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/ldv-sets/test_mutex_unlock_at_exit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 12:52:13,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 12:52:13,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 12:52:13,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 12:52:13,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 12:52:13,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 12:52:13,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 12:52:13,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 12:52:13,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 12:52:13,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 12:52:13,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 12:52:13,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 12:52:13,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 12:52:13,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 12:52:13,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 12:52:13,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 12:52:13,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 12:52:13,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 12:52:13,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 12:52:13,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 12:52:13,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 12:52:13,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 12:52:13,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 12:52:13,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 12:52:13,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 12:52:13,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 12:52:13,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 12:52:13,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 12:52:13,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 12:52:13,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 12:52:13,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 12:52:13,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 12:52:13,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 12:52:13,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 12:52:13,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 12:52:13,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 12:52:13,213 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 12:52:13,213 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 12:52:13,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 12:52:13,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 12:52:13,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 12:52:13,216 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 [2019-10-07 12:52:13,235 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 12:52:13,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 12:52:13,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 12:52:13,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 12:52:13,237 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 12:52:13,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 12:52:13,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 12:52:13,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 12:52:13,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 12:52:13,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 12:52:13,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 12:52:13,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 12:52:13,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 12:52:13,245 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 12:52:13,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 12:52:13,246 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 12:52:13,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 12:52:13,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 12:52:13,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 12:52:13,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 12:52:13,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 12:52:13,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 12:52:13,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 12:52:13,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 12:52:13,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 12:52:13,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 12:52:13,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 12:52:13,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 12:52:13,251 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 [2019-10-07 12:52:13,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 12:52:13,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 12:52:13,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 12:52:13,586 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 12:52:13,586 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 12:52:13,587 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-07 12:52:13,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e06e9c5/7f24168c10a64ef78fd3b955b2c6eac9/FLAGdf075009d [2019-10-07 12:52:14,322 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 12:52:14,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-10-07 12:52:14,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e06e9c5/7f24168c10a64ef78fd3b955b2c6eac9/FLAGdf075009d [2019-10-07 12:52:14,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9e06e9c5/7f24168c10a64ef78fd3b955b2c6eac9 [2019-10-07 12:52:14,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 12:52:14,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 12:52:14,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 12:52:14,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 12:52:14,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 12:52:14,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:52:14" (1/1) ... [2019-10-07 12:52:14,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc444e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:14, skipping insertion in model container [2019-10-07 12:52:14,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:52:14" (1/1) ... [2019-10-07 12:52:14,635 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 12:52:14,704 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 12:52:15,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:52:15,185 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 12:52:15,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:52:15,354 INFO L192 MainTranslator]: Completed translation [2019-10-07 12:52:15,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:15 WrapperNode [2019-10-07 12:52:15,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 12:52:15,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 12:52:15,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 12:52:15,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 12:52:15,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:15" (1/1) ... [2019-10-07 12:52:15,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:15" (1/1) ... [2019-10-07 12:52:15,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:15" (1/1) ... [2019-10-07 12:52:15,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:15" (1/1) ... [2019-10-07 12:52:15,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:15" (1/1) ... [2019-10-07 12:52:15,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:15" (1/1) ... [2019-10-07 12:52:15,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:15" (1/1) ... [2019-10-07 12:52:15,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 12:52:15,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 12:52:15,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 12:52:15,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 12:52:15,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:15" (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 [2019-10-07 12:52:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 12:52:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 12:52:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-07 12:52:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-07 12:52:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-07 12:52:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-10-07 12:52:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-10-07 12:52:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-10-07 12:52:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-10-07 12:52:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-10-07 12:52:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-10-07 12:52:15,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-10-07 12:52:15,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-10-07 12:52:15,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-10-07 12:52:15,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-07 12:52:15,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-10-07 12:52:15,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-10-07 12:52:15,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-10-07 12:52:15,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-07 12:52:15,580 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-07 12:52:15,580 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-07 12:52:15,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-07 12:52:15,580 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-07 12:52:15,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 12:52:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-07 