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-properties/list_flag-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:04:27,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:04:27,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:04:27,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:04:27,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:04:27,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:04:27,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:04:27,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:04:27,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:04:27,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:04:27,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:04:27,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:04:27,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:04:27,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:04:27,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:04:27,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:04:27,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:04:27,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:04:27,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:04:27,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:04:27,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:04:27,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:04:27,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:04:27,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:04:27,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:04:27,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:04:27,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:04:27,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:04:27,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:04:27,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:04:27,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:04:27,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:04:27,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:04:27,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:04:27,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:04:27,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:04:27,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:04:27,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:04:27,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:04:27,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:04:27,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:04:27,175 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 [2019-10-13 21:04:27,209 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:04:27,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:04:27,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:04:27,213 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:04:27,213 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:04:27,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:04:27,213 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:04:27,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:04:27,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:04:27,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:04:27,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:04:27,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:04:27,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:04:27,215 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:04:27,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:04:27,219 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:04:27,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:04:27,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:04:27,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:04:27,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:04:27,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:04:27,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:04:27,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:04:27,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:04:27,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:04:27,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:04:27,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:04:27,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:04:27,222 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 [2019-10-13 21:04:27,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:04:27,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:04:27,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:04:27,523 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:04:27,524 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:04:27,524 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-2.i [2019-10-13 21:04:27,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1468699e9/1a0fcc5aec9446559e3db5bd31d60643/FLAG2be70e827 [2019-10-13 21:04:28,151 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:04:28,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-2.i [2019-10-13 21:04:28,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1468699e9/1a0fcc5aec9446559e3db5bd31d60643/FLAG2be70e827 [2019-10-13 21:04:28,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1468699e9/1a0fcc5aec9446559e3db5bd31d60643 [2019-10-13 21:04:28,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:04:28,471 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:04:28,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:04:28,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:04:28,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:04:28,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:28" (1/1) ... [2019-10-13 21:04:28,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2c5362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:28, skipping insertion in model container [2019-10-13 21:04:28,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:04:28" (1/1) ... [2019-10-13 21:04:28,486 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:04:28,535 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:04:29,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:04:29,141 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:04:29,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:04:29,278 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:04:29,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:29 WrapperNode [2019-10-13 21:04:29,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:04:29,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:04:29,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:04:29,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:04:29,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:29" (1/1) ... [2019-10-13 21:04:29,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:29" (1/1) ... [2019-10-13 21:04:29,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:29" (1/1) ... [2019-10-13 21:04:29,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:29" (1/1) ... [2019-10-13 21:04:29,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:29" (1/1) ... [2019-10-13 21:04:29,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:29" (1/1) ... [2019-10-13 21:04:29,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:29" (1/1) ... [2019-10-13 21:04:29,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:04:29,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:04:29,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:04:29,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:04:29,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:29" (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 [2019-10-13 21:04:29,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:04:29,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:04:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 21:04:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 21:04:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-13 21:04:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-13 21:04:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-13 21:04:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 21:04:29,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:04:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:04:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:04:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 21:04:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 21:04:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 21:04:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 21:04:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 21:04:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 21:04:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 21:04:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 21:04:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 21:04:29,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 21:04:29,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 21:04:29,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 21:04:29,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 21:04:29,417 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 21:04:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 21:04:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 21:04:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 