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/running_example.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:59:48,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:59:48,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:59:48,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:59:48,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:59:48,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:59:48,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:59:48,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:59:48,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:59:48,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:59:48,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:59:48,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:59:48,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:59:48,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:59:48,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:59:48,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:59:48,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:59:48,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:59:48,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:59:48,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:59:48,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:59:49,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:59:49,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:59:49,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:59:49,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:59:49,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:59:49,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:59:49,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:59:49,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:59:49,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:59:49,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:59:49,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:59:49,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:59:49,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:59:49,017 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:59:49,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:59:49,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:59:49,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:59:49,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:59:49,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:59:49,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:59:49,022 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 [2019-10-15 01:59:49,054 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:59:49,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:59:49,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:59:49,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:59:49,058 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:59:49,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:59:49,059 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:59:49,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:59:49,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:59:49,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:59:49,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:59:49,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:59:49,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:59:49,060 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:59:49,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:59:49,060 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:59:49,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:59:49,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:59:49,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:59:49,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:59:49,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:59:49,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:59:49,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:59:49,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:59:49,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:59:49,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:59:49,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:59:49,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:59:49,063 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 [2019-10-15 01:59:49,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:59:49,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:59:49,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:59:49,385 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:59:49,385 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:59:49,386 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/running_example.i [2019-10-15 01:59:49,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc8f59077/5d2cc8711a834d5fa21f1b35b1fdd9d9/FLAGdebe28445 [2019-10-15 01:59:50,017 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:59:50,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-data/running_example.i [2019-10-15 01:59:50,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc8f59077/5d2cc8711a834d5fa21f1b35b1fdd9d9/FLAGdebe28445 [2019-10-15 01:59:50,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc8f59077/5d2cc8711a834d5fa21f1b35b1fdd9d9 [2019-10-15 01:59:50,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:59:50,314 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:59:50,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:50,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:59:50,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:59:50,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:50" (1/1) ... [2019-10-15 01:59:50,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d3c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50, skipping insertion in model container [2019-10-15 01:59:50,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:59:50" (1/1) ... [2019-10-15 01:59:50,330 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:59:50,384 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:59:50,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:50,835 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:59:50,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:59:50,930 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:59:50,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50 WrapperNode [2019-10-15 01:59:50,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:59:50,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:59:50,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:59:50,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:59:50,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50" (1/1) ... [2019-10-15 01:59:50,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50" (1/1) ... [2019-10-15 01:59:50,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50" (1/1) ... [2019-10-15 01:59:50,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50" (1/1) ... [2019-10-15 01:59:50,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50" (1/1) ... [2019-10-15 01:59:50,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50" (1/1) ... [2019-10-15 01:59:50,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50" (1/1) ... [2019-10-15 01:59:50,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:59:50,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:59:51,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:59:51,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:59:51,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50" (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 [2019-10-15 01:59:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:59:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:59:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 01:59:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 01:59:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:59:51,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:59:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:59:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 01:59:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 01:59:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:59:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:59:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:59:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:59:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:59:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:59:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:59:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:59:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:59:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:59:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:59:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:59:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:59:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:59:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:59:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:59:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:59:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:59:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:59:51,063 