/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:30:17,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:30:17,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:30:17,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:30:17,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:30:17,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:30:17,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:30:17,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:30:17,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:30:17,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:30:17,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:30:17,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:30:17,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:30:17,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:30:17,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:30:17,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:30:17,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:30:17,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:30:17,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:30:17,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:30:17,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:30:17,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:30:17,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:30:17,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:30:17,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 21:30:17,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 21:30:17,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 21:30:17,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 21:30:17,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 21:30:17,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 21:30:17,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:30:17,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:30:17,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:30:17,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:30:17,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:30:17,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:30:17,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:30:17,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:30:17,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:30:17,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:30:17,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:30:17,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-19 21:30:17,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:30:17,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:30:17,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:30:17,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:30:17,255 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:30:17,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:30:17,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:30:17,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:30:17,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:30:17,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:30:17,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:30:17,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:30:17,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:30:17,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:30:17,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:30:17,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:30:17,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:30:17,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:30:17,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:30:17,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:30:17,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:30:17,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:30:17,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:30:17,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:30:17,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:30:17,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:30:17,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:30:17,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:30:17,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:30:17,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:30:17,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:30:17,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:30:17,572 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:30:17,573 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:30:17,574 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:30:17,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-07-19 21:30:17,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ed2db03/dc66be2c807346a5b8817e412810bfbe/FLAGd8f78b434 [2020-07-19 21:30:18,137 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:30:18,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_search-1.i [2020-07-19 21:30:18,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ed2db03/dc66be2c807346a5b8817e412810bfbe/FLAGd8f78b434 [2020-07-19 21:30:18,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ed2db03/dc66be2c807346a5b8817e412810bfbe [2020-07-19 21:30:18,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:30:18,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:30:18,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:30:18,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:30:18,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:30:18,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:18" (1/1) ... [2020-07-19 21:30:18,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae535ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:18, skipping insertion in model container [2020-07-19 21:30:18,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:18" (1/1) ... [2020-07-19 21:30:18,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:30:18,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:30:18,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:30:18,965 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:30:19,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:30:19,092 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:30:19,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:19 WrapperNode [2020-07-19 21:30:19,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:30:19,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:30:19,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:30:19,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:30:19,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:19" (1/1) ... [2020-07-19 21:30:19,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:19" (1/1) ... [2020-07-19 21:30:19,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:19" (1/1) ... [2020-07-19 21:30:19,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:19" (1/1) ... [2020-07-19 21:30:19,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:19" (1/1) ... [2020-07-19 21:30:19,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:19" (1/1) ... [2020-07-19 21:30:19,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:19" (1/1) ... [2020-07-19 21:30:19,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:30:19,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:30:19,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:30:19,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:30:19,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:30:19,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:30:19,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:30:19,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-19 21:30:19,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-19 21:30:19,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-19 21:30:19,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-19 21:30:19,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-19 21:30:19,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-19 21:30:19,219 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-07-19 21:30:19,219 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-07-19 21:30:19,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:30:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:30:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-19 21:30:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-19 21:30:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-19 21:30:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-19 21:30:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-19 21:30:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-19 21:30:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-19 21:30:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-19 21:30:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-19 21:30:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-19 21:30:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-19 21:30:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-19 21:30:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-19 21:30:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-19 21:30:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-19 21:30:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-19 21:30:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-19 21:30:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-19 21:30:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-19 21:30:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-19 21:30:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-19 21:30:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-19 21:30:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-19 21:30:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-19 21:30:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-19 21:30:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-19 21:30:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-19 21:30:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-19 21:30:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-19 21:30:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-19 21:30:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-19 21:30:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-19 21:30:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-19 21:30:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-19 21:30:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-19 21:30:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-19 21:30:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-19 21:30:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-19 21:30:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-19 21:30:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-19 21:30:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-19 21:30:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-19 21:30:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-19 21:30:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-19 21:30:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-19 21:30:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-19 21:30:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-19 21:30:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-19 21:30:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-19 21:30:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-19 21:30:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-19 21:30:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-19 21:30:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-19 21:30:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-19 21:30:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-19 21:30:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-19 21:30:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:30:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-19 21:30:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-19 21:30:19,228 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 21:30:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-19 21:30:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-19 21:30:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-19 21:30:19,229 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-19 21:30:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 21:30:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-19 21:30:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-19 21:30:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-19 21:30:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-19 21:30:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-19 21:30:19,230 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-19 21:30:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-19 21:30:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-19 21:30:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-19 21:30:19,231 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-19 21:30:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-19 21:30:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-19 21:30:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-19 21:30:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-19 21:30:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-19 21:30:19,232 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-19 21:30:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-19 21:30:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-19 21:30:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-19 