21:04:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 21:04:29,418 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-13 21:04:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-13 21:04:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-13 21:04:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 21:04:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 21:04:29,419 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 21:04:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 21:04:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 21:04:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 21:04:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 21:04:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 21:04:29,420 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 21:04:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 21:04:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 21:04:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 21:04:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 21:04:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 21:04:29,421 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 21:04:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 21:04:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 21:04:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 21:04:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 21:04:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 21:04:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 21:04:29,422 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 21:04:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 21:04:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 21:04:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 21:04:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 21:04:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 21:04:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 21:04:29,423 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 21:04:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 21:04:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 21:04:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 21:04:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 21:04:29,424 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 21:04:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:04:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:04:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 21:04:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:04:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 21:04:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 21:04:29,425 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 21:04:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 21:04:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 21:04:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 21:04:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 21:04:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 21:04:29,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:04:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 21:04:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 21:04:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 21:04:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 21:04:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 21:04:29,427 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 21:04:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 21:04:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 21:04:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 21:04:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 21:04:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 21:04:29,428 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 21:04:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 21:04:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 21:04:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 21:04:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 21:04:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 21:04:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 21:04:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 21:04:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 21:04:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 21:04:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 21:04:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 21:04:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 21:04:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 21:04:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 21:04:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 21:04:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 21:04:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 21:04:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 21:04:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 21:04:29,431 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 21:04:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 21:04:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 21:04:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 21:04:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 21:04:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 21:04:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 21:04:29,432 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 21:04:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 21:04:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:04:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:04:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:04:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:04:29,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:04:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:04:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:04:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:04:29,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:04:29,782 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 21:04:29,959 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:04:29,959 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:04:29,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:29 BoogieIcfgContainer [2019-10-13 21:04:29,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:04:29,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:04:29,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:04:29,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:04:29,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:04:28" (1/3) ... [2019-10-13 21:04:29,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36814a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:29, skipping insertion in model container [2019-10-13 21:04:29,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:04:29" (2/3) ... [2019-10-13 21:04:29,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36814a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:04:29, skipping insertion in model container [2019-10-13 21:04:29,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:04:29" (3/3) ... [2019-10-13 21:04:29,969 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2019-10-13 21:04:29,979 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:04:29,987 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:04:29,998 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:04:30,022 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:04:30,023 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:04:30,023 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:04:30,023 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:04:30,023 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:04:30,023 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:04:30,024 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:04:30,024 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:04:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-13 21:04:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 21:04:30,048 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:30,049 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:30,050 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:30,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:30,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1184417696, now seen corresponding path program 1 times [2019-10-13 21:04:30,065 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:30,066 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586172537] [2019-10-13 21:04:30,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:30,066 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:30,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:30,203 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586172537] [2019-10-13 21:04:30,203 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:30,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:04:30,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486856169] [2019-10-13 21:04:30,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:04:30,211 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:30,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:04:30,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:04:30,229 