/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/list-simple/sll2c_update_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:32:10,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:32:10,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:32:10,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:32:10,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:32:10,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:32:10,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:32:10,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:32:10,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:32:10,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:32:10,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:32:10,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:32:10,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:32:10,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:32:10,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:32:10,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:32:11,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:32:11,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:32:11,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:32:11,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:32:11,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:32:11,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:32:11,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:32:11,019 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:32:11,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:32:11,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:32:11,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:32:11,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:32:11,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:32:11,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:32:11,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:32:11,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:32:11,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:32:11,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:32:11,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:32:11,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:32:11,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:32:11,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:32:11,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:32:11,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:32:11,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:32:11,037 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 [2019-11-07 00:32:11,058 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:32:11,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:32:11,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:32:11,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:32:11,061 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:32:11,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:32:11,062 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:32:11,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:32:11,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:32:11,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:32:11,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:32:11,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:32:11,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:32:11,064 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:32:11,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:32:11,065 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:32:11,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:32:11,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:32:11,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:32:11,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:32:11,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:32:11,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:32:11,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:32:11,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:32:11,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:32:11,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:32:11,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:32:11,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:32:11,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:32:11,339 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:32:11,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:32:11,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:32:11,364 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:32:11,364 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:32:11,365 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_update_all.i [2019-11-07 00:32:11,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ebb946d/9a8727ff637844e8be52f0e75fd6e1d1/FLAGfd9414fda [2019-11-07 00:32:11,959 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:32:11,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_update_all.i [2019-11-07 00:32:11,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ebb946d/9a8727ff637844e8be52f0e75fd6e1d1/FLAGfd9414fda [2019-11-07 00:32:12,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21ebb946d/9a8727ff637844e8be52f0e75fd6e1d1 [2019-11-07 00:32:12,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:32:12,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:32:12,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:32:12,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:32:12,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:32:12,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:32:12" (1/1) ... [2019-11-07 00:32:12,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d77bd42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:12, skipping insertion in model container [2019-11-07 00:32:12,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:32:12" (1/1) ... [2019-11-07 00:32:12,321 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:32:12,415 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:32:12,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:32:12,913 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:32:12,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:32:13,013 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:32:13,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13 WrapperNode [2019-11-07 00:32:13,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:32:13,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:32:13,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:32:13,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:32:13,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13" (1/1) ... [2019-11-07 00:32:13,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13" (1/1) ... [2019-11-07 00:32:13,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13" (1/1) ... [2019-11-07 00:32:13,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13" (1/1) ... [2019-11-07 00:32:13,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13" (1/1) ... [2019-11-07 00:32:13,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13" (1/1) ... [2019-11-07 00:32:13,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13" (1/1) ... [2019-11-07 00:32:13,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:32:13,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:32:13,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:32:13,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:32:13,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13" (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 [2019-11-07 00:32:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:32:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:32:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 00:32:13,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 00:32:13,189 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-07 00:32:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-07 00:32:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-11-07 00:32:13,190 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-11-07 00:32:13,191 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_get_data_at [2019-11-07 00:32:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_update_at [2019-11-07 00:32:13,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:32:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:32:13,192 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 00:32:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 00:32:13,193 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 00:32:13,194 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 00:32:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 00:32:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 00:32:13,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 00:32:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 00:32:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 00:32:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 00:32:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 00:32:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 00:32:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 00:32:13,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 00:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 00:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 00:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 00:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 00:32:13,198 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 00:32:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 00:32:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 00:32:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 00:32:13,199 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 00:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 00:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 00:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 00:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 00:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 00:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 00:32:13,200 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 00:32:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 00:32:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 