/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:15:11,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:15:11,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:15:11,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:15:11,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:15:11,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:15:11,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:15:11,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:15:11,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:15:11,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:15:11,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:15:11,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:15:11,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:15:11,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:15:11,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:15:11,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:15:11,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:15:11,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:15:11,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:15:11,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:15:11,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:15:11,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:15:11,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:15:11,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:15:11,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 01:15:11,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 01:15:11,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 01:15:11,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 01:15:11,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 01:15:11,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 01:15:11,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 01:15:11,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 01:15:11,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 01:15:11,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 01:15:11,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 01:15:11,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 01:15:11,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 01:15:11,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 01:15:11,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:15:11,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:15:11,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:15:11,130 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 [2020-07-21 01:15:11,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:15:11,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:15:11,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:15:11,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:15:11,159 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:15:11,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:15:11,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:15:11,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:15:11,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:15:11,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:15:11,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:15:11,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:15:11,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:15:11,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:15:11,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:15:11,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:15:11,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:15:11,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:15:11,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:15:11,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:15:11,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:15:11,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:15:11,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:15:11,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:15:11,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:15:11,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:15:11,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:11,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:15:11,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:15:11,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:15:11,438 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:15:11,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:15:11,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:15:11,465 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:15:11,465 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:15:11,466 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-21 01:15:11,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2568a4518/46d96c8b1ab242f8a16fff0cf8092ea9/FLAG7cfa80f89 [2020-07-21 01:15:12,049 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:15:12,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-21 01:15:12,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2568a4518/46d96c8b1ab242f8a16fff0cf8092ea9/FLAG7cfa80f89 [2020-07-21 01:15:12,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2568a4518/46d96c8b1ab242f8a16fff0cf8092ea9 [2020-07-21 01:15:12,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:15:12,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:15:12,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:15:12,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:15:12,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:15:12,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:15:12" (1/1) ... [2020-07-21 01:15:12,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b4dff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:12, skipping insertion in model container [2020-07-21 01:15:12,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:15:12" (1/1) ... [2020-07-21 01:15:12,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:15:12,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:15:12,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:15:12,898 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:15:12,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:15:13,015 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:15:13,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:13 WrapperNode [2020-07-21 01:15:13,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:15:13,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:15:13,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:15:13,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:15:13,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:13" (1/1) ... [2020-07-21 01:15:13,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:13" (1/1) ... [2020-07-21 01:15:13,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:13" (1/1) ... [2020-07-21 01:15:13,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:13" (1/1) ... [2020-07-21 01:15:13,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:13" (1/1) ... [2020-07-21 01:15:13,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:13" (1/1) ... [2020-07-21 01:15:13,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:13" (1/1) ... [2020-07-21 01:15:13,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:15:13,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:15:13,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:15:13,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:15:13,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:13" (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 [2020-07-21 01:15:13,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:15:13,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:15:13,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-21 01:15:13,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-21 01:15:13,167 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 01:15:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-21 01:15:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-07-21 01:15:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-07-21 01:15:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-07-21 01:15:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-07-21 01:15:13,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-07-21 01:15:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-07-21 01:15:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-07-21 01:15:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-07-21 01:15:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-07-21 01:15:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-07-21 