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-10-13 21:04:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:30,251 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2019-10-13 21:04:30,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:04:30,253 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-13 21:04:30,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:30,262 INFO L225 Difference]: With dead ends: 46 [2019-10-13 21:04:30,263 INFO L226 Difference]: Without dead ends: 24 [2019-10-13 21:04:30,266 INFO L600 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 [2019-10-13 21:04:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-13 21:04:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-13 21:04:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-13 21:04:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-13 21:04:30,306 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2019-10-13 21:04:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:30,307 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-13 21:04:30,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:04:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-13 21:04:30,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:04:30,308 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:30,308 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:30,309 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:30,309 INFO L82 PathProgramCache]: Analyzing trace with hash -218242506, now seen corresponding path program 1 times [2019-10-13 21:04:30,310 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:30,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479620181] [2019-10-13 21:04:30,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:30,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:30,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:30,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479620181] [2019-10-13 21:04:30,465 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:30,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:04:30,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427687276] [2019-10-13 21:04:30,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:04:30,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:30,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:04:30,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:04:30,468 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 5 states. [2019-10-13 21:04:30,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:30,622 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2019-10-13 21:04:30,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:04:30,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-10-13 21:04:30,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:30,624 INFO L225 Difference]: With dead ends: 48 [2019-10-13 21:04:30,624 INFO L226 Difference]: Without dead ends: 44 [2019-10-13 21:04:30,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:04:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-13 21:04:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2019-10-13 21:04:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-13 21:04:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-10-13 21:04:30,643 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 17 [2019-10-13 21:04:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:30,643 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-10-13 21:04:30,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:04:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-10-13 21:04:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 21:04:30,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:30,646 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:30,646 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:30,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:30,647 INFO L82 PathProgramCache]: Analyzing trace with hash 771025649, now seen corresponding path program 1 times [2019-10-13 21:04:30,647 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:30,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373733960] [2019-10-13 21:04:30,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:30,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:30,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:30,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373733960] [2019-10-13 21:04:30,749 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:30,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:04:30,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182438712] [2019-10-13 21:04:30,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:04:30,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:30,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:04:30,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:04:30,751 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2019-10-13 21:04:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:30,845 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2019-10-13 21:04:30,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:04:30,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-13 21:04:30,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:30,847 INFO L225 Difference]: With dead ends: 50 [2019-10-13 21:04:30,847 INFO L226 Difference]: Without dead ends: 42 [2019-10-13 21:04:30,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:04:30,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-13 21:04:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2019-10-13 21:04:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-13 21:04:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-13 21:04:30,856 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2019-10-13 21:04:30,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:30,856 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-13 21:04:30,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:04:30,856 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-13 21:04:30,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 21:04:30,857 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:30,857 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:30,858 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:30,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:30,858 INFO L82 PathProgramCache]: Analyzing trace with hash -472715872, now seen corresponding path program 1 times [2019-10-13 21:04:30,858 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:30,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839003309] [2019-10-13 21:04:30,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:30,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:30,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:30,926 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839003309] [2019-10-13 21:04:30,926 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:30,926 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:04:30,927 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782170608] [2019-10-13 21:04:30,927 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:04:30,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:30,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:04:30,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:04:30,928 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-10-13 21:04:31,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:31,043 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2019-10-13 21:04:31,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:04:31,044 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-13 21:04:31,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:31,045 INFO L225 Difference]: With dead ends: 48 [2019-10-13 21:04:31,045 INFO L226 Difference]: Without dead ends: 38 [2019-10-13 21:04:31,047 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:04:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-13 21:04:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2019-10-13 21:04:31,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 21:04:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-10-13 21:04:31,055 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2019-10-13 21:04:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:31,056 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-10-13 21:04:31,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:04:31,056 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-10-13 21:04:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 21:04:31,057 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:31,057 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:31,058 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:31,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:31,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1962636917, now seen corresponding path program 1 times [2019-10-13 21:04:31,058 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:31,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242924686] [2019-10-13 21:04:31,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:31,059 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:31,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:31,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242924686] [2019-10-13 