00:32:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 00:32:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 00:32:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 00:32:13,201 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 00:32:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 00:32:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 00:32:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 00:32:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 00:32:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 00:32:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 00:32:13,202 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 00:32:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 00:32:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 00:32:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 00:32:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 00:32:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 00:32:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 00:32:13,203 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 00:32:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 00:32:13,204 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 00:32:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:32:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:32:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 00:32:13,205 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:32:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 00:32:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 00:32:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 00:32:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 00:32:13,206 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 00:32:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 00:32:13,207 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 00:32:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 00:32:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 00:32:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:32:13,208 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 00:32:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 00:32:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 00:32:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 00:32:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 00:32:13,209 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 00:32:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 00:32:13,210 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 00:32:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 00:32:13,211 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 00:32:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 00:32:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 00:32:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 00:32:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 00:32:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 00:32:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 00:32:13,212 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 00:32:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 00:32:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 00:32:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 00:32:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 00:32:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 00:32:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 00:32:13,213 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 00:32:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 00:32:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 00:32:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 00:32:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 00:32:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 00:32:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 00:32:13,214 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 00:32:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 00:32:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 00:32:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 00:32:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 00:32:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 00:32:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 00:32:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 00:32:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 00:32:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-07 00:32:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-07 00:32:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:32:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:32:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:32:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-11-07 00:32:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-11-07 00:32:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:32:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:32:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_get_data_at [2019-11-07 00:32:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:32:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_update_at [2019-11-07 00:32:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:32:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:32:13,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:32:13,580 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-07 00:32:13,791 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:32:13,791 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-07 00:32:13,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:32:13 BoogieIcfgContainer [2019-11-07 00:32:13,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:32:13,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:32:13,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:32:13,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:32:13,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:32:12" (1/3) ... [2019-11-07 00:32:13,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523dbff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:32:13, skipping insertion in model container [2019-11-07 00:32:13,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:32:13" (2/3) ... [2019-11-07 00:32:13,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523dbff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:32:13, skipping insertion in model container [2019-11-07 00:32:13,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:32:13" (3/3) ... [2019-11-07 00:32:13,800 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_update_all.i [2019-11-07 00:32:13,809 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:32:13,818 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:32:13,830 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:32:13,854 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:32:13,854 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:32:13,854 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:32:13,854 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:32:13,854 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:32:13,854 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:32:13,855 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:32:13,855 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:32:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2019-11-07 00:32:13,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 00:32:13,881 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:32:13,882 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:32:13,884 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:32:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:13,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1158667966, now seen corresponding path program 1 times [2019-11-07 00:32:13,899 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:32:13,899 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792115348] [2019-11-07 00:32:13,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:32:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:32:14,090 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792115348] [2019-11-07 00:32:14,091 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:32:14,092 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:32:14,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99504782] [2019-11-07 00:32:14,098 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:32:14,100 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:32:14,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:32:14,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:32:14,116 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2019-11-07 00:32:14,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:32:14,144 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2019-11-07 00:32:14,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:32:14,145 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32 [2019-11-07 00:32:14,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:32:14,154 INFO L225 Difference]: With dead ends: 95 [2019-11-07 00:32:14,155 INFO L226 Difference]: Without dead ends: 43 [2019-11-07 00:32:14,159 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:32:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-07 00:32:14,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-11-07 00:32:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-07 00:32:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-11-07 00:32:14,199 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 32 [2019-11-07 00:32:14,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:32:14,202 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-11-07 00:32:14,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:32:14,202 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-11-07 00:32:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 00:32:14,204 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:32:14,204 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:32:14,205 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:32:14,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:14,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1470117915, now seen corresponding path program 1 