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_time_var_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:25:39,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:25:39,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:25:39,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:25:39,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:25:39,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:25:39,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:25:39,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:25:39,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:25:39,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:25:39,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:25:39,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:25:39,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:25:39,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:25:39,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:25:39,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:25:39,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:25:39,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:25:39,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:25:39,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:25:39,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:25:39,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:25:39,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:25:39,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:25:39,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:25:39,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:25:39,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:25:39,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:25:39,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:25:39,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:25:39,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:25:39,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:25:39,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:25:39,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:25:39,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:25:39,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:25:39,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:25:39,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:25:39,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:25:39,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:25:39,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:25:39,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:25:39,950 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:25:39,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:25:39,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:25:39,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:25:39,952 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:25:39,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:25:39,953 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:25:39,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:25:39,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:25:39,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:25:39,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:25:39,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:25:39,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:25:39,954 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:25:39,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:25:39,955 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:25:39,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:25:39,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:25:39,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:25:39,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:25:39,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:25:39,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:25:39,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:25:39,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:25:39,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:25:39,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:25:39,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:25:39,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:25:39,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:25:40,310 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:25:40,328 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:25:40,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:25:40,334 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:25:40,335 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:25:40,335 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_time_var_mutex.i [2019-10-13 23:25:40,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2ae7e1a/ac619e4ae0e84f85ad8868070da96561/FLAG98e8ff166 [2019-10-13 23:25:40,979 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:25:40,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_time_var_mutex.i [2019-10-13 23:25:40,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2ae7e1a/ac619e4ae0e84f85ad8868070da96561/FLAG98e8ff166 [2019-10-13 23:25:41,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2ae7e1a/ac619e4ae0e84f85ad8868070da96561 [2019-10-13 23:25:41,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:25:41,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:25:41,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:25:41,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:25:41,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:25:41,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:25:41" (1/1) ... [2019-10-13 23:25:41,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a30decc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:41, skipping insertion in model container [2019-10-13 23:25:41,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:25:41" (1/1) ... [2019-10-13 23:25:41,291 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:25:41,365 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:25:41,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:25:41,977 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:25:42,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:25:42,157 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:25:42,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:42 WrapperNode [2019-10-13 23:25:42,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:25:42,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:25:42,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:25:42,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:25:42,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:42" (1/1) ... [2019-10-13 23:25:42,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:42" (1/1) ... [2019-10-13 23:25:42,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:42" (1/1) ... [2019-10-13 23:25:42,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:42" (1/1) ... [2019-10-13 23:25:42,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:42" (1/1) ... [2019-10-13 23:25:42,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:42" (1/1) ... [2019-10-13 23:25:42,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:42" (1/1) ... [2019-10-13 23:25:42,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:25:42,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:25:42,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:25:42,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:25:42,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:25:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:25:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:25:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-13 23:25:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 23:25:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 23:25:42,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-13 23:25:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-13 23:25:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-13 23:25:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 23:25:42,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2019-10-13 23:25:42,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2019-10-13 23:25:42,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2019-10-13 23:25:42,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2019-10-13 23:25:42,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2019-10-13 23:25:42,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2019-10-13 23:25:42,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2019-10-13 23:25:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2019-10-13 23:25:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2019-10-13 23:25:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2019-10-13 23:25:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2019-10-13 23:25:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2019-10-13 23:25:42,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2019-10-13 23:25:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2019-10-13 23:25:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2019-10-13 23:25:42,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2019-10-13 23:25:42,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:25:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:25:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 23:25:42,388 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 23:25:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 23:25:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:25:42,389 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 23:25:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 23:25:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 23:25:42,390 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 23:25:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 23:25:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 23:25:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 23:25:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 23:25:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 23:25:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 23:25:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 23:25:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 23:25:42,392 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 23:25:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 23:25:42,393 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 23:25:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 23:25:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 23:25:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 23:25:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-13 23:25:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-13 23:25:42,394 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-13 23:25:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 23:25:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 23:25:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 23:25:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 23:25:42,395 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 23:25:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 23:25:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 23:25:42,396 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 23:25:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 23:25:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 23:25:42,397 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 23:25:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 23:25:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 23:25:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 23:25:42,398 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 23:25:42,399 