01:15:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-07-21 01:15:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-07-21 01:15:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-07-21 01:15:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-21 01:15:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-21 01:15:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-21 01:15:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-21 01:15:13,170 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-21 01:15:13,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:15:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-21 01:15:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-21 01:15:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 01:15:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 01:15:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 01:15:13,171 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 01:15:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 01:15:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 01:15:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 01:15:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 01:15:13,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 01:15:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 01:15:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 01:15:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 01:15:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 01:15:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 01:15:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 01:15:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 01:15:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 01:15:13,173 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 01:15:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 01:15:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 01:15:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 01:15:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 01:15:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 01:15:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 01:15:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 01:15:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 01:15:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 01:15:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 01:15:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 01:15:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 01:15:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 01:15:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 01:15:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 01:15:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 01:15:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 01:15:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 01:15:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 01:15:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 01:15:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 01:15:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 01:15:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 01:15:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 01:15:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 01:15:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 01:15:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 01:15:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 01:15:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 01:15:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 01:15:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 01:15:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 01:15:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 01:15:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 01:15:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 01:15:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 01:15:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 01:15:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 01:15:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 01:15:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 01:15:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 01:15:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 01:15:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 01:15:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:15:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 01:15:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 01:15:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 01:15:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 01:15:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 01:15:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 01:15:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 01:15:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 01:15:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 01:15:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 01:15:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 01:15:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 01:15:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 01:15:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 01:15:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 01:15:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 01:15:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 01:15:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 01:15:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 01:15:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 01:15:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 01:15:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 01:15:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 01:15:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 01:15:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 01:15:13,183 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 01:15:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 01:15:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 01:15:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:15:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 01:15:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:15:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-21 01:15:13,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 01:15:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-07-21 01:15:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-07-21 01:15:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 01:15:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-07-21 01:15:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-07-21 01:15:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-07-21 01:15:13,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 01:15:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-07-21 01:15:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-07-21 01:15:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-07-21 01:15:13,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-07-21 01:15:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-07-21 01:15:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-07-21 01:15:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-07-21 01:15:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-07-21 01:15:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:15:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-21 01:15:13,188 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-21 01:15:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-21 01:15:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-21 01:15:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-21 01:15:13,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:15:13,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:15:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 01:15:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 01:15:13,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:15:13,870 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:15:13,871 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 01:15:13,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:15:13 BoogieIcfgContainer [2020-07-21 01:15:13,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:15:13,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:15:13,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:15:13,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:15:13,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:15:12" (1/3) ... [2020-07-21 