12:52:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-07 12:52:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-07 12:52:15,581 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-07 12:52:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-07 12:52:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-07 12:52:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-07 12:52:15,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-07 12:52:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-07 12:52:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-07 12:52:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-07 12:52:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-07 12:52:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-07 12:52:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-07 12:52:15,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-07 12:52:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-07 12:52:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-07 12:52:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-07 12:52:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-07 12:52:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-07 12:52:15,584 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-07 12:52:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-07 12:52:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-07 12:52:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-07 12:52:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-07 12:52:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-07 12:52:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-07 12:52:15,585 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-07 12:52:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-07 12:52:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-07 12:52:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-07 12:52:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-07 12:52:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-07 12:52:15,586 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-07 12:52:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-07 12:52:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-07 12:52:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-07 12:52:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-07 12:52:15,587 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-07 12:52:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-07 12:52:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-07 12:52:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-07 12:52:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-07 12:52:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-07 12:52:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-07 12:52:15,588 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-07 12:52:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-07 12:52:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-07 12:52:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-07 12:52:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-07 12:52:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-07 12:52:15,589 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-07 12:52:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 12:52:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 12:52:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 12:52:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 12:52:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-07 12:52:15,590 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-07 12:52:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 12:52:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-07 12:52:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-07 12:52:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-07 12:52:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-07 12:52:15,591 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 12:52:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-07 12:52:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-07 12:52:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-07 12:52:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-07 12:52:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-07 12:52:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-07 12:52:15,592 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-07 12:52:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-07 12:52:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-07 12:52:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-07 12:52:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-07 12:52:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-07 12:52:15,593 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-07 12:52:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-07 12:52:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-07 12:52:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-07 12:52:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-07 12:52:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-07 12:52:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-07 12:52:15,594 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-07 12:52:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-07 12:52:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-07 12:52:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-07 12:52:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-07 12:52:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-07 12:52:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-07 12:52:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-07 12:52:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-07 12:52:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-07 12:52:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-07 12:52:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-07 12:52:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-07 12:52:15,596 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-07 12:52:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-07 12:52:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-07 12:52:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-07 12:52:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-07 12:52:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-07 12:52:15,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 12:52:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 12:52:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 12:52:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-07 12:52:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-07 12:52:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 12:52:15,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-10-07 12:52:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-10-07 12:52:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 12:52:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-10-07 12:52:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-10-07 12:52:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-10-07 12:52:15,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 12:52:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-10-07 12:52:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-10-07 12:52:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-10-07 12:52:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-10-07 12:52:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-07 12:52:15,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-10-07 12:52:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-10-07 12:52:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-10-07 12:52:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 12:52:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-07 12:52:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-07 12:52:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-07 12:52:15,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-07 12:52:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-07 12:52:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 12:52:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 12:52:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 12:52:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-07 12:52:15,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 12:52:16,497 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 12:52:16,498 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-07 12:52:16,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:52:16 BoogieIcfgContainer [2019-10-07 12:52:16,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 12:52:16,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 12:52:16,519 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 12:52:16,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 12:52:16,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:52:14" (1/3) ... [2019-10-07 12:52:16,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2736d9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:52:16, skipping insertion in model container [2019-10-07 12:52:16,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:52:15" (2/3) ... [2019-10-07 12:52:16,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2736d9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:52:16, skipping insertion in model container [2019-10-07 12:52:16,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:52:16" (3/3) ... [2019-10-07 12:52:16,526 