times [2019-11-07 00:32:14,206 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:32:14,206 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888750003] [2019-11-07 00:32:14,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:32:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:14,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:32:14,380 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888750003] [2019-11-07 00:32:14,381 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:32:14,381 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:32:14,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116121518] [2019-11-07 00:32:14,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:32:14,383 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:32:14,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:32:14,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:32:14,384 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 5 states. [2019-11-07 00:32:14,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:32:14,454 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2019-11-07 00:32:14,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:32:14,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-11-07 00:32:14,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:32:14,456 INFO L225 Difference]: With dead ends: 71 [2019-11-07 00:32:14,457 INFO L226 Difference]: Without dead ends: 46 [2019-11-07 00:32:14,458 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:32:14,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-07 00:32:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-11-07 00:32:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-11-07 00:32:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2019-11-07 00:32:14,472 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 32 [2019-11-07 00:32:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:32:14,475 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2019-11-07 00:32:14,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:32:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2019-11-07 00:32:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-07 00:32:14,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:32:14,478 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:32:14,478 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:32:14,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:14,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2051310963, now seen corresponding path program 1 times [2019-11-07 00:32:14,480 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:32:14,480 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273775996] [2019-11-07 00:32:14,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:32:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:32:14,620 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273775996] [2019-11-07 00:32:14,621 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:32:14,621 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:32:14,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164345239] [2019-11-07 00:32:14,622 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:32:14,623 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:32:14,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:32:14,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:32:14,624 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 4 states. [2019-11-07 00:32:14,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:32:14,677 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2019-11-07 00:32:14,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:32:14,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2019-11-07 00:32:14,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:32:14,679 INFO L225 Difference]: With dead ends: 67 [2019-11-07 00:32:14,679 INFO L226 Difference]: Without dead ends: 54 [2019-11-07 00:32:14,680 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:32:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-11-07 00:32:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2019-11-07 00:32:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-07 00:32:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2019-11-07 00:32:14,689 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 40 [2019-11-07 00:32:14,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:32:14,689 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2019-11-07 00:32:14,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:32:14,690 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2019-11-07 00:32:14,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-07 00:32:14,691 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:32:14,691 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:32:14,692 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:32:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:14,692 INFO L82 PathProgramCache]: Analyzing trace with hash -121828803, now seen corresponding path program 1 times [2019-11-07 00:32:14,692 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:32:14,692 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290031019] [2019-11-07 00:32:14,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:32:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:14,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:32:14,829 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290031019] [2019-11-07 00:32:14,829 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181491280] [2019-11-07 00:32:14,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:32:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:32:15,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 00:32:15,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:32:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:32:15,102 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:32:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:32:15,181 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1057201881] [2019-11-07 00:32:15,188 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 49 [2019-11-07 00:32:15,232 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:32:15,233 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:32:15,317 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 00:32:15,319 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Performed 43 root evaluator evaluations with a maximum evaluation depth of 0. Performed 43 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 33 variables. [2019-11-07 00:32:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:32:15,324 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 00:32:15,371 INFO L227 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 86.04% of their original sizes. [2019-11-07 00:32:15,371 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 00:32:15,391 INFO L553 sIntCurrentIteration]: We unified 47 AI predicates to 47 [2019-11-07 00:32:15,392 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 00:32:15,392 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 00:32:15,393 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5, 5] total 12 [2019-11-07 00:32:15,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167670405] [2019-11-07 00:32:15,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:32:15,394 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:32:15,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:32:15,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:32:15,395 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 6 states. [2019-11-07 00:32:15,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:32:15,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:32:15,605 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 596#true or 951#(and (= main_~data~0 1) (= main_~len~0 2)) ([#1{main_~len~0 = [2;2]; main_~data~0 = [1;1]; }]) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:403) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1089) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:969) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-07 00:32:15,617 INFO L168 Benchmark]: Toolchain (without parser) took 3349.07 ms. Allocated memory was 146.3 MB in the beginning and 235.9 MB in the end (delta: 89.7 MB). Free memory was 101.6 MB in the beginning and 96.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:15,618 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 00:32:15,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.47 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 168.4 MB in the end (delta: -67.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:15,622 INFO L168 Benchmark]: Boogie Preprocessor took 100.96 ms. Allocated memory is still 203.9 MB. Free memory was 168.4 MB in the beginning and 165.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:15,623 INFO L168 Benchmark]: RCFGBuilder took 675.71 ms. Allocated memory is still 203.9 MB. Free memory was 165.8 MB in the beginning and 117.2 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:15,626 INFO L168 Benchmark]: TraceAbstraction took 1819.31 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 117.2 MB in the beginning and 96.0 MB in the end (delta: 21.3 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:32:15,635 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.47 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 168.4 MB in the end (delta: -67.0 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.96 ms. Allocated memory is still 203.9 MB. Free memory was 168.4 MB in the beginning and 165.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 675.71 ms. Allocated memory is still 203.9 MB. Free memory was 165.8 MB in the beginning and 117.2 MB in the end (delta: 48.6 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1819.31 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 117.2 MB in the beginning and 96.0 MB in the end (delta: 21.3 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 596#true or 951#(and (= main_~data~0 1) (= main_~len~0 2)) ([#1{main_~len~0 = [2;2]; main_~data~0 = [1;1]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 596#true or 951#(and (= main_~data~0 1) (= main_~len~0 2)) ([#1{main_~len~0 = [2;2]; main_~data~0 = [1;1]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...