01:15:13,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d8bce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:15:13, skipping insertion in model container [2020-07-21 01:15:13,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:15:13" (2/3) ... [2020-07-21 01:15:13,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d8bce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:15:13, skipping insertion in model container [2020-07-21 01:15:13,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:15:13" (3/3) ... [2020-07-21 01:15:13,884 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-07-21 01:15:13,893 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:15:13,901 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-21 01:15:13,913 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-21 01:15:13,934 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:15:13,935 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:15:13,935 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:15:13,935 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:15:13,936 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:15:13,936 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:15:13,936 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:15:13,936 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:15:13,957 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-07-21 01:15:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 01:15:13,964 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:13,965 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 01:15:13,966 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:13,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:13,972 INFO L82 PathProgramCache]: Analyzing trace with hash -326397870, now seen corresponding path program 1 times [2020-07-21 01:15:13,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:13,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645009959] [2020-07-21 01:15:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:14,241 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:15:14,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:14,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:15:14,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-21 01:15:14,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:15:14,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645009959] [2020-07-21 01:15:14,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:15:14,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:15:14,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275873852] [2020-07-21 01:15:14,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:15:14,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:14,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:15:14,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:15:14,302 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 2 states. [2020-07-21 01:15:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:14,341 INFO L93 Difference]: Finished difference Result 204 states and 249 transitions. [2020-07-21 01:15:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:15:14,343 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2020-07-21 01:15:14,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:14,353 INFO L225 Difference]: With dead ends: 204 [2020-07-21 01:15:14,354 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 01:15:14,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:15:14,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 01:15:14,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-21 01:15:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 01:15:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-07-21 01:15:14,410 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2020-07-21 01:15:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:14,411 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-07-21 01:15:14,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:15:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-07-21 01:15:14,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 01:15:14,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:14,414 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 01:15:14,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:14,628 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:14,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:14,629 INFO L82 PathProgramCache]: Analyzing trace with hash -934339182, now seen corresponding path program 1 times [2020-07-21 01:15:14,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:14,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138613122] [2020-07-21 01:15:14,630 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:14,796 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:14,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:14,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 01:15:14,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 01:15:14,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:15:14,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138613122] [2020-07-21 01:15:14,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:15:14,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 01:15:14,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228018005] [2020-07-21 01:15:14,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:15:14,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:14,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:15:14,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:15:14,835 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 4 states. [2020-07-21 01:15:14,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:14,865 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2020-07-21 01:15:14,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:15:14,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-07-21 01:15:14,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:14,872 INFO L225 Difference]: With dead ends: 104 [2020-07-21 01:15:14,872 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 01:15:14,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:15:14,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 01:15:14,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-07-21 01:15:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-21 01:15:14,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-07-21 01:15:14,894 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2020-07-21 01:15:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:14,895 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-07-21 01:15:14,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:15:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-07-21 01:15:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 01:15:14,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:14,897 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 01:15:15,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:15,113 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:15,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:15,114 INFO L82 PathProgramCache]: Analyzing trace with hash 640264123, now seen corresponding path program 1 times [2020-07-21 01:15:15,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:15,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116665261] [2020-07-21 01:15:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:15,271 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:15,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:15,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-21 01:15:15,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:15,426 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 01:15:15,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:15:15,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116665261] [2020-07-21 01:15:15,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:15:15,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:15:15,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443505064] [2020-07-21 01:15:15,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:15:15,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:15,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:15:15,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:15:15,458 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 5 states. [2020-07-21 01:15:15,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:15,737 INFO L93 Difference]: Finished difference Result 267 states and 315 transitions. [2020-07-21 