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:59:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:59:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:59:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:59:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:59:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:59:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:59:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:59:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:59:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:59:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:59:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:59:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:59:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:59:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:59:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:59:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:59:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:59:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:59:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:59:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:59:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:59:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:59:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:59:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:59:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:59:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:59:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:59:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:59:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:59:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:59:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:59:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:59:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:59:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:59:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:59:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:59:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:59:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:59:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:59:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:59:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:59:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:59:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:59:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:59:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:59:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:59:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:59:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:59:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:59:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:59:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:59:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:59:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:59:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:59:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:59:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:59:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:59:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:59:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:59:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:59:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:59:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:59:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:59:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:59:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:59:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:59:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:59:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:59:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:59:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:59:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:59:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:59:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:59:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:59:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:59:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:59:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:59:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:59:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:59:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:59:51,074 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:59:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:59:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:59:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:59:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:59:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:59:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:59:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:59:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:59:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:59:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:59:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:59:51,702 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:59:51,702 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-15 01:59:51,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:51 BoogieIcfgContainer [2019-10-15 01:59:51,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:59:51,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:59:51,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:59:51,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:59:51,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:59:50" (1/3) ... [2019-10-15 01:59:51,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729e6434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:51, skipping insertion in model container [2019-10-15 01:59:51,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:59:50" (2/3) ... [2019-10-15 01:59:51,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729e6434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:59:51, skipping insertion in model container [2019-10-15 01:59:51,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:59:51" (3/3) ... [2019-10-15 01:59:51,712 INFO L109 eAbstractionObserver]: Analyzing ICFG running_example.i [2019-10-15 01:59:51,722 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:59:51,730 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:59:51,742 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:59:51,775 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:59:51,775 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:59:51,775 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:59:51,775 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:59:51,775 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:59:51,776 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:59:51,776 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:59:51,776 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:59:51,789 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-15 01:59:51,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:59:51,795 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:51,796 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:51,798 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:51,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:51,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1694487947, now seen corresponding path program 1 times [2019-10-15 01:59:51,813 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:51,813 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831643970] [2019-10-15 01:59:51,814 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:51,814 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:51,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:51,958 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831643970] [2019-10-15 01:59:51,959 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:51,960 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:59:51,960 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499405174] [2019-10-15 01:59:51,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:59:51,966 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:51,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:59:51,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:59:51,981 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-10-15 01:59:51,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:51,998 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2019-10-15 01:59:51,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:59:51,999 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:59:51,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:52,007 INFO L225 Difference]: With dead ends: 24 [2019-10-15 01:59:52,007 INFO L226 Difference]: Without dead ends: 15 [2019-10-15 01:59:52,010 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 [2019-10-15 01:59:52,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-15 01:59:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-15 01:59:52,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-15 01:59:52,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-10-15 01:59:52,047 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2019-10-15 01:59:52,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:52,047 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-10-15 01:59:52,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:59:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2019-10-15 01:59:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-15 01:59:52,048 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:52,049 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:52,049 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:52,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:52,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1292257569, now seen corresponding path program 1 times [2019-10-15 01:59:52,050 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:52,050 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935689188] [2019-10-15 01:59:52,050 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:52,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:52,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:52,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935689188] [2019-10-15 01:59:52,167 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:59:52,167 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:59:52,168 