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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/heap-data/calendar.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:57:12,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:57:12,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:57:12,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:57:12,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:57:12,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:57:12,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:57:12,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:57:12,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:57:12,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:57:12,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:57:12,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:57:12,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:57:12,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:57:12,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:57:12,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:57:12,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:57:12,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:57:12,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:57:12,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:57:12,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:57:12,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:57:12,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:57:12,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:57:12,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:57:12,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:57:12,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:57:12,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:57:12,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:57:12,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:57:12,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:57:12,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:57:12,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:57:12,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:57:12,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:57:12,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:57:12,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:57:12,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:57:12,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:57:12,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:57:12,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:57:12,320 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 21:57:12,349 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:57:12,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:57:12,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:57:12,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:57:12,352 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:57:12,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:57:12,352 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:57:12,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:57:12,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:57:12,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:57:12,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:57:12,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:57:12,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:57:12,355 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:57:12,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:57:12,355 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:57:12,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:57:12,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:57:12,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:57:12,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:57:12,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:57:12,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:57:12,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:57:12,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:57:12,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:57:12,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:57:12,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:57:12,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:57:12,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:57:12,634 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:57:12,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:57:12,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:57:12,652 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:57:12,652 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:57:12,653 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/calendar.i [2019-10-13 21:57:12,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073538bf8/69417c134a9241a98c4509e17477ae05/FLAG96e86685e [2019-10-13 21:57:13,292 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:57:13,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/calendar.i [2019-10-13 21:57:13,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073538bf8/69417c134a9241a98c4509e17477ae05/FLAG96e86685e [2019-10-13 21:57:13,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073538bf8/69417c134a9241a98c4509e17477ae05 [2019-10-13 21:57:13,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:57:13,603 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:57:13,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:57:13,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:57:13,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:57:13,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:57:13" (1/1) ... [2019-10-13 21:57:13,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530aa3f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:13, skipping insertion in model container [2019-10-13 21:57:13,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:57:13" (1/1) ... [2019-10-13 21:57:13,619 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:57:13,665 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:57:14,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:57:14,145 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:57:14,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:57:14,249 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:57:14,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:14 WrapperNode [2019-10-13 21:57:14,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:57:14,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:57:14,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:57:14,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:57:14,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:14" (1/1) ... [2019-10-13 21:57:14,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:14" (1/1) ... [2019-10-13 21:57:14,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:14" (1/1) ... [2019-10-13 21:57:14,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:14" (1/1) ... [2019-10-13 21:57:14,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:14" (1/1) ... [2019-10-13 21:57:14,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:14" (1/1) ... [2019-10-13 21:57:14,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:14" (1/1) ... [2019-10-13 21:57:14,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:57:14,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:57:14,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:57:14,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:57:14,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:14" (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 21:57:14,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:57:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:57:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 21:57:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 21:57:14,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:57:14,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:57:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:57:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 21:57:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 21:57:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 21:57:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 21:57:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 21:57:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 21:57:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 21:57:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 21:57:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 21:57:14,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 21:57:14,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 21:57:14,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 21:57:14,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 21:57:14,375 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 21:57:14,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 21:57:14,376 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 21:57:14,376 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 21:57:14,377 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 21:57:14,378 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 21:57:14,378 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 21:57:14,378 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 21:57:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 21:57:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 21:57:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 21:57:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 21:57:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 21:57:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 21:57:14,380 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 21:57:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 21:57:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 21:57:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 21:57:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 21:57:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 21:57:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 21:57:14,381 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 21:57:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 21:57:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 21:57:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 21:57:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 21:57:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 21:57:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 21:57:14,382 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 21:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 21:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 21:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 21:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 21:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 21:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 21:57:14,383 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 21:57:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 21:57:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 21:57:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 21:57:14,384 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:57:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:57:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 21:57:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:57:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 21:57:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 21:57:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 21:57:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 21:57:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 21:57:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 21:57:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 21:57:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 21:57:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 21:57:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:57:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 21:57:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 21:57:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 21:57:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 21:57:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 21:57:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 21:57:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 21:57:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 21:57:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 21:57:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 21:57:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 21:57:14,391 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 21:57:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 21:57:14,392 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 21:57:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 21:57:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 21:57:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 21:57:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 21:57:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 21:57:14,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 21:57:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 21:57:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 21:57:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 21:57:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 21:57:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 21:57:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 21:57:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 21:57:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 21:57:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 21:57:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 21:57:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 21:57:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 