01:15:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:15:15,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-21 01:15:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:15,741 INFO L225 Difference]: With dead ends: 267 [2020-07-21 01:15:15,741 INFO L226 Difference]: Without dead ends: 179 [2020-07-21 01:15:15,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:15:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-07-21 01:15:15,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 152. [2020-07-21 01:15:15,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-07-21 01:15:15,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-07-21 01:15:15,766 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 42 [2020-07-21 01:15:15,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:15,766 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-07-21 01:15:15,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:15:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-07-21 01:15:15,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-21 01:15:15,770 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:15,770 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 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, 1] [2020-07-21 01:15:15,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:15,984 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:15,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:15,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1149911364, now seen corresponding path program 1 times [2020-07-21 01:15:15,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:15,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146392298] [2020-07-21 01:15:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:16,141 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:15:16,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:16,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 01:15:16,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-21 01:15:16,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:15:16,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146392298] [2020-07-21 01:15:16,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:15:16,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 01:15:16,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929457666] [2020-07-21 01:15:16,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:15:16,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:16,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:15:16,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:15:16,179 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 4 states. [2020-07-21 01:15:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:16,198 INFO L93 Difference]: Finished difference Result 272 states and 324 transitions. [2020-07-21 01:15:16,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:15:16,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-07-21 01:15:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:16,201 INFO L225 Difference]: With dead ends: 272 [2020-07-21 01:15:16,202 INFO L226 Difference]: Without dead ends: 158 [2020-07-21 01:15:16,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:15:16,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-21 01:15:16,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-07-21 01:15:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-21 01:15:16,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 186 transitions. [2020-07-21 01:15:16,221 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 186 transitions. Word has length 90 [2020-07-21 01:15:16,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:16,222 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 186 transitions. [2020-07-21 01:15:16,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:15:16,222 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 186 transitions. [2020-07-21 01:15:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-21 01:15:16,225 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:16,225 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2020-07-21 01:15:16,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:16,440 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:16,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1610969230, now seen corresponding path program 1 times [2020-07-21 01:15:16,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:16,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442750057] [2020-07-21 01:15:16,442 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:16,597 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:15:16,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:16,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 01:15:16,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:16,666 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_6|], 2=[|v_#memory_$Pointer$.base_BEFORE_CALL_6|]} [2020-07-21 01:15:16,691 INFO L384 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 [2020-07-21 01:15:16,692 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:16,700 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:16,707 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-07-21 01:15:16,707 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 7 [2020-07-21 01:15:16,708 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:16,713 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:16,714 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:16,714 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:7 [2020-07-21 01:15:16,822 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:15:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-21 01:15:16,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:15:16,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442750057] [2020-07-21 01:15:16,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:15:16,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 01:15:16,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123630207] [2020-07-21 01:15:16,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 01:15:16,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:16,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 01:15:16,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:15:16,864 INFO L87 Difference]: Start difference. First operand 158 states and 186 transitions. Second operand 9 states. [2020-07-21 01:15:18,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:18,093 INFO L93 Difference]: Finished difference Result 356 states and 420 transitions. [2020-07-21 01:15:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 01:15:18,093 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-07-21 01:15:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:18,100 INFO L225 Difference]: With dead ends: 356 [2020-07-21 01:15:18,100 INFO L226 Difference]: Without dead ends: 224 [2020-07-21 01:15:18,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2020-07-21 01:15:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-07-21 01:15:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 161. [2020-07-21 01:15:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-21 01:15:18,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-07-21 01:15:18,141 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 90 [2020-07-21 01:15:18,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:18,141 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-07-21 01:15:18,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 01:15:18,142 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-07-21 01:15:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 01:15:18,145 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:18,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:15:18,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:18,364 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:18,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1106436747, now seen corresponding path program 1 times [2020-07-21 01:15:18,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:18,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012758411] [2020-07-21 01:15:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:18,670 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:18,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 01:15:18,672 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:15:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 01:15:18,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:15:18,862 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 01:15:18,862 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 01:15:19,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:19,116 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 11 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-21 01:15:19,117 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-21 01:15:19,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:15:19 BoogieIcfgContainer [2020-07-21 01:15:19,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:15:19,153 INFO L168 Benchmark]: Toolchain (without parser) took 6866.48 ms. Allocated memory was 137.9 MB in the beginning and 294.6 MB in the end (delta: 156.8 MB). Free memory was 100.2 MB in the beginning and 245.3 MB in the end (delta: -145.