21:04:31,161 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:31,161 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:04:31,161 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172254612] [2019-10-13 21:04:31,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:04:31,162 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:31,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:04:31,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:04:31,163 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states. [2019-10-13 21:04:31,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:31,182 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2019-10-13 21:04:31,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:04:31,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-13 21:04:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:31,185 INFO L225 Difference]: With dead ends: 54 [2019-10-13 21:04:31,185 INFO L226 Difference]: Without dead ends: 38 [2019-10-13 21:04:31,188 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:04:31,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-13 21:04:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2019-10-13 21:04:31,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-13 21:04:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-13 21:04:31,200 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 23 [2019-10-13 21:04:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:31,201 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-13 21:04:31,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:04:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-13 21:04:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 21:04:31,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:31,202 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:31,202 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:31,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:31,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1888593434, now seen corresponding path program 1 times [2019-10-13 21:04:31,204 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:31,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348944295] [2019-10-13 21:04:31,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:31,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:31,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:31,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348944295] [2019-10-13 21:04:31,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146508095] [2019-10-13 21:04:31,380 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 [2019-10-13 21:04:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:31,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-13 21:04:31,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:04:31,579 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-13 21:04:31,579 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,583 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:04:31,583 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,584 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-10-13 21:04:31,615 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-13 21:04:31,616 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,625 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:04:31,626 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,626 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-10-13 21:04:31,650 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:04:31,650 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-13 21:04:31,652 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,666 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:04:31,667 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,667 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-10-13 21:04:31,696 INFO L341 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2019-10-13 21:04:31,697 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2019-10-13 21:04:31,698 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,705 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:04:31,706 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,706 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:12 [2019-10-13 21:04:31,734 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-10-13 21:04:31,736 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,743 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:04:31,744 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-13 21:04:31,745 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2019-10-13 21:04:31,780 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-10-13 21:04:31,780 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,791 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:04:31,792 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,792 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2019-10-13 21:04:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:31,815 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:04:31,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:04:31,862 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-13 21:04:31,865 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:04:31,872 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:04:31,873 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-10-13 21:04:31,874 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:54, output treesize:22 [2019-10-13 21:04:31,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:04:31,988 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2019-10-13 21:04:31,989 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:04:32,043 INFO L567 ElimStorePlain]: treesize reduction 32, result has 50.8 percent of original size [2019-10-13 21:04:32,045 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2019-10-13 21:04:32,045 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:21 [2019-10-13 21:04:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:04:32,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [954448217] [2019-10-13 21:04:32,186 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 24 [2019-10-13 21:04:32,244 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 21:04:32,245 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 21:04:32,315 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 21:04:32,317 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 33 variables. [2019-10-13 21:04:32,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:32,321 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 21:04:32,356 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 21:04:32,356 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 21:04:32,357 INFO L553 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-10-13 21:04:32,358 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 21:04:32,358 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 21:04:32,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9, 9, 9] total 15 [2019-10-13 21:04:32,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146384493] [2019-10-13 21:04:32,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:04:32,360 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:32,360 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 21:04:32,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:04:32,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:04:32,361 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 2 states. [2019-10-13 21:04:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:32,363 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-10-13 21:04:32,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:04:32,363 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-10-13 21:04:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:32,364 INFO L225 Difference]: With dead ends: 34 [2019-10-13 21:04:32,364 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:04:32,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:04:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:04:32,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:04:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:04:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:04:32,365 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-10-13 21:04:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:32,366 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:04:32,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:04:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:04:32,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:04:32,570 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:04:32,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:04:32,623 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:04:32,624 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:04:32,624 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:04:32,624 INFO L446 ceAbstractionStarter]: At program point myexitENTRY(lines 513 515) the Hoare annotation is: true [2019-10-13 21:04:32,624 INFO L443 ceAbstractionStarter]: For program point myexitEXIT(lines 513 515) no Hoare annotation was computed. [2019-10-13 21:04:32,624 INFO L446 ceAbstractionStarter]: At program point L514(line 514) the Hoare annotation is: true [2019-10-13 21:04:32,625 