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498311229] [2019-10-15 01:59:52,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:59:52,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:52,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:59:52,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:59:52,171 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 5 states. [2019-10-15 01:59:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:59:52,280 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-10-15 01:59:52,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:59:52,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-10-15 01:59:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:59:52,282 INFO L225 Difference]: With dead ends: 26 [2019-10-15 01:59:52,282 INFO L226 Difference]: Without dead ends: 24 [2019-10-15 01:59:52,283 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 [2019-10-15 01:59:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-15 01:59:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-10-15 01:59:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-15 01:59:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2019-10-15 01:59:52,290 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2019-10-15 01:59:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:59:52,290 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-10-15 01:59:52,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:59:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2019-10-15 01:59:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 01:59:52,291 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:59:52,292 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:59:52,292 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:59:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:59:52,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1858299310, now seen corresponding path program 1 times [2019-10-15 01:59:52,293 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:59:52,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363906255] [2019-10-15 01:59:52,293 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:52,293 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:59:52,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:59:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:52,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363906255] [2019-10-15 01:59:52,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315695455] [2019-10-15 01:59:52,534 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 [2019-10-15 01:59:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:59:52,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-15 01:59:52,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:59:52,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:52,775 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2019-10-15 01:59:52,776 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:52,800 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:52,809 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:59:52,811 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2019-10-15 01:59:52,812 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:52,825 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:52,831 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 [2019-10-15 01:59:52,831 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:52,842 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:52,842 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:52,843 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:55, output treesize:29 [2019-10-15 01:59:52,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:52,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:52,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:52,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:52,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:52,930 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 91 treesize of output 75 [2019-10-15 01:59:52,932 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,015 INFO L567 ElimStorePlain]: treesize reduction 173, result has 27.6 percent of original size [2019-10-15 01:59:53,027 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 23 treesize of output 11 [2019-10-15 01:59:53,028 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,047 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,047 INFO L464 ElimStorePlain]: Eliminatee v_prenex_9 vanished before elimination [2019-10-15 01:59:53,047 INFO L464 ElimStorePlain]: Eliminatee v_prenex_10 vanished before elimination [2019-10-15 01:59:53,048 INFO L464 ElimStorePlain]: Eliminatee v_prenex_12 vanished before elimination [2019-10-15 01:59:53,053 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 7 treesize of output 3 [2019-10-15 01:59:53,054 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,075 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,081 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 [2019-10-15 01:59:53,082 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,094 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,103 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:53,118 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,119 INFO L464 ElimStorePlain]: Eliminatee v_prenex_1 vanished before elimination [2019-10-15 01:59:53,119 INFO L464 ElimStorePlain]: Eliminatee v_prenex_2 vanished before elimination [2019-10-15 01:59:53,122 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 18 treesize of output 14 [2019-10-15 01:59:53,129 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 7 [2019-10-15 01:59:53,130 INFO L496 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,132 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,132 INFO L496 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,137 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,137 INFO L464 ElimStorePlain]: Eliminatee v_prenex_3 vanished before elimination [2019-10-15 01:59:53,137 INFO L464 ElimStorePlain]: Eliminatee v_prenex_5 vanished before elimination [2019-10-15 01:59:53,137 INFO L464 ElimStorePlain]: Eliminatee v_prenex_6 vanished before elimination [2019-10-15 01:59:53,138 INFO L464 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2019-10-15 01:59:53,138 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 15 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,138 INFO L221 ElimStorePlain]: Needed 8 recursive calls to eliminate 18 variables, input treesize:330, output treesize:7 [2019-10-15 01:59:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:53,141 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:59:53,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:53,154 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:53,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:59:53,189 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:53,197 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,379 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-10-15 01:59:53,379 INFO L567 ElimStorePlain]: treesize reduction 264, result has 39.2 percent of original size [2019-10-15 01:59:53,386 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:53,393 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,502 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-10-15 01:59:53,503 INFO L567 ElimStorePlain]: treesize reduction 14, result has 90.1 percent of original size [2019-10-15 01:59:53,510 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:53,514 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,555 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:59:53,577 INFO L496 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-15 01:59:53,588 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-10-15 01:59:53,602 INFO L567 ElimStorePlain]: treesize reduction 42, result has 37.3 percent of original size [2019-10-15 01:59:53,604 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2019-10-15 01:59:53,604 INFO L221 ElimStorePlain]: Needed 9 recursive calls to eliminate 4 variables, input treesize:463, output treesize:25 [2019-10-15 01:59:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:59:53,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [114118489] [2019-10-15 01:59:53,694 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-15 01:59:53,694 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:59:53,700 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:59:53,709 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:59:53,709 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:59:53,831 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 01:59:54,194 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:59:54,233 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:59:54,336 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:59:54,346 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:59:54,379 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 01:59:54,384 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 01:59:54,793 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 01:59:54,793 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 8] total 15 [2019-10-15 01:59:54,793 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863983387] [2019-10-15 01:59:54,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:59:54,795 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:59:54,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:59:54,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:59:54,796 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand 15 states. [2019-10-15 01:59:55,158 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2019-10-15 02:00:03,751 WARN L191 SmtUtils]: Spent 8.10 s on a formula simplification. DAG size of input: 125 DAG size of output: 69 [2019-10-15 02:00:19,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:00:19,766 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2019-10-15 