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:15:19,154 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 01:15:19,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.13 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 99.8 MB in the beginning and 163.6 MB in the end (delta: -63.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:15:19,155 INFO L168 Benchmark]: Boogie Preprocessor took 84.88 ms. Allocated memory is still 202.9 MB. Free memory was 163.6 MB in the beginning and 160.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:15:19,156 INFO L168 Benchmark]: RCFGBuilder took 773.94 ms. Allocated memory is still 202.9 MB. Free memory was 160.2 MB in the beginning and 99.7 MB in the end (delta: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:15:19,156 INFO L168 Benchmark]: TraceAbstraction took 5274.84 ms. Allocated memory was 202.9 MB in the beginning and 294.6 MB in the end (delta: 91.8 MB). Free memory was 99.7 MB in the beginning and 245.3 MB in the end (delta: -145.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 01:15:19,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 727.13 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 99.8 MB in the beginning and 163.6 MB in the end (delta: -63.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.88 ms. Allocated memory is still 202.9 MB. Free memory was 163.6 MB in the beginning and 160.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 773.94 ms. Allocated memory is still 202.9 MB. Free memory was 160.2 MB in the beginning and 99.7 MB in the end (delta: 60.6 MB). Peak memory consumption was 60.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5274.84 ms. Allocated memory was 202.9 MB in the beginning and 294.6 MB in the end (delta: 91.8 MB). Free memory was 99.7 MB in the beginning and 245.3 MB in the end (delta: -145.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 11 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 658]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L654] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; VAL [\old(mutexes)=null, \old(mutexes)=null, mutexes={3:0}] [L681] CALL foo() VAL [mutexes={3:0}] [L670] FCALL ldv_initialize() VAL [mutexes={3:0}] [L671] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={3:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={-2:0}, mutexes={3:0}, ptr={-2:0}, size=8] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={3:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={3:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={-2:0}, mutexes={3:0}, ptr={-2:0}, size=8] [L567] return ptr; VAL [\old(size)=8, \result={-2:0}, malloc(size)={-2:0}, mutexes={3:0}, ptr={-2:0}, size=8] [L671] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-2:0}, mutexes={3:0}] [L671] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L672] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={3:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={1:0}, mutexes={3:0}, ptr={1:0}, size=8] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={3:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={3:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={1:0}, mutexes={3:0}, ptr={1:0}, size=8] [L567] return ptr; VAL [\old(size)=8, \result={1:0}, malloc(size)={1:0}, mutexes={3:0}, ptr={1:0}, size=8] [L672] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={1:0}, m1={-2:0}, mutexes={3:0}] [L672] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L673] CALL mutex_lock(m1) VAL [m={-2:0}, mutexes={3:0}] [L658] CALL ldv_is_in_set(m, &mutexes) VAL [e={-2:0}, mutexes={3:0}, s={3:0}] [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={3:0}, e={-2:0}, e={-2:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L644] COND FALSE !(&m->list != (s)) VAL [__mptr={3:0}, e={-2:0}, e={-2:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L649] return 0; VAL [\result=0, __mptr={3:0}, e={-2:0}, e={-2:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L658] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=0, m={-2:0}, m={-2:0}, mutexes={3:0}] [L658] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L659] CALL ldv_set_add(m, &mutexes) VAL [mutexes={3:0}, new={-2:0}, s={3:0}] [L625] CALL, EXPR ldv_is_in_set(new, s) VAL [e={-2:0}, mutexes={3:0}, s={3:0}] [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={3:0}, e={-2:0}, e={-2:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L644] COND FALSE !(&m->list != (s)) VAL [__mptr={3:0}, e={-2:0}, e={-2:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L649] return 0; VAL [\result=0, __mptr={3:0}, e={-2:0}, e={-2:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L625] RET, EXPR ldv_is_in_set(new, s) VAL [ldv_is_in_set(new, s)=0, mutexes={3:0}, new={-2:0}, new={-2:0}, s={3:0}, s={3:0}] [L625] COND TRUE !ldv_is_in_set(new, s) [L626] struct ldv_list_element *le; VAL [mutexes={3:0}, new={-2:0}, new={-2:0}, s={3:0}, s={3:0}] [L627] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, mutexes={3:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=12, malloc(size)={-3:0}, mutexes={3:0}, ptr={-3:0}, size=12] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={3:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={3:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=12, malloc(size)={-3:0}, mutexes={3:0}, ptr={-3:0}, size=12] [L567] return ptr; VAL [\old(size)=12, \result={-3:0}, malloc(size)={-3:0}, mutexes={3:0}, ptr={-3:0}, size=12] [L627] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [ldv_successful_malloc(sizeof(struct ldv_list_element))={-3:0}, mutexes={3:0}, new={-2:0}, new={-2:0}, s={3:0}, s={3:0}] [L627] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L628] le->e = new VAL [le={-3:0}, mutexes={3:0}, new={-2:0}, new={-2:0}, s={3:0}, s={3:0}] [L629] CALL ldv_list_add(&le->list, s) VAL [head={3:0}, mutexes={3:0}, new={-3:4}] [L597] EXPR head->next VAL [head={3:0}, head={3:0}, head->next={3:0}, mutexes={3:0}, new={-3:4}, new={-3:4}] [L597] CALL __ldv_list_add(new, head, head->next) VAL [mutexes={3:0}, new={-3:4}, next={3:0}, prev={3:0}] [L585] next->prev = new [L586] new->next = next [L587] new->prev = prev [L588] prev->next = new VAL [mutexes={3:0}, new={-3:4}, new={-3:4}, next={3:0}, next={3:0}, prev={3:0}, prev={3:0}] [L597] RET __ldv_list_add(new, head, head->next) VAL [head={3:0}, head={3:0}, head->next={3:0}, mutexes={3:0}, new={-3:4}, new={-3:4}] [L629] RET ldv_list_add(&le->list, s) VAL [le={-3:0}, mutexes={3:0}, new={-2:0}, new={-2:0}, s={3:0}, s={3:0}] [L659] RET ldv_set_add(m, &mutexes) VAL [m={-2:0}, m={-2:0}, mutexes={3:0}] [L673] RET mutex_lock(m1) VAL [m1={-2:0}, m2={1:0}, mutexes={3:0}] [L674] CALL mutex_lock(m1) VAL [m={-2:0}, mutexes={3:0}] [L658] CALL ldv_is_in_set(m, &mutexes) VAL [e={-2:0}, mutexes={3:0}, s={3:0}] [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={-3:4}, e={-2:0}, e={-2:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L644] COND TRUE &m->list != (s) [L645] EXPR m->e VAL [__mptr={-3:4}, e={-2:0}, e={-2:0}, m={-3:0}, m->e={-2:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L645] COND TRUE m->e == e [L646] return 1; VAL [\result=1, __mptr={-3:4}, e={-2:0}, e={-2:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L658] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=1, m={-2:0}, m={-2:0}, mutexes={3:0}] [L658] COND TRUE ldv_is_in_set(m, &mutexes) [L658] __VERIFIER_error() VAL [m={-2:0}, m={-2:0}, mutexes={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 25 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 600 SDtfs, 271 SDslu, 863 SDs, 0 SdLazy, 825 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 90 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 392 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 301 ConstructedInterpolants, 0 QuantifiedInterpolants, 130350 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1194 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 165/165 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...