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2019-10-07 12:52:16,536 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 12:52:16,545 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-07 12:52:16,554 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-07 12:52:16,581 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 12:52:16,581 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 12:52:16,581 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 12:52:16,582 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 12:52:16,582 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 12:52:16,582 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 12:52:16,582 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 12:52:16,582 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 12:52:16,604 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2019-10-07 12:52:16,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-07 12:52:16,612 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:52:16,613 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 12:52:16,615 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:52:16,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:52:16,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1871921088, now seen corresponding path program 1 times [2019-10-07 12:52:16,632 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:52:16,632 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:16,632 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:16,633 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:52:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:52:16,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 12:52:16,895 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:16,895 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:52:16,896 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 12:52:16,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 12:52:16,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 12:52:16,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 12:52:16,918 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 4 states. [2019-10-07 12:52:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:52:16,982 INFO L93 Difference]: Finished difference Result 167 states and 195 transitions. [2019-10-07 12:52:16,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 12:52:16,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-07 12:52:16,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:52:17,006 INFO L225 Difference]: With dead ends: 167 [2019-10-07 12:52:17,008 INFO L226 Difference]: Without dead ends: 84 [2019-10-07 12:52:17,019 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 12:52:17,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-10-07 12:52:17,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2019-10-07 12:52:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-10-07 12:52:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2019-10-07 12:52:17,109 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 26 [2019-10-07 12:52:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:52:17,110 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2019-10-07 12:52:17,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 12:52:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2019-10-07 12:52:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-07 12:52:17,114 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:52:17,114 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 12:52:17,115 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:52:17,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:52:17,116 INFO L82 PathProgramCache]: Analyzing trace with hash -408449523, now seen corresponding path program 1 times [2019-10-07 12:52:17,117 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:52:17,117 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:17,117 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:17,117 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:52:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:52:17,452 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2019-10-07 12:52:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 12:52:17,484 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:17,485 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:52:17,485 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 12:52:17,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 12:52:17,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 12:52:17,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 12:52:17,492 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand 5 states. [2019-10-07 12:52:18,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:52:18,083 INFO L93 Difference]: Finished difference Result 223 states and 272 transitions. [2019-10-07 12:52:18,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 12:52:18,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2019-10-07 12:52:18,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:52:18,088 INFO L225 Difference]: With dead ends: 223 [2019-10-07 12:52:18,088 INFO L226 Difference]: Without dead ends: 152 [2019-10-07 12:52:18,090 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 12:52:18,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-10-07 12:52:18,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 122. [2019-10-07 12:52:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-10-07 12:52:18,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2019-10-07 12:52:18,130 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 27 [2019-10-07 12:52:18,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:52:18,132 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2019-10-07 12:52:18,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 12:52:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2019-10-07 12:52:18,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-07 12:52:18,139 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:52:18,140 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 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] [2019-10-07 12:52:18,140 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:52:18,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:52:18,147 INFO L82 PathProgramCache]: Analyzing trace with hash 870081906, now seen corresponding path program 1 times [2019-10-07 12:52:18,147 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:52:18,148 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:18,148 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:18,148 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:52:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:52:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-07 12:52:18,324 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:18,324 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 12:52:18,324 INFO L95 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 [2019-10-07 12:52:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:52:18,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 12:52:18,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 12:52:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-07 12:52:18,543 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 12:52:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-07 12:52:18,684 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 12:52:18,684 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 4 [2019-10-07 12:52:18,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 12:52:18,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 12:52:18,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 12:52:18,686 INFO L87 Difference]: Start difference. First operand 122 states and 147 transitions. Second operand 4 states. [2019-10-07 12:52:18,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:52:18,724 INFO L93 Difference]: Finished difference Result 220 states and 266 transitions. [2019-10-07 12:52:18,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 12:52:18,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2019-10-07 12:52:18,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:52:18,727 INFO L225 Difference]: With dead ends: 220 [2019-10-07 12:52:18,728 INFO L226 Difference]: Without dead ends: 128 [2019-10-07 12:52:18,729 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 12:52:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-10-07 12:52:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2019-10-07 12:52:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-10-07 12:52:18,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2019-10-07 12:52:18,751 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 70 [2019-10-07 12:52:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:52:18,751 INFO L462 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2019-10-07 12:52:18,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 12:52:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2019-10-07 12:52:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-07 12:52:18,754 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:52:18,754 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 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] [2019-10-07 12:52:18,959 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 12:52:18,966 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:52:18,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:52:18,967 INFO L82 PathProgramCache]: Analyzing trace with hash 185405279, now