02:00:19,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 02:00:19,767 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2019-10-15 02:00:19,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:00:19,770 INFO L225 Difference]: With dead ends: 51 [2019-10-15 02:00:19,770 INFO L226 Difference]: Without dead ends: 45 [2019-10-15 02:00:19,771 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=131, Invalid=514, Unknown=5, NotChecked=0, Total=650 [2019-10-15 02:00:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-15 02:00:19,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2019-10-15 02:00:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-15 02:00:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2019-10-15 02:00:19,783 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2019-10-15 02:00:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:00:19,797 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2019-10-15 02:00:19,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 02:00:19,802 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2019-10-15 02:00:19,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 02:00:19,803 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:00:19,803 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:00:20,009 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:00:20,010 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:00:20,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:00:20,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1174716709, now seen corresponding path program 1 times [2019-10-15 02:00:20,011 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:00:20,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98271665] [2019-10-15 02:00:20,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:20,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:20,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:00:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:20,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:20,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98271665] [2019-10-15 02:00:20,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556754983] [2019-10-15 02:00:20,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:00:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:20,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-15 02:00:20,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:00:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:20,491 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:00:20,963 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-10-15 02:00:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:21,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1030948980] [2019-10-15 02:00:21,001 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-15 02:00:21,001 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:00:21,002 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:00:21,002 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:00:21,002 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 02:00:21,043 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 02:00:23,030 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-15 02:00:23,037 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 02:00:23,383 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 02:00:23,383 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 9] total 20 [2019-10-15 02:00:23,383 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686090191] [2019-10-15 02:00:23,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-15 02:00:23,385 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:00:23,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-15 02:00:23,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2019-10-15 02:00:23,386 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand 20 states. [2019-10-15 02:00:23,714 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 136 [2019-10-15 02:00:23,968 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 140 [2019-10-15 02:00:24,253 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 137 [2019-10-15 02:00:24,808 WARN L191 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 161 [2019-10-15 02:00:25,123 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 138 [2019-10-15 02:00:25,744 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 165 [2019-10-15 02:00:25,997 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-10-15 02:00:26,318 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2019-10-15 02:00:26,650 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2019-10-15 02:00:27,119 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2019-10-15 02:00:27,315 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2019-10-15 02:00:27,484 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2019-10-15 02:00:28,881 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-10-15 02:00:30,900 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 54 [2019-10-15 02:00:31,235 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 55 [2019-10-15 02:00:32,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:00:32,494 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2019-10-15 02:00:32,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 02:00:32,499 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 16 [2019-10-15 02:00:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:00:32,501 INFO L225 Difference]: With dead ends: 76 [2019-10-15 02:00:32,501 INFO L226 Difference]: Without dead ends: 60 [2019-10-15 02:00:32,502 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=340, Invalid=1300, Unknown=0, NotChecked=0, Total=1640 [2019-10-15 02:00:32,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-15 02:00:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 31. [2019-10-15 02:00:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-15 02:00:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-10-15 02:00:32,523 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2019-10-15 02:00:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:00:32,523 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-10-15 02:00:32,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-15 02:00:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-10-15 02:00:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 02:00:32,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:00:32,525 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:00:32,728 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:00:32,729 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:00:32,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:00:32,729 INFO L82 PathProgramCache]: Analyzing trace with hash -587014732, now seen corresponding path program 1 times [2019-10-15 02:00:32,730 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:00:32,730 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590129523] [2019-10-15 02:00:32,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:32,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:00:32,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:00:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:00:33,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590129523] [2019-10-15 02:00:33,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950096419] [2019-10-15 02:00:33,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:00:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:00:33,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 36 conjunts are in the unsatisfiable core [2019-10-15 02:00:33,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:00:33,986 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 53 [2019-10-15 02:00:34,266 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:00:34,268 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-15 02:00:34,272 INFO L168 Benchmark]: Toolchain (without parser) took 43958.88 ms. Allocated memory was 145.2 MB in the beginning and 313.5 MB in the end (delta: 168.3 MB). Free memory was 100.9 MB in the beginning and 180.6 MB in the end (delta: -79.7 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. [2019-10-15 02:00:34,273 INFO L168 Benchmark]: CDTParser took 1.26 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 02:00:34,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.46 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.7 MB in the beginning and 169.8 MB in the end (delta: -69.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-10-15 02:00:34,274 INFO L168 Benchmark]: Boogie Preprocessor took 67.37 ms. Allocated memory is still 202.9 MB. Free memory was 169.8 MB in the beginning and 166.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-10-15 02:00:34,280 INFO L168 Benchmark]: RCFGBuilder took 704.78 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 119.7 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2019-10-15 02:00:34,281 INFO L168 Benchmark]: TraceAbstraction took 42565.89 ms. Allocated memory was 202.9 MB in the beginning and 313.5 MB in the end (delta: 110.6 MB). Free memory was 119.0 MB in the beginning and 180.6 MB in the end (delta: -61.6 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. [2019-10-15 02:00:34,284 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.46 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.7 MB in the beginning and 169.8 MB in the end (delta: -69.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.37 ms. Allocated memory is still 202.9 MB. Free memory was 169.8 MB in the beginning and 166.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 704.78 ms. Allocated memory is still 202.9 MB. Free memory was 166.9 MB in the beginning and 119.7 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42565.89 ms. Allocated memory was 202.9 MB in the beginning and 313.5 MB in the end (delta: 110.6 MB). Free memory was 119.0 MB in the beginning and 180.6 MB in the end (delta: -61.6 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...