/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --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/seq-pthread/cs_lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:48:31,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:48:31,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:48:31,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:48:31,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:48:31,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:48:31,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:48:31,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:48:31,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:48:31,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:48:31,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:48:31,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:48:31,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:48:31,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:48:31,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:48:31,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:48:31,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:48:31,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:48:31,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:48:31,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:48:31,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:48:31,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:48:31,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:48:31,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:48:31,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:48:31,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:48:31,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:48:31,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:48:31,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:48:31,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:48:31,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:48:31,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:48:31,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:48:31,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:48:31,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:48:31,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:48:31,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:48:31,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:48:31,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:48:31,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:48:31,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:48:31,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:48:32,016 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:48:32,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:48:32,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:48:32,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:48:32,018 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:48:32,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:48:32,018 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:48:32,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:48:32,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:48:32,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:48:32,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:48:32,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:48:32,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:48:32,019 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:48:32,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:48:32,020 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:48:32,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:48:32,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:48:32,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:48:32,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:48:32,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:48:32,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:48:32,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:48:32,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:48:32,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:48:32,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:48:32,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:48:32,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:48:32,022 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 [2019-11-07 04:48:32,288 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:48:32,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:48:32,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:48:32,306 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:48:32,307 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:48:32,308 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_lamport.i [2019-11-07 04:48:32,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78708e35d/ccd1d2ac81e8407097b1ad69429b8231/FLAGda728bbfd [2019-11-07 04:48:32,948 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:48:32,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_lamport.i [2019-11-07 04:48:32,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78708e35d/ccd1d2ac81e8407097b1ad69429b8231/FLAGda728bbfd [2019-11-07 04:48:33,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78708e35d/ccd1d2ac81e8407097b1ad69429b8231 [2019-11-07 04:48:33,243 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:48:33,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:48:33,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:48:33,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:48:33,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:48:33,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:48:33" (1/1) ... [2019-11-07 04:48:33,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250e170f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:33, skipping insertion in model container [2019-11-07 04:48:33,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:48:33" (1/1) ... [2019-11-07 04:48:33,267 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:48:33,325 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:48:34,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:48:34,054 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:48:34,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:48:34,275 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:48:34,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:34 WrapperNode [2019-11-07 04:48:34,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:48:34,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:48:34,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:48:34,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:48:34,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:34" (1/1) ... [2019-11-07 04:48:34,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:34" (1/1) ... [2019-11-07 04:48:34,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:34" (1/1) ... [2019-11-07 04:48:34,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:34" (1/1) ... [2019-11-07 04:48:34,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:34" (1/1) ... [2019-11-07 04:48:34,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:34" (1/1) ... [2019-11-07 04:48:34,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:34" (1/1) ... [2019-11-07 04:48:34,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:48:34,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:48:34,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:48:34,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:48:34,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:48:34,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:48:34,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:48:34,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-11-07 04:48:34,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 04:48:34,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 04:48:34,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-07 04:48:34,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-07 04:48:34,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-07 04:48:34,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:48:34,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2019-11-07 04:48:34,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2019-11-07 04:48:34,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2019-11-07 04:48:34,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2019-11-07 04:48:34,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2019-11-07 04:48:34,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2019-11-07 04:48:34,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2019-11-07 04:48:34,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2019-11-07 04:48:34,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2019-11-07 04:48:34,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2019-11-07 04:48:34,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2019-11-07 04:48:34,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2019-11-07 04:48:34,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2019-11-07 04:48:34,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-11-07 04:48:34,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-11-07 04:48:34,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2019-11-07 04:48:34,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:48:34,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:48:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 04:48:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-07 04:48:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:48:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:48:34,511 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 04:48:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 04:48:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 04:48:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 04:48:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 04:48:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 04:48:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 04:48:34,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 04:48:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 04:48:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 04:48:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 04:48:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 04:48:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 04:48:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 04:48:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 04:48:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 04:48:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 04:48:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 04:48:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-07 