seen corresponding path program 1 times [2019-10-07 12:52:18,967 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:52:18,967 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:18,967 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:18,967 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:52:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:52:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-07 12:52:19,424 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:19,425 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:52:19,425 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-07 12:52:19,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-07 12:52:19,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-07 12:52:19,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-07 12:52:19,427 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand 15 states. [2019-10-07 12:52:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:52:21,187 INFO L93 Difference]: Finished difference Result 234 states and 277 transitions. [2019-10-07 12:52:21,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-07 12:52:21,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 82 [2019-10-07 12:52:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:52:21,191 INFO L225 Difference]: With dead ends: 234 [2019-10-07 12:52:21,191 INFO L226 Difference]: Without dead ends: 168 [2019-10-07 12:52:21,193 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=905, Unknown=0, NotChecked=0, Total=1056 [2019-10-07 12:52:21,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2019-10-07 12:52:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 139. [2019-10-07 12:52:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-07 12:52:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 167 transitions. [2019-10-07 12:52:21,218 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 167 transitions. Word has length 82 [2019-10-07 12:52:21,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:52:21,219 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 167 transitions. [2019-10-07 12:52:21,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-07 12:52:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 167 transitions. [2019-10-07 12:52:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-07 12:52:21,221 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:52:21,221 INFO L385 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 12:52:21,222 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:52:21,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:52:21,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1034287076, now seen corresponding path program 1 times [2019-10-07 12:52:21,222 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:52:21,223 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:21,223 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:21,223 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:21,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:52:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:52:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-07 12:52:21,671 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:21,671 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 12:52:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 12:52:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:52:21,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 55 conjunts are in the unsatisfiable core [2019-10-07 12:52:21,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 12:52:21,930 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-07 12:52:21,931 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:21,942 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:21,945 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-07 12:52:21,946 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:21,951 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:21,952 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 12:52:21,952 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:13 [2019-10-07 12:52:22,008 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-07 12:52:22,008 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:22,017 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:22,020 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-07 12:52:22,020 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:22,026 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:22,026 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 12:52:22,027 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:13 [2019-10-07 12:52:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-07 12:52:22,239 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 12:52:22,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:52:22,831 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-10-07 12:52:22,832 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:22,841 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:22,849 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-10-07 12:52:22,850 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:22,858 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:22,859 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 12:52:22,859 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2019-10-07 12:52:23,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:52:23,022 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-10-07 12:52:23,022 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:23,028 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:23,032 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-10-07 12:52:23,032 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:23,037 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:23,038 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 12:52:23,038 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-10-07 12:52:23,159 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:52:23,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:52:23,242 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2019-10-07 12:52:23,243 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:23,248 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2019-10-07 12:52:23,248 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:23,268 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:23,273 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2019-10-07 12:52:23,274 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:23,278 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2019-10-07 12:52:23,278 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:23,295 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:23,296 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-10-07 12:52:23,296 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:81, output treesize:49 [2019-10-07 12:52:23,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:52:23,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:52:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-07 12:52:23,447 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 12:52:23,447 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15, 10] total 30 [2019-10-07 12:52:23,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 12:52:23,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 12:52:23,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2019-10-07 12:52:23,452 INFO L87 Difference]: Start difference. First operand 139 states and 167 transitions. Second operand 10 states. [2019-10-07 12:52:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:52:24,692 INFO L93 Difference]: Finished difference Result 261 states and 308 transitions. [2019-10-07 12:52:24,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 12:52:24,694 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2019-10-07 12:52:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:52:24,696 INFO L225 Difference]: With dead ends: 261 [2019-10-07 12:52:24,697 INFO L226 Difference]: Without dead ends: 147 [2019-10-07 12:52:24,700 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=368, Invalid=1438, Unknown=0, NotChecked=0, Total=1806 [2019-10-07 12:52:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-10-07 12:52:24,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2019-10-07 12:52:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-10-07 12:52:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 135 transitions. [2019-10-07 12:52:24,719 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 135 transitions. Word has length 72 [2019-10-07 12:52:24,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:52:24,719 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 135 transitions. [2019-10-07 12:52:24,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 12:52:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 135 transitions. [2019-10-07 12:52:24,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-07 12:52:24,721 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:52:24,721 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-10-07 12:52:24,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 12:52:24,927 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:52:24,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:52:24,927 INFO L82 PathProgramCache]: Analyzing trace with hash 44411436, now seen corresponding path program 1 times [2019-10-07 12:52:24,928 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:52:24,928 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:24,928 