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 0.1.24-13a467a-m [2019-10-15 03:30:18,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:30:18,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:30:18,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:30:18,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:30:18,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:30:18,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:30:18,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:30:18,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:30:18,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:30:18,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:30:18,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:30:18,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:30:18,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:30:18,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:30:18,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:30:18,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:30:18,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:30:18,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:30:18,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:30:18,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:30:18,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:30:18,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:30:18,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:30:18,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:30:18,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:30:18,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:30:18,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:30:18,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:30:18,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:30:18,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:30:18,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:30:18,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:30:18,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:30:18,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:30:18,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:30:18,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:30:18,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:30:18,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:30:18,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:30:18,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:30:18,171 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:30:18,208 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:30:18,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:30:18,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:30:18,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:30:18,211 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:30:18,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:30:18,212 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:30:18,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:30:18,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:30:18,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:30:18,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:30:18,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:30:18,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:30:18,213 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:30:18,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:30:18,214 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:30:18,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:30:18,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:30:18,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:30:18,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:30:18,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:30:18,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:30:18,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:30:18,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:30:18,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:30:18,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:30:18,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:30:18,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:30:18,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:30:18,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:30:18,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:30:18,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:30:18,504 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:30:18,504 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:30:18,505 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_lamport.i [2019-10-15 03:30:18,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65885503/3af7f69827fc41729b222b58461bdf59/FLAG06cc0c3d0 [2019-10-15 03:30:19,202 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:30:19,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_lamport.i [2019-10-15 03:30:19,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65885503/3af7f69827fc41729b222b58461bdf59/FLAG06cc0c3d0 [2019-10-15 03:30:19,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65885503/3af7f69827fc41729b222b58461bdf59 [2019-10-15 03:30:19,454 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:30:19,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:30:19,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:30:19,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:30:19,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:30:19,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:19" (1/1) ... [2019-10-15 03:30:19,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39589b6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:19, skipping insertion in model container [2019-10-15 03:30:19,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:30:19" (1/1) ... [2019-10-15 03:30:19,476 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:30:19,540 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:30:20,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:30:20,242 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:30:20,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:30:20,458 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:30:20,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20 WrapperNode [2019-10-15 03:30:20,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:30:20,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:30:20,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:30:20,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:30:20,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... [2019-10-15 03:30:20,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:30:20,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:30:20,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:30:20,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:30:20,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:30:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:30:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:30:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-15 03:30:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 03:30:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 03:30:20,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-15 03:30:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-15 03:30:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-15 03:30:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:30:20,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2019-10-15 03:30:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2019-10-15 03:30:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2019-10-15 03:30:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2019-10-15 03:30:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2019-10-15 03:30:20,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2019-10-15 03:30:20,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2019-10-15 03:30:20,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2019-10-15 03:30:20,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2019-10-15 03:30:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2019-10-15 03:30:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2019-10-15 03:30:20,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2019-10-15 03:30:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2019-10-15 03:30:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-15 03:30:20,698 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-10-15 03:30:20,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2019-10-15 03:30:20,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:30:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:30:20,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 03:30:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-15 03:30:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:30:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:30:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 03:30:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 03:30:20,700 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 03:30:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 03:30:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 03:30:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 03:30:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 03:30:20,701 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 03:30:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 03:30:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 03:30:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 03:30:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 03:30:20,702 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 03:30:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 03:30:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 03:30:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 03:30:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 03:30:20,703 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 03:30:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-15 03:30:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-15 03:30:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-15 03:30:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 03:30:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 03:30:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 03:30:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 