04:48:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-07 04:48:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-07 04:48:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 04:48:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 04:48:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 04:48:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 04:48:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 04:48:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 04:48:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 04:48:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 04:48:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 04:48:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 04:48:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 04:48:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 04:48:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 04:48:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 04:48:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 04:48:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 04:48:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 04:48:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 04:48:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 04:48:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 04:48:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 04:48:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 04:48:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 04:48:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 04:48:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 04:48:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 04:48:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 04:48:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 04:48:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 04:48:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 04:48:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 04:48:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 04:48:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 04:48:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 04:48:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:48:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 04:48:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 04:48:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:48:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 04:48:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 04:48:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 04:48:34,521 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-07 04:48:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 04:48:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 04:48:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-07 04:48:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 04:48:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:48:34,522 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-07 04:48:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 04:48:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 04:48:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 04:48:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 04:48:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 04:48:34,523 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 04:48:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 04:48:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 04:48:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 04:48:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 04:48:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 04:48:34,524 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 04:48:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 04:48:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 04:48:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 04:48:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 04:48:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 04:48:34,525 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 04:48:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 04:48:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 04:48:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 04:48:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 04:48:34,526 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 04:48:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 04:48:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 04:48:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 04:48:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 04:48:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 04:48:34,527 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 04:48:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 04:48:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 04:48:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 04:48:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 04:48:34,528 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 04:48:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 04:48:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 04:48:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 04:48:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 04:48:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:48:34,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-11-07 04:48:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-11-07 04:48:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:48:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2019-11-07 04:48:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2019-11-07 04:48:34,530 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2019-11-07 04:48:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:48:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:48:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2019-11-07 04:48:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2019-11-07 04:48:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2019-11-07 04:48:34,531 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2019-11-07 04:48:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:48:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:48:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2019-11-07 04:48:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2019-11-07 04:48:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2019-11-07 04:48:34,532 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2019-11-07 04:48:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2019-11-07 04:48:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2019-11-07 04:48:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-11-07 04:48:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-11-07 04:48:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2019-11-07 04:48:34,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:48:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:48:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:48:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:48:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-11-07 04:48:34,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:48:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 04:48:34,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:48:35,373 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !(0 != ~__CS_ret~0 % 256); [2019-11-07 04:48:35,373 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-11-07 04:48:35,374 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume !(0 != ~__CS_ret~0 % 256); [2019-11-07 04:48:35,374 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-11-07 04:48:35,374 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !(0 != ~__CS_ret~0 % 256); [2019-11-07 04:48:35,374 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-11-07 04:48:35,374 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume !(0 != ~__CS_ret~0 % 256); [2019-11-07 04:48:35,374 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-11-07 04:48:35,579 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !(0 != ~__CS_ret~0 % 256); [2019-11-07 04:48:35,580 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-11-07 04:48:35,580 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume !(0 != ~__CS_ret~0 % 256); [2019-11-07 04:48:35,580 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-11-07 04:48:35,580 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !(0 != ~__CS_ret~0 % 256); [2019-11-07 04:48:35,580 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-11-07 04:48:35,580 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume !(0 != ~__CS_ret~0 % 256); [2019-11-07 04:48:35,581 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-11-07 04:48:42,998 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:48:42,998 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-07 04:48:43,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:48:42 BoogieIcfgContainer [2019-11-07 04:48:43,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:48:43,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:48:43,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:48:43,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:48:43,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:48:33" (1/3) ... [2019-11-07 04:48:43,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae1d9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:48:43, skipping insertion in model container [2019-11-07 04:48:43,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:48:34" (2/3) ... [2019-11-07 04:48:43,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae1d9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:48:43, skipping insertion in model container [2019-11-07 04:48:43,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:48:42" (3/3) ... [2019-11-07 04:48:43,009 INFO L109 eAbstractionObserver]: Analyzing ICFG cs_lamport.i [2019-11-07 04:48:43,020 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:48:43,034 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:48:43,046 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:48:43,082 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:48:43,083 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:48:43,083 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:48:43,083 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:48:43,083 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:48:43,083 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:48:43,083 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:48:43,084 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:48:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2019-11-07 04:48:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 