21:57:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 21:57:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 21:57:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 21:57:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 21:57:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 21:57:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 21:57:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 21:57:14,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:57:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:57:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:57:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:57:14,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:57:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:57:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:57:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:57:14,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:57:15,085 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:57:15,085 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 21:57:15,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:57:15 BoogieIcfgContainer [2019-10-13 21:57:15,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:57:15,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:57:15,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:57:15,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:57:15,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:57:13" (1/3) ... [2019-10-13 21:57:15,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e7649d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:57:15, skipping insertion in model container [2019-10-13 21:57:15,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:57:14" (2/3) ... [2019-10-13 21:57:15,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e7649d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:57:15, skipping insertion in model container [2019-10-13 21:57:15,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:57:15" (3/3) ... [2019-10-13 21:57:15,095 INFO L109 eAbstractionObserver]: Analyzing ICFG calendar.i [2019-10-13 21:57:15,105 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:57:15,113 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:57:15,125 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:57:15,149 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:57:15,150 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:57:15,150 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:57:15,150 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:57:15,151 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:57:15,151 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:57:15,151 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:57:15,151 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:57:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-13 21:57:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 21:57:15,175 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:57:15,176 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:57:15,178 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:57:15,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:57:15,184 INFO L82 PathProgramCache]: Analyzing trace with hash -716872195, now seen corresponding path program 1 times [2019-10-13 21:57:15,193 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:57:15,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907742021] [2019-10-13 21:57:15,194 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:15,194 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:15,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:57:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:57:15,322 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 21:57:15,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907742021] [2019-10-13 21:57:15,324 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:57:15,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:57:15,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364212882] [2019-10-13 21:57:15,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:57:15,330 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:57:15,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:57:15,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:57:15,346 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-13 21:57:15,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:57:15,365 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2019-10-13 21:57:15,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:57:15,366 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-13 21:57:15,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:57:15,375 INFO L225 Difference]: With dead ends: 28 [2019-10-13 21:57:15,376 INFO L226 Difference]: Without dead ends: 16 [2019-10-13 21:57:15,379 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 21:57:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-13 21:57:15,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-13 21:57:15,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-13 21:57:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-10-13 21:57:15,415 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-10-13 21:57:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:57:15,415 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-10-13 21:57:15,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:57:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-10-13 21:57:15,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 21:57:15,416 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:57:15,417 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:57:15,417 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:57:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:57:15,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1133366258, now seen corresponding path program 1 times [2019-10-13 21:57:15,418 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:57:15,418 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936157185] [2019-10-13 21:57:15,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:15,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:15,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:57:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:57:15,572 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 21:57:15,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936157185] [2019-10-13 21:57:15,573 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:57:15,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:57:15,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556102672] [2019-10-13 21:57:15,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:57:15,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:57:15,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:57:15,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:57:15,576 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-10-13 21:57:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:57:15,647 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2019-10-13 21:57:15,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:57:15,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-13 21:57:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:57:15,648 INFO L225 Difference]: With dead ends: 28 [2019-10-13 21:57:15,648 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:57:15,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:57:15,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:57:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 21:57:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 21:57:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2019-10-13 21:57:15,655 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 12 [2019-10-13 21:57:15,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:57:15,656 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2019-10-13 21:57:15,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:57:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2019-10-13 21:57:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:57:15,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:57:15,657 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:57:15,657 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:57:15,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:57:15,658 INFO L82 PathProgramCache]: Analyzing trace with hash 306471032, now seen corresponding path program 1 times [2019-10-13 21:57:15,658 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:57:15,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17078722] [2019-10-13 21:57:15,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:15,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:15,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:57:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:57:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:57:15,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17078722] [2019-10-13 21:57:15,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:57:15,923 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:57:15,923 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114130931] [2019-10-13 21:57:15,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:57:15,923 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:57:15,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:57:15,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:57:15,924 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand 5 states. [2019-10-13 21:57:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:57:16,094 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2019-10-13 21:57:16,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:57:16,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-10-13 21:57:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:57:16,096 INFO L225 Difference]: With dead ends: 26 [2019-10-13 21:57:16,096 INFO L226 Difference]: Without dead ends: 24 [2019-10-13 21:57:16,098 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:57:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-13 21:57:16,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-10-13 21:57:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 21:57:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-10-13 21:57:16,105 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 17 [2019-10-13 21:57:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:57:16,105 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-10-13 21:57:16,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:57:16,105 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2019-10-13 21:57:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 21:57:16,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:57:16,106 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:57:16,107 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:57:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:57:16,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1018023612, now seen corresponding path program 1 times [2019-10-13 21:57:16,107 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:57:16,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558196477] [2019-10-13 21:57:16,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:16,108 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:57:16,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:57:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:57:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:57:16,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558196477] [2019-10-13 21:57:16,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389053636] [2019-10-13 21:57:16,225 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 21:57:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:57:16,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-13 21:57:16,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:57:16,434 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 21:57:16,434 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:16,442 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:16,446 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 21:57:16,447 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:16,452 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:16,453 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:57:16,453 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2019-10-13 21:57:16,470 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 15 treesize of output 7 [2019-10-13 21:57:16,470 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:16,478 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:16,482 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 15 treesize of output 7 [2019-10-13 21:57:16,483 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-13 21:57:16,491 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 21:57:16,491 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 21:57:16,491 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-10-13 21:57:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:57:16,498 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:57:16,520 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:57:16,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1658937020] [2019-10-13 21:57:16,580 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-13 21:57:16,580 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:57:16,587 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:57:16,604 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:57:16,605 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:57:16,760 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-13 21:57:21,237 WARN L191 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2019-10-13 21:57:40,079 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 386 [2019-10-13 21:58:00,839 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 395