03:30:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 03:30:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 03:30:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 03:30:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 03:30:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 03:30:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 03:30:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 03:30:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 03:30:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 03:30:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 03:30:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 03:30:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 03:30:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 03:30:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 03:30:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 03:30:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 03:30:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 03:30:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 03:30:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 03:30:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 03:30:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 03:30:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 03:30:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 03:30:20,709 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 03:30:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 03:30:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 03:30:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 03:30:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 03:30:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 03:30:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 03:30:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:30:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 03:30:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 03:30:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:30:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 03:30:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 03:30:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 03:30:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 03:30:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 03:30:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 03:30:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 03:30:20,713 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 03:30:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 03:30:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 03:30:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 03:30:20,714 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 03:30:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 03:30:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 03:30:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 03:30:20,715 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 03:30:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 03:30:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 03:30:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 03:30:20,716 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 03:30:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 03:30:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 03:30:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 03:30:20,717 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 03:30:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 03:30:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 03:30:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 03:30:20,718 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 03:30:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 03:30:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 03:30:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 03:30:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 03:30:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 03:30:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 03:30:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 03:30:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 03:30:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 03:30:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 03:30:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 03:30:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 03:30:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 03:30:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 03:30:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 03:30:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 03:30:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 03:30:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 03:30:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 03:30:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 03:30:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:30:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-10-15 03:30:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-10-15 03:30:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:30:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2019-10-15 03:30:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2019-10-15 03:30:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2019-10-15 03:30:20,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:30:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:30:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2019-10-15 03:30:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2019-10-15 03:30:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2019-10-15 03:30:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2019-10-15 03:30:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:30:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:30:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2019-10-15 03:30:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2019-10-15 03:30:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2019-10-15 03:30:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2019-10-15 03:30:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2019-10-15 03:30:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2019-10-15 03:30:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-15 03:30:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-10-15 03:30:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2019-10-15 03:30:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:30:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:30:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:30:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:30:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2019-10-15 03:30:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:30:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 03:30:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:30:21,788 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:21,788 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:21,788 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:21,789 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:21,789 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:21,789 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:21,789 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:21,789 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:22,005 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:22,006 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:22,006 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:22,006 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:22,006 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:22,006 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:22,006 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume !(0 != ~__CS_ret~0 % 256); [2019-10-15 03:30:22,007 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume 0 != ~__CS_ret~0 % 256;#res.base, #res.offset := 0, 0; [2019-10-15 03:30:29,626 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:30:29,626 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-15 03:30:29,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:29 BoogieIcfgContainer [2019-10-15 03:30:29,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:30:29,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:30:29,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:30:29,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:30:29,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:30:19" (1/3) ... [2019-10-15 03:30:29,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660f95ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:29, skipping insertion in model container [2019-10-15 03:30:29,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:30:20" (2/3) ... [2019-10-15 03:30:29,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660f95ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:30:29, skipping insertion in model container [2019-10-15 03:30:29,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:30:29" (3/3) ... [2019-10-15 03:30:29,637 INFO L109 eAbstractionObserver]: Analyzing ICFG cs_lamport.i [2019-10-15 03:30:29,649 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:30:29,660 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:30:29,673 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:30:29,702 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:30:29,703 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:30:29,703 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:30:29,703 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:30:29,703 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:30:29,703 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:30:29,704 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:30:29,704 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:30:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2019-10-15 03:30:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 03:30:29,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:29,738 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:30:29,740 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:29,746 INFO L82 PathProgramCache]: Analyzing trace with hash 996237452, now seen corresponding path program 1 times [2019-10-15 03:30:29,755 