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 23:25:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 23:25:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 23:25:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 23:25:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 23:25:42,401 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 23:25:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 23:25:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 23:25:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 23:25:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 23:25:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 23:25:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 23:25:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 23:25:42,404 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 23:25:42,404 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 23:25:42,404 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 23:25:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 23:25:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 23:25:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 23:25:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:25:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 23:25:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 23:25:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:25:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 23:25:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 23:25:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 23:25:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 23:25:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 23:25:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 23:25:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 23:25:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 23:25:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:25:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 23:25:42,408 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 23:25:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 23:25:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 23:25:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 23:25:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 23:25:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 23:25:42,409 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 23:25:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 23:25:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 23:25:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 23:25:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 23:25:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 23:25:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 23:25:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 23:25:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 23:25:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 23:25:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 23:25:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 23:25:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 23:25:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 23:25:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 23:25:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 23:25:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 23:25:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 23:25:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 23:25:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 23:25:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 23:25:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 23:25:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 23:25:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 23:25:42,414 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 23:25:42,415 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 23:25:42,415 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 23:25:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 23:25:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 23:25:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 23:25:42,419 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 23:25:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 23:25:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:25:42,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-10-13 23:25:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-10-13 23:25:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 23:25:42,421 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2019-10-13 23:25:42,422 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2019-10-13 23:25:42,428 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2019-10-13 23:25:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:25:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:25:42,429 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2019-10-13 23:25:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2019-10-13 23:25:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2019-10-13 23:25:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2019-10-13 23:25:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:25:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:25:42,430 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2019-10-13 23:25:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2019-10-13 23:25:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2019-10-13 23:25:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2019-10-13 23:25:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2019-10-13 23:25:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2019-10-13 23:25:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2019-10-13 23:25:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2019-10-13 23:25:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2019-10-13 23:25:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:25:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:25:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:25:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:25:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-13 23:25:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:25:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 23:25:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:25:43,155 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !(0 != ~__CS_ret~0 % 256); [2019-10-13 23:25:43,155 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-13 23:25:43,156 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !(0 != ~__CS_ret~0 % 256); [2019-10-13 23:25:43,156 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-13 23:25:43,220 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !(0 != ~__CS_ret~0 % 256); [2019-10-13 23:25:43,221 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-13 23:25:43,221 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !(0 != ~__CS_ret~0 % 256); [2019-10-13 23:25:43,221 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-13 23:25:50,622 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:25:50,622 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 23:25:50,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:25:50 BoogieIcfgContainer [2019-10-13 23:25:50,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:25:50,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:25:50,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:25:50,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:25:50,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:25:41" (1/3) ... [2019-10-13 23:25:50,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e784062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:25:50, skipping insertion in model container [2019-10-13 23:25:50,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:25:42" (2/3) ... [2019-10-13 23:25:50,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e784062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:25:50, skipping insertion in model container [2019-10-13 23:25:50,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:25:50" (3/3) ... [2019-10-13 23:25:50,631 INFO L109 eAbstractionObserver]: Analyzing ICFG cs_time_var_mutex.i [2019-10-13 23:25:50,641 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:25:50,649 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:25:50,659 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:25:50,685 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:25:50,685 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:25:50,685 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:25:50,685 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:25:50,685 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:25:50,685 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:25:50,686 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:25:50,686 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:25:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2019-10-13 23:25:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 23:25:50,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:25:50,715 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:25:50,717 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:25:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:25:50,722 INFO L82 PathProgramCache]: Analyzing trace with hash 637265356, now seen corresponding path program 1 times [2019-10-13 23:25:50,731 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:25:50,732 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146278458] [2019-10-13 23:25:50,732 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:25:50,732 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:25:50,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:25:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:25:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:25:51,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146278458] [2019-10-13 23:25:51,385 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:25:51,385 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:25:51,385 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889960534] [2019-10-13 23:25:51,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:25:51,390 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:25:51,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:25:51,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:25:51,406 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 3 states. [2019-10-13 23:25:53,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:25:53,523 INFO L93 Difference]: Finished difference Result 169 states and 228 transitions. [2019-10-13 23:25:53,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:25:53,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-13 23:25:53,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:25:53,534 INFO L225 Difference]: With dead ends: 169 [2019-10-13 23:25:53,534 INFO L226 Difference]: Without dead ends: 83 [2019-10-13 23:25:53,538 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:25:53,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-13 23:25:53,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2019-10-13 23:25:53,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-10-13 23:25:53,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 110 transitions. [2019-10-13 23:25:53,590 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 110 transitions. Word has length 16 [2019-10-13 23:25:53,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:25:53,591 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 110 transitions. [2019-10-13 23:25:53,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:25:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 110 transitions. [2019-10-13 