21:30:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-19 21:30:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-19 21:30:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-19 21:30:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-19 21:30:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-19 21:30:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-19 21:30:19,233 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-19 21:30:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-19 21:30:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-19 21:30:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-19 21:30:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-19 21:30:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-19 21:30:19,234 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-19 21:30:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-19 21:30:19,236 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-19 21:30:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-19 21:30:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-19 21:30:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-19 21:30:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-19 21:30:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-19 21:30:19,237 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-19 21:30:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-19 21:30:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-19 21:30:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-19 21:30:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-07-19 21:30:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:30:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 21:30:19,238 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-07-19 21:30:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 21:30:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:30:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 21:30:19,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:30:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:30:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:30:19,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:30:19,807 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:30:19,807 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-19 21:30:19,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:19 BoogieIcfgContainer [2020-07-19 21:30:19,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:30:19,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:30:19,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:30:19,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:30:19,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:30:18" (1/3) ... [2020-07-19 21:30:19,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa0921f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:19, skipping insertion in model container [2020-07-19 21:30:19,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:19" (2/3) ... [2020-07-19 21:30:19,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa0921f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:19, skipping insertion in model container [2020-07-19 21:30:19,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:19" (3/3) ... [2020-07-19 21:30:19,826 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-07-19 21:30:19,837 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:30:19,848 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:30:19,862 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:30:19,883 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:30:19,884 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:30:19,884 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:30:19,884 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:30:19,884 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:30:19,885 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:30:19,885 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:30:19,885 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:30:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-07-19 21:30:19,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 21:30:19,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:19,912 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-07-19 21:30:19,912 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:19,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:19,919 INFO L82 PathProgramCache]: Analyzing trace with hash -125905961, now seen corresponding path program 1 times [2020-07-19 21:30:19,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:19,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872278960] [2020-07-19 21:30:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc7828 [2020-07-19 21:30:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-19 21:30:20,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872278960] [2020-07-19 21:30:20,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219158635] [2020-07-19 21:30:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc7828 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 [2020-07-19 21:30:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:20,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-19 21:30:20,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:30:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-07-19 21:30:20,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 21:30:20,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2020-07-19 21:30:20,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947890112] [2020-07-19 21:30:20,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-19 21:30:20,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:20,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-19 21:30:20,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:30:20,684 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-07-19 21:30:20,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:20,710 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2020-07-19 21:30:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-19 21:30:20,711 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2020-07-19 21:30:20,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:20,721 INFO L225 Difference]: With dead ends: 58 [2020-07-19 21:30:20,722 INFO L226 Difference]: Without dead ends: 33 [2020-07-19 21:30:20,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:30:20,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-19 21:30:20,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-19 21:30:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-19 21:30:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-07-19 21:30:20,773 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 45 [2020-07-19 21:30:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:20,775 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-07-19 21:30:20,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-19 21:30:20,775 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-07-19 21:30:20,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-19 21:30:20,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:20,778 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-07-19 21:30:20,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-19 21:30:20,994 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:20,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:20,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1842115760, now seen corresponding path program 1 times [2020-07-19 21:30:20,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:20,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538822925] [2020-07-19 21:30:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc7828 [2020-07-19 21:30:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-19 21:30:21,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538822925] [2020-07-19 21:30:21,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895161695] [2020-07-19 21:30:21,189 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc7828 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:30:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:21,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-19 21:30:21,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:30:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-19 21:30:21,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:30:21,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2020-07-19 21:30:21,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790137419] [2020-07-19 21:30:21,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-19 21:30:21,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:21,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-19 21:30:21,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-19 21:30:21,373 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 8 states. [2020-07-19 21:30:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:21,724 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2020-07-19 21:30:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 21:30:21,725 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-07-19 21:30:21,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:21,727 INFO L225 Difference]: With dead ends: 73 [2020-07-19 21:30:21,727 INFO L226 Difference]: Without dead ends: 49 [2020-07-19 21:30:21,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-07-19 21:30:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-19 21:30:21,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-07-19 21:30:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-19 21:30:21,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-07-19 21:30:21,741 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 47 [2020-07-19 21:30:21,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:21,741 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-07-19 21:30:21,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-19 21:30:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-07-19 21:30:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-19 21:30:21,743 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:21,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-07-19 21:30:21,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:30:21,959 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:21,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:21,960 INFO L82 PathProgramCache]: Analyzing trace with hash 874015054, now seen corresponding path program 1 times [2020-07-19 21:30:21,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:21,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102909192] [2020-07-19 21:30:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5cc7828 [2020-07-19 21:30:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:22,081 ERROR L253 erpolLogProxyWrapper]: Interpolant 12 not inductive [2020-07-19 21:30:22,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:30:22,092 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:874) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) 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:317) 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) [2020-07-19 21:30:22,099 INFO L168 Benchmark]: Toolchain (without parser) took 3669.54 ms. Allocated memory was 141.0 MB in the beginning and 251.1 MB in the end (delta: 110.1 MB). Free memory was 99.6 MB in the beginning and 174.9 MB in the end (delta: -75.4 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-07-19 21:30:22,100 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:30:22,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.62 ms. Allocated memory was 141.0 MB in the beginning and 200.8 MB in the end (delta: 59.8 MB). Free memory was 99.2 MB in the beginning and 166.5 MB in the end (delta: -67.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:30:22,102 INFO L168 Benchmark]: Boogie Preprocessor took 62.44 ms. Allocated memory is still 200.8 MB. Free memory was 166.5 MB in the beginning and 163.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-19 21:30:22,103 INFO L168 Benchmark]: RCFGBuilder took 656.52 ms. Allocated memory is still 200.8 MB. Free memory was 163.7 MB in the beginning and 118.7 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:30:22,104 INFO L168 Benchmark]: TraceAbstraction took 2281.44 ms. Allocated memory was 200.8 MB in the beginning and 251.1 MB in the end (delta: 50.3 MB). Free memory was 118.7 MB in the beginning and 174.9 MB in the end (delta: -56.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 21:30:22,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 141.0 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.62 ms. Allocated memory was 141.0 MB in the beginning and 200.8 MB in the end (delta: 59.8 MB). Free memory was 99.2 MB in the beginning and 166.5 MB in the end (delta: -67.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.44 ms. Allocated memory is still 200.8 MB. Free memory was 166.5 MB in the beginning and 163.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 656.52 ms. Allocated memory is still 200.8 MB. Free memory was 163.7 MB in the beginning and 118.7 MB in the end (delta: 45.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2281.44 ms. Allocated memory was 200.8 MB in the beginning and 251.1 MB in the end (delta: 50.3 MB). Free memory was 118.7 MB in the beginning and 174.9 MB in the end (delta: -56.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...