04:48:43,125 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:48:43,126 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:48:43,129 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:48:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:48:43,133 INFO L82 PathProgramCache]: Analyzing trace with hash 996237452, now seen corresponding path program 1 times [2019-11-07 04:48:43,141 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:48:43,141 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306585114] [2019-11-07 04:48:43,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:48:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:48:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:48:43,617 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306585114] [2019-11-07 04:48:43,618 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:48:43,619 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:48:43,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422427354] [2019-11-07 04:48:43,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:48:43,624 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:48:43,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:48:43,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:48:43,642 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 3 states. [2019-11-07 04:48:45,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:48:45,753 INFO L93 Difference]: Finished difference Result 117 states and 152 transitions. [2019-11-07 04:48:45,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:48:45,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-07 04:48:45,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:48:45,766 INFO L225 Difference]: With dead ends: 117 [2019-11-07 04:48:45,767 INFO L226 Difference]: Without dead ends: 57 [2019-11-07 04:48:45,770 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:48:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-07 04:48:45,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-11-07 04:48:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-07 04:48:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2019-11-07 04:48:45,821 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 16 [2019-11-07 04:48:45,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:48:45,822 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2019-11-07 04:48:45,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:48:45,822 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2019-11-07 04:48:45,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-07 04:48:45,824 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:48:45,824 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:48:45,825 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:48:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:48:45,825 INFO L82 PathProgramCache]: Analyzing trace with hash -243101255, now seen corresponding path program 1 times [2019-11-07 04:48:45,825 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:48:45,825 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824339820] [2019-11-07 04:48:45,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:48:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:48:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:48:46,087 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824339820] [2019-11-07 04:48:46,087 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:48:46,088 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:48:46,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457396831] [2019-11-07 04:48:46,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:48:46,090 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:48:46,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:48:46,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:48:46,090 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand 3 states. [2019-11-07 04:48:46,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:48:46,130 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2019-11-07 04:48:46,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:48:46,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-07 04:48:46,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:48:46,139 INFO L225 Difference]: With dead ends: 107 [2019-11-07 04:48:46,139 INFO L226 Difference]: Without dead ends: 57 [2019-11-07 04:48:46,141 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:48:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-11-07 04:48:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-11-07 04:48:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-07 04:48:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2019-11-07 04:48:46,160 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 18 [2019-11-07 04:48:46,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:48:46,161 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2019-11-07 04:48:46,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:48:46,161 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2019-11-07 04:48:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-07 04:48:46,162 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:48:46,163 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:48:46,163 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:48:46,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:48:46,163 INFO L82 PathProgramCache]: Analyzing trace with hash 406595133, now seen corresponding path program 1 times [2019-11-07 04:48:46,163 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:48:46,164 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628055074] [2019-11-07 04:48:46,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:48:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:48:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-07 04:48:46,463 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628055074] [2019-11-07 04:48:46,463 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:48:46,463 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:48:46,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730243537] [2019-11-07 04:48:46,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:48:46,466 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:48:46,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:48:46,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:48:46,466 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand 5 states. [2019-11-07 04:48:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:48:46,532 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2019-11-07 04:48:46,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:48:46,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-07 04:48:46,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:48:46,536 INFO L225 Difference]: With dead ends: 95 [2019-11-07 04:48:46,536 INFO L226 Difference]: Without dead ends: 88 [2019-11-07 04:48:46,537 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:48:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-07 04:48:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2019-11-07 04:48:46,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-07 04:48:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 113 transitions. [2019-11-07 04:48:46,554 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 113 transitions. Word has length 19 [2019-11-07 04:48:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:48:46,554 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 113 transitions. [2019-11-07 04:48:46,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:48:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 113 transitions. [2019-11-07 04:48:46,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-07 04:48:46,557 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:48:46,557 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:48:46,557 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:48:46,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:48:46,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1335364682, now seen corresponding path program 1 times [2019-11-07 04:48:46,558 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:48:46,558 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063536281] [2019-11-07 04:48:46,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:48:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:48:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:48:47,024 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063536281] [2019-11-07 04:48:47,025 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519207153] [2019-11-07 04:48:47,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:48:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:48:47,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:48:47,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:48:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:48:47,391 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:48:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 04:48:47,507 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1863973194] [2019-11-07 04:48:47,537 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2019-11-07 04:48:47,538 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:48:47,544 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:48:47,561 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:48:47,562 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:48:47,841 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2019-11-07 04:48:49,097 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2019-11-07 04:48:49,459 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2019-11-07 04:48:49,660 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 319 [2019-11-07 04:48:49,776 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 377 for LOIs [2019-11-07 04:48:50,425 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-11-07 04:48:50,907 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-11-07 04:48:52,000 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-11-07 04:48:58,198 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 705 [2019-11-07 04:48:58,777 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 702 [2019-11-07 04:48:59,043 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 699 [2019-11-07 04:49:00,150 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 700 [2019-11-07 04:49:00,459 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 697 [2019-11-07 04:49:04,795 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 487 [2019-11-07 04:49:04,899 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 453 [2019-11-07 04:49:05,388 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 04:49:05,754 WARN L191 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 1716