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:29,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182977457] [2019-10-15 03:30:29,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:29,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:29,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:30,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:30:30,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182977457] [2019-10-15 03:30:30,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:30,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:30,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086400525] [2019-10-15 03:30:30,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:30,362 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:30,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:30,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:30,380 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 3 states. [2019-10-15 03:30:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:32,514 INFO L93 Difference]: Finished difference Result 117 states and 152 transitions. [2019-10-15 03:30:32,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:32,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-15 03:30:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:32,526 INFO L225 Difference]: With dead ends: 117 [2019-10-15 03:30:32,527 INFO L226 Difference]: Without dead ends: 57 [2019-10-15 03:30:32,531 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 [2019-10-15 03:30:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-15 03:30:32,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2019-10-15 03:30:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-15 03:30:32,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2019-10-15 03:30:32,577 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 16 [2019-10-15 03:30:32,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:32,577 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2019-10-15 03:30:32,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2019-10-15 03:30:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 03:30:32,579 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:32,580 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:30:32,580 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:32,580 INFO L82 PathProgramCache]: Analyzing trace with hash -243101255, now seen corresponding path program 1 times [2019-10-15 03:30:32,581 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:32,581 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183652055] [2019-10-15 03:30:32,581 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:32,581 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:32,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:30:32,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183652055] [2019-10-15 03:30:32,773 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:32,773 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:30:32,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712001786] [2019-10-15 03:30:32,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:30:32,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:32,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:30:32,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:30:32,778 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand 3 states. [2019-10-15 03:30:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:32,815 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2019-10-15 03:30:32,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:30:32,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-15 03:30:32,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:32,818 INFO L225 Difference]: With dead ends: 107 [2019-10-15 03:30:32,818 INFO L226 Difference]: Without dead ends: 57 [2019-10-15 03:30:32,821 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 [2019-10-15 03:30:32,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-15 03:30:32,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2019-10-15 03:30:32,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-15 03:30:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2019-10-15 03:30:32,843 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 18 [2019-10-15 03:30:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:32,846 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2019-10-15 03:30:32,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:30:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2019-10-15 03:30:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 03:30:32,847 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:32,847 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:30:32,848 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:32,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:32,848 INFO L82 PathProgramCache]: Analyzing trace with hash 406595133, now seen corresponding path program 1 times [2019-10-15 03:30:32,848 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:32,849 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477168786] [2019-10-15 03:30:32,849 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:32,849 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:32,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:30:33,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477168786] [2019-10-15 03:30:33,149 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:30:33,149 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:30:33,149 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782230848] [2019-10-15 03:30:33,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:30:33,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:30:33,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:30:33,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:30:33,151 INFO L87 Difference]: Start difference. First operand 57 states and 73 transitions. Second operand 5 states. [2019-10-15 03:30:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:30:33,222 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2019-10-15 03:30:33,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 03:30:33,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-15 03:30:33,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:30:33,231 INFO L225 Difference]: With dead ends: 95 [2019-10-15 03:30:33,232 INFO L226 Difference]: Without dead ends: 88 [2019-10-15 03:30:33,233 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 [2019-10-15 03:30:33,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-15 03:30:33,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2019-10-15 03:30:33,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-10-15 03:30:33,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 113 transitions. [2019-10-15 03:30:33,265 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 113 transitions. Word has length 19 [2019-10-15 03:30:33,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:30:33,271 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 113 transitions. [2019-10-15 03:30:33,271 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:30:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 113 transitions. [2019-10-15 03:30:33,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-15 03:30:33,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:30:33,275 INFO L380 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] [2019-10-15 03:30:33,276 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:30:33,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:30:33,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1335364682, now seen corresponding path program 1 times [2019-10-15 03:30:33,277 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:30:33,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24342709] [2019-10-15 03:30:33,277 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:33,277 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:30:33,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:30:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:30:33,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24342709] [2019-10-15 03:30:33,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537680673] [2019-10-15 03:30:33,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:30:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:30:34,094 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:30:34,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:30:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:30:34,148 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:30:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:30:34,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [493275938] [2019-10-15 03:30:34,298 INFO L162 IcfgInterpreter]: Started Sifa with 47 locations of interest [2019-10-15 03:30:34,298 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:30:34,305 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:30:34,313 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:30:34,314 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:30:34,798 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2019-10-15 03:30:35,972 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2019-10-15 03:30:36,479 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2019-10-15 03:30:36,624 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2019-10-15 03:30:36,847 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 363 DAG size of output: 361 [2019-10-15 03:30:37,076 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 361 [2019-10-15 03:30:37,302 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 377 for LOIs [2019-10-15 03:30:37,643 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 449 [2019-10-15 03:30:38,411 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 555 [2019-10-15 03:30:40,052 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-15 03:30:40,424 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:30:48,086 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 705 [2019-10-15 03:30:48,530 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 702 [2019-10-15 03:30:48,914 WARN L191 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 699 [2019-10-15 03:30:50,055 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 700 [2019-10-15 03:30:50,626 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 697 [2019-10-15 03:30:55,042 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 487