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:24,929 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:52:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:52:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:52:25,865 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2019-10-07 12:52:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 12:52:26,287 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:52:26,287 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 12:52:26,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 12:52:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:52:26,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 132 conjunts are in the unsatisfiable core [2019-10-07 12:52:26,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 12:52:26,534 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-10-07 12:52:26,534 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:26,541 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:26,542 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-07 12:52:26,542 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-10-07 12:52:26,858 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:26,859 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-10-07 12:52:26,860 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:26,867 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:26,868 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-07 12:52:26,868 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-10-07 12:52:27,011 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-07 12:52:27,012 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:27,022 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-07 12:52:27,022 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 12:52:27,023 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2019-10-07 12:52:27,643 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:52:27,793 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-10-07 12:52:27,794 INFO L341 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2019-10-07 12:52:27,795 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 108 [2019-10-07 12:52:27,795 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 12:52:27,975 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-10-07 12:52:27,975 INFO L567 ElimStorePlain]: treesize reduction 36, result has 81.2 percent of original size [2019-10-07 12:52:27,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:52:27,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:52:27,978 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-07 12:52:27,979 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:161, output treesize:155 [2019-10-07 12:52:27,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:52:27,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:52:28,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:52:28,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:52:30,220 WARN L191 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-10-07 12:52:30,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-10-07 12:52:51,754 WARN L191 SmtUtils]: Spent 11.39 s on a formula simplification that was a NOOP. DAG size: 155 [2019-10-07 12:53:08,511 WARN L191 SmtUtils]: Spent 4.58 s on a formula simplification. DAG size of input: 153 DAG size of output: 104 [2019-10-07 12:53:08,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:53:08,544 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,558 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,582 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,587 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,594 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,647 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,696 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,697 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-07 12:53:08,794 INFO L341 Elim1Store]: treesize reduction 70, result has 38.6 percent of original size [2019-10-07 12:53:08,795 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 137 [2019-10-07 12:53:08,797 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-07 12:53:08,805 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,817 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,834 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,836 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:08,839 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:09,117 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-10-07 12:53:09,118 INFO L341 Elim1Store]: treesize reduction 148, result has 55.2 percent of original size [2019-10-07 12:53:09,119 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 335 treesize of output 265 [2019-10-07 12:53:09,120 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-07 12:53:09,126 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:09,133 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:09,135 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:09,137 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:09,138 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:09,148 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:09,155 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-07 12:53:09,161 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-07 12:53:09,239 INFO L341 Elim1Store]: treesize reduction 17, result has 85.1 percent of original size [2019-10-07 12:53:09,239 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 334 treesize of output 192 [2019-10-07 12:53:09,241 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-07 12:53:09,356 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 40 [2019-10-07 12:53:09,357 INFO L567 ElimStorePlain]: treesize reduction 501, result has 17.7 percent of original size [2019-10-07 12:53:09,358 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-07 12:53:09,358 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:1464, output treesize:130 [2019-10-07 12:53:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 12:53:11,238 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 12:53:13,050 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-10-07 12:53:13,282 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-07 12:53:13,762 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-10-07 12:53:13,880 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-10-07 12:53:14,061 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-07 12:53:14,311 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-10-07 12:53:14,491 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-07 12:53:14,707 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-10-07 12:53:14,815 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-10-07 12:53:18,552 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-10-07 12:53:18,658 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-10-07 12:53:18,782 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-07 12:53:19,240 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-10-07 12:53:19,374 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-10-07 12:53:19,548 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-10-07 12:53:19,733 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-10-07 12:53:56,750 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 12:53:56,752 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-07 12:53:56,759 INFO L168 Benchmark]: Toolchain (without parser) took 102143.21 ms. Allocated memory was 144.7 MB in the beginning and 422.1 MB in the end (delta: 277.3 MB). Free memory was 100.4 MB in the beginning and 354.8 MB in the end (delta: -254.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2019-10-07 12:53:56,763 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 12:53:56,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.38 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 163.2 MB in the end (delta: -62.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-10-07 12:53:56,764 INFO L168 Benchmark]: Boogie Preprocessor took 146.65 ms. Allocated memory is still 202.4 MB. Free memory was 163.2 MB in the beginning and 159.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-10-07 12:53:56,768 INFO L168 Benchmark]: RCFGBuilder took 1014.37 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 159.8 MB in the beginning and 206.2 MB in the end (delta: -46.4 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. [2019-10-07 12:53:56,769 INFO L168 Benchmark]: TraceAbstraction took 100238.42 ms. Allocated memory was 234.9 MB in the beginning and 422.1 MB in the end (delta: 187.2 MB). Free memory was 206.2 MB in the beginning and 354.8 MB in the end (delta: -148.5 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2019-10-07 12:53:56,775 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 738.38 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 163.2 MB in the end (delta: -62.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.65 ms. Allocated memory is still 202.4 MB. Free memory was 163.2 MB in the beginning and 159.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1014.37 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 159.8 MB in the beginning and 206.2 MB in the end (delta: -46.4 MB). Peak memory consumption was 78.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 100238.42 ms. Allocated memory was 234.9 MB in the beginning and 422.1 MB in the end (delta: 187.2 MB). Free memory was 206.2 MB in the beginning and 354.8 MB in the end (delta: -148.5 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...