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 161 165) no Hoare annotation was computed. [2019-10-13 21:04:32,625 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 161 165) no Hoare annotation was computed. [2019-10-13 21:04:32,625 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 161 165) no Hoare annotation was computed. [2019-10-13 21:04:32,625 INFO L443 ceAbstractionStarter]: For program point __uint64_identityFINAL(lines 181 185) no Hoare annotation was computed. [2019-10-13 21:04:32,625 INFO L443 ceAbstractionStarter]: For program point __uint64_identityENTRY(lines 181 185) no Hoare annotation was computed. [2019-10-13 21:04:32,625 INFO L443 ceAbstractionStarter]: For program point __uint64_identityEXIT(lines 181 185) no Hoare annotation was computed. [2019-10-13 21:04:32,625 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 166 170) no Hoare annotation was computed. [2019-10-13 21:04:32,625 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 166 170) no Hoare annotation was computed. [2019-10-13 21:04:32,625 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 166 170) no Hoare annotation was computed. [2019-10-13 21:04:32,625 INFO L443 ceAbstractionStarter]: For program point __uint16_identityENTRY(lines 171 175) no Hoare annotation was computed. [2019-10-13 21:04:32,626 INFO L443 ceAbstractionStarter]: For program point __uint16_identityEXIT(lines 171 175) no Hoare annotation was computed. [2019-10-13 21:04:32,626 INFO L443 ceAbstractionStarter]: For program point __uint16_identityFINAL(lines 171 175) no Hoare annotation was computed. [2019-10-13 21:04:32,626 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:04:32,626 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:04:32,626 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:04:32,626 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:04:32,626 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 546) no Hoare annotation was computed. [2019-10-13 21:04:32,626 INFO L443 ceAbstractionStarter]: For program point L543-1(lines 543 544) no Hoare annotation was computed. [2019-10-13 21:04:32,626 INFO L439 ceAbstractionStarter]: At program point L543-3(lines 543 544) the Hoare annotation is: (and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset) (= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))) [2019-10-13 21:04:32,626 INFO L443 ceAbstractionStarter]: For program point L539(lines 539 544) no Hoare annotation was computed. [2019-10-13 21:04:32,627 INFO L443 ceAbstractionStarter]: For program point L543-4(lines 539 544) no Hoare annotation was computed. [2019-10-13 21:04:32,627 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 520 547) no Hoare annotation was computed. [2019-10-13 21:04:32,627 INFO L443 ceAbstractionStarter]: For program point L527(lines 527 531) no Hoare annotation was computed. [2019-10-13 21:04:32,627 INFO L443 ceAbstractionStarter]: For program point L527-2(lines 527 531) no Hoare annotation was computed. [2019-10-13 21:04:32,627 INFO L443 ceAbstractionStarter]: For program point L540-1(lines 540 541) no Hoare annotation was computed. [2019-10-13 21:04:32,627 INFO L439 ceAbstractionStarter]: At program point L540-3(lines 540 541) the Hoare annotation is: (and (= main_~a~0.base main_~p~0.base) (= main_~a~0.offset main_~p~0.offset) (= 3 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))) [2019-10-13 21:04:32,627 INFO L443 ceAbstractionStarter]: For program point L524(line 524) no Hoare annotation was computed. [2019-10-13 21:04:32,627 INFO L446 ceAbstractionStarter]: At program point L524-1(line 524) the Hoare annotation is: true [2019-10-13 21:04:32,627 INFO L443 ceAbstractionStarter]: For program point L524-3(line 524) no Hoare annotation was computed. [2019-10-13 21:04:32,627 INFO L443 ceAbstractionStarter]: For program point L545(lines 545 546) no Hoare annotation was computed. [2019-10-13 21:04:32,628 INFO L443 ceAbstractionStarter]: For program point L545-2(lines 520 547) no Hoare annotation was computed. [2019-10-13 21:04:32,628 INFO L443 ceAbstractionStarter]: For program point L533(line 533) no Hoare annotation was computed. [2019-10-13 21:04:32,628 INFO L446 ceAbstractionStarter]: At program point L533-1(line 533) the Hoare annotation is: true [2019-10-13 21:04:32,628 INFO L443 ceAbstractionStarter]: For program point L533-3(line 533) no Hoare annotation was computed. [2019-10-13 21:04:32,628 INFO L443 ceAbstractionStarter]: For program point L546(line 546) no Hoare annotation was computed. [2019-10-13 21:04:32,628 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 520 547) the Hoare annotation is: true [2019-10-13 21:04:32,628 INFO L443 ceAbstractionStarter]: For program point L526-1(lines 526 536) no Hoare annotation was computed. [2019-10-13 21:04:32,628 INFO L439 ceAbstractionStarter]: At program point L526-3(lines 526 536) the Hoare annotation is: false [2019-10-13 21:04:32,628 INFO L443 ceAbstractionStarter]: For program point L526-4(lines 526 536) no Hoare annotation was computed. [2019-10-13 21:04:32,628 INFO L443 ceAbstractionStarter]: For program point __uint32_identityFINAL(lines 176 180) no Hoare annotation was computed. [2019-10-13 21:04:32,629 INFO L443 ceAbstractionStarter]: For program point __uint32_identityENTRY(lines 176 180) no Hoare annotation was computed. [2019-10-13 21:04:32,629 INFO L443 ceAbstractionStarter]: For program point __uint32_identityEXIT(lines 176 180) no Hoare annotation was computed. [2019-10-13 21:04:32,637 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:04:32,638 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:04:32,639 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:04:32,639 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:04:32,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:04:32 BoogieIcfgContainer [2019-10-13 21:04:32,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:04:32,644 INFO L168 Benchmark]: Toolchain (without parser) took 4172.40 ms. Allocated memory was 146.8 MB in the beginning and 245.9 MB in the end (delta: 99.1 MB). Free memory was 101.9 MB in the beginning and 160.7 MB in the end (delta: -58.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:32,645 INFO L168 Benchmark]: CDTParser took 1.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:04:32,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 807.01 ms. Allocated memory was 146.8 MB in the beginning and 206.0 MB in the end (delta: 59.2 MB). Free memory was 101.7 MB in the beginning and 170.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:32,646 INFO L168 Benchmark]: Boogie Preprocessor took 65.78 ms. Allocated memory is still 206.0 MB. Free memory was 170.9 MB in the beginning and 168.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:32,647 INFO L168 Benchmark]: RCFGBuilder took 615.74 ms. Allocated memory is still 206.0 MB. Free memory was 168.4 MB in the beginning and 125.5 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:32,648 INFO L168 Benchmark]: TraceAbstraction took 2679.69 ms. Allocated memory was 206.0 MB in the beginning and 245.9 MB in the end (delta: 39.8 MB). Free memory was 124.9 MB in the beginning and 160.7 MB in the end (delta: -35.8 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:04:32,654 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 807.01 ms. Allocated memory was 146.8 MB in the beginning and 206.0 MB in the end (delta: 59.2 MB). Free memory was 101.7 MB in the beginning and 170.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.78 ms. Allocated memory is still 206.0 MB. Free memory was 170.9 MB in the beginning and 168.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 615.74 ms. Allocated memory is still 206.0 MB. Free memory was 168.4 MB in the beginning and 125.5 MB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2679.69 ms. Allocated memory was 206.0 MB in the beginning and 245.9 MB in the end (delta: 39.8 MB). Free memory was 124.9 MB in the beginning and 160.7 MB in the end (delta: -35.8 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 546]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 526]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 514]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 543]: Loop Invariant [2019-10-13 21:04:32,662 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:04:32,663 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (a == p && a == p) && 3 == unknown-#memory_int-unknown[p][p] - InvariantResult [Line: 540]: Loop Invariant [2019-10-13 21:04:32,663 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-10-13 21:04:32,664 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (a == p && a == p) && 3 == unknown-#memory_int-unknown[p][p] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 71 SDslu, 179 SDs, 0 SdLazy, 132 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 13 PreInvPairs, 15 NumberOfFragments, 37 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 154 ConstructedInterpolants, 8 QuantifiedInterpolants, 16640 SizeOfPredicates, 14 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 6/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 136, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.8977272727272727, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9545454545454546, AVG_WEAKENED_CONJUNCTS: 0.2727272727272727, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...