23:25:53,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 23:25:53,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:25:53,593 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:25:53,593 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:25:53,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:25:53,594 INFO L82 PathProgramCache]: Analyzing trace with hash -630674836, now seen corresponding path program 1 times [2019-10-13 23:25:53,594 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:25:53,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845328122] [2019-10-13 23:25:53,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:25:53,595 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:25:53,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:25:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:25:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:25:53,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845328122] [2019-10-13 23:25:53,804 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:25:53,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:25:53,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009059938] [2019-10-13 23:25:53,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:25:53,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:25:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:25:53,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:25:53,807 INFO L87 Difference]: Start difference. First operand 82 states and 110 transitions. Second operand 3 states. [2019-10-13 23:25:53,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:25:53,837 INFO L93 Difference]: Finished difference Result 159 states and 216 transitions. [2019-10-13 23:25:53,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:25:53,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-13 23:25:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:25:53,840 INFO L225 Difference]: With dead ends: 159 [2019-10-13 23:25:53,840 INFO L226 Difference]: Without dead ends: 83 [2019-10-13 23:25:53,841 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:25:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-13 23:25:53,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-10-13 23:25:53,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-13 23:25:53,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2019-10-13 23:25:53,855 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 111 transitions. Word has length 18 [2019-10-13 23:25:53,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:25:53,855 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 111 transitions. [2019-10-13 23:25:53,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:25:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 111 transitions. [2019-10-13 23:25:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-13 23:25:53,857 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:25:53,857 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:25:53,857 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:25:53,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:25:53,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1277482324, now seen corresponding path program 1 times [2019-10-13 23:25:53,858 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:25:53,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207385640] [2019-10-13 23:25:53,858 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:25:53,858 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:25:53,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:25:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:25:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:25:54,129 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207385640] [2019-10-13 23:25:54,129 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:25:54,129 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:25:54,129 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115607588] [2019-10-13 23:25:54,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:25:54,130 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:25:54,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:25:54,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:25:54,131 INFO L87 Difference]: Start difference. First operand 83 states and 111 transitions. Second operand 5 states. [2019-10-13 23:25:54,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:25:54,214 INFO L93 Difference]: Finished difference Result 137 states and 185 transitions. [2019-10-13 23:25:54,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:25:54,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-13 23:25:54,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:25:54,220 INFO L225 Difference]: With dead ends: 137 [2019-10-13 23:25:54,220 INFO L226 Difference]: Without dead ends: 130 [2019-10-13 23:25:54,221 INFO L600 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 [2019-10-13 23:25:54,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2019-10-13 23:25:54,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2019-10-13 23:25:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-13 23:25:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 174 transitions. [2019-10-13 23:25:54,262 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 174 transitions. Word has length 19 [2019-10-13 23:25:54,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:25:54,263 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 174 transitions. [2019-10-13 23:25:54,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:25:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 174 transitions. [2019-10-13 23:25:54,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-13 23:25:54,270 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:25:54,271 INFO L380 BasicCegarLoop]: trace histogram [7, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:25:54,271 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:25:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:25:54,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1131764864, now seen corresponding path program 1 times [2019-10-13 23:25:54,272 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:25:54,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667499445] [2019-10-13 23:25:54,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:25:54,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:25:54,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:25:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:25:55,962 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2019-10-13 23:25:56,250 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 64 [2019-10-13 23:25:56,513 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 52 [2019-10-13 23:25:56,709 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 47 [2019-10-13 23:25:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-13 23:25:56,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667499445] [2019-10-13 23:25:56,758 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:25:56,759 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:25:56,759 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996627206] [2019-10-13 23:25:56,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:25:56,760 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:25:56,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:25:56,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:25:56,761 INFO L87 Difference]: Start difference. First operand 128 states and 174 transitions. Second operand 6 states. [2019-10-13 23:25:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:25:59,300 INFO L93 Difference]: Finished difference Result 204 states and 272 transitions. [2019-10-13 23:25:59,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:25:59,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-10-13 23:25:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:25:59,303 INFO L225 Difference]: With dead ends: 204 [2019-10-13 23:25:59,303 INFO L226 Difference]: Without dead ends: 131 [2019-10-13 23:25:59,304 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:25:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-10-13 23:25:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2019-10-13 23:25:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-13 23:25:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 176 transitions. [2019-10-13 23:25:59,328 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 176 transitions. Word has length 80 [2019-10-13 23:25:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:25:59,329 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 176 transitions. [2019-10-13 23:25:59,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:25:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 176 transitions. [2019-10-13 23:25:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 23:25:59,332 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:25:59,333 INFO L380 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:25:59,333 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:25:59,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:25:59,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1704089877, now seen corresponding path program 1 times [2019-10-13 23:25:59,334 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:25:59,334 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676401954] [2019-10-13 23:25:59,334 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:25:59,334 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:25:59,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:26:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:26:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-10-13 23:26:02,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676401954] [2019-10-13 23:26:02,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521791007] [2019-10-13 23:26:02,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:26:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:26:02,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:26:02,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:26:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-13 23:26:02,905 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:26:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-10-13 23:26:03,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1376887749] [2019-10-13 23:26:03,098 INFO L162 IcfgInterpreter]: Started Sifa with 65 locations of interest [2019-10-13 23:26:03,098 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:26:03,105 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:26:03,112 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:26:03,112 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:26:04,502 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-10-13 23:26:04,828 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2019-10-13 23:26:05,293 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 357 [2019-10-13 23:26:05,403 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2019-10-13 23:26:05,806 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 357 [2019-10-13 23:26:05,821 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 373 for LOIs [2019-10-13 23:26:08,635 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-13 23:26:09,137 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-10-13 23:26:11,325 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 689 [2019-10-13 23:26:11,693 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 686 [2019-10-13 23:26:12,585 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 687 [2019-10-13 23:26:12,886 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 684 [2019-10-13 23:26:13,200 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 681