07-20 13:55:41,712 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:41,813 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:41,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:41,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 13:55:41,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:41,869 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 13:55:41,869 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:41,877 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:41,878 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:41,878 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-20 13:55:41,904 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 [2020-07-20 13:55:41,905 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:41,907 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:41,908 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:41,908 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 13:55:41,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:41,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:55:41,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552024060] [2020-07-20 13:55:41,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:55:41,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:55:41,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609462266] [2020-07-20 13:55:41,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:55:41,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:55:41,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:55:41,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:55:41,921 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-07-20 13:55:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:55:42,084 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-20 13:55:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:55:42,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 13:55:42,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:55:42,086 INFO L225 Difference]: With dead ends: 51 [2020-07-20 13:55:42,086 INFO L226 Difference]: Without dead ends: 49 [2020-07-20 13:55:42,087 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 [2020-07-20 13:55:42,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-20 13:55:42,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2020-07-20 13:55:42,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 13:55:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-20 13:55:42,096 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2020-07-20 13:55:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:55:42,097 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-20 13:55:42,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:55:42,097 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-20 13:55:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 13:55:42,098 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:55:42,098 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:55:42,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:42,313 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:55:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:55:42,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1951969173, now seen corresponding path program 1 times [2020-07-20 13:55:42,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:55:42,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571258040] [2020-07-20 13:55:42,315 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-20 13:55:42,694 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:55:42,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:55:42,697 WARN L261 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-20 13:55:42,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:55:42,720 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-20 13:55:42,721 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:42,732 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:42,749 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-20 13:55:42,750 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:42,766 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:42,767 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:42,768 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2020-07-20 13:55:42,865 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:42,866 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-20 13:55:42,868 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,084 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-07-20 13:55:43,086 INFO L624 ElimStorePlain]: treesize reduction 14, result has 90.7 percent of original size [2020-07-20 13:55:43,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:43,116 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,189 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:43,217 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,270 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:43,282 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 13:55:43,283 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,309 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,316 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:43,338 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,349 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2020-07-20 13:55:43,350 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,370 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,372 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,372 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:139, output treesize:30 [2020-07-20 13:55:43,454 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,455 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-20 13:55:43,456 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,517 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,521 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_33|], 2=[|v_#memory_$Pointer$.base_25|, |v_#memory_$Pointer$.offset_25|, |v_#memory_int_34|, |v_#memory_int_35|], 4=[|v_#memory_int_37|]} [2020-07-20 13:55:43,529 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:43,580 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:43,586 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,626 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:43,630 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,654 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,657 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:43,678 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,683 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:43,705 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:55:43,714 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 48 [2020-07-20 13:55:43,715 INFO L544 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,753 INFO L624 ElimStorePlain]: treesize reduction 8, result has 86.7 percent of original size [2020-07-20 13:55:43,756 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 6 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:43,756 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 9 variables, input treesize:317, output treesize:31 [2020-07-20 13:55:43,846 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:43,847 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 29 [2020-07-20 13:55:43,848 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,873 INFO L624 ElimStorePlain]: treesize reduction 8, result has 66.7 percent of original size [2020-07-20 13:55:43,874 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:55:43,874 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:3 [2020-07-20 13:55:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:55:43,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:55:43,948 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|]} [2020-07-20 13:55:43,954 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:44,158 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-07-20 13:55:44,160 INFO L624 ElimStorePlain]: treesize reduction 154, result has 51.4 percent of original size [2020-07-20 13:55:44,171 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:55:44,349 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-07-20 13:55:44,350 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:44,356 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-20 13:55:44,492 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-07-20 13:55:44,493 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:44,499 INFO L544 ElimStorePlain]: Start of recursive call 5: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-07-20 13:55:44,617 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-20 13:55:44,618 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:55:44,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571258040] [2020-07-20 13:55:44,621 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2020-07-20 13:55:44,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:55:44,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-07-20 13:55:44,621 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-07-20 13:55:44,621 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:55:44,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:55:44,843 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-20 13:55:44,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:55:44 BoogieIcfgContainer [2020-07-20 13:55:44,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:55:44,845 INFO L168 Benchmark]: Toolchain (without parser) took 5476.70 ms. Allocated memory was 144.2 MB in the beginning and 249.0 MB in the end (delta: 104.9 MB). Free memory was 102.4 MB in the beginning and 107.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 99.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:55:44,846 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:55:44,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 776.05 ms. Allocated memory was 144.2 MB in the beginning and 204.5 MB in the end (delta: 60.3 MB). Free memory was 102.0 MB in the beginning and 171.2 MB in the end (delta: -69.2 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:55:44,847 INFO L168 Benchmark]: Boogie Preprocessor took 67.37 ms. Allocated memory is still 204.5 MB. Free memory was 171.2 MB in the beginning and 168.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:55:44,848 INFO L168 Benchmark]: RCFGBuilder took 707.66 ms. Allocated memory is still 204.5 MB. Free memory was 168.4 MB in the beginning and 121.3 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:55:44,849 INFO L168 Benchmark]: TraceAbstraction took 3913.91 ms. Allocated memory was 204.5 MB in the beginning and 249.0 MB in the end (delta: 44.6 MB). Free memory was 120.6 MB in the beginning and 107.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 57.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:55:44,853 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 776.05 ms. Allocated memory was 144.2 MB in the beginning and 204.5 MB in the end (delta: 60.3 MB). Free memory was 102.0 MB in the beginning and 171.2 MB in the end (delta: -69.2 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.37 ms. Allocated memory is still 204.5 MB. Free memory was 171.2 MB in the beginning and 168.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 707.66 ms. Allocated memory is still 204.5 MB. Free memory was 168.4 MB in the beginning and 121.3 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3913.91 ms. Allocated memory was 204.5 MB in the beginning and 249.0 MB in the end (delta: 44.6 MB). Free memory was 120.6 MB in the beginning and 107.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 57.6 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: 3.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, 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, 14 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 981 SizeOfPredicates, 7 NumberOfNonLiveVariables, 99 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...