/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 22:45:35,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:45:35,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:45:35,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:45:35,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:45:35,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:45:35,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:45:35,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:45:35,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:45:35,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:45:35,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:45:35,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:45:35,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:45:35,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:45:35,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:45:35,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:45:35,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:45:35,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:45:35,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:45:35,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:45:35,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:45:35,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:45:35,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:45:35,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:45:35,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 22:45:35,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 22:45:35,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 22:45:35,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 22:45:35,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 22:45:35,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 22:45:35,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 22:45:35,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 22:45:35,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 22:45:35,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 22:45:35,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 22:45:35,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 22:45:35,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 22:45:35,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 22:45:35,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:45:35,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:45:35,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:45:35,192 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 22:45:35,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:45:35,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:45:35,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:45:35,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:45:35,212 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:45:35,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:45:35,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:45:35,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:45:35,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:45:35,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:45:35,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:45:35,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:45:35,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:45:35,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:45:35,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:45:35,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:45:35,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:45:35,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:45:35,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:45:35,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:45:35,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:45:35,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:45:35,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:45:35,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:45:35,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:45:35,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:45:35,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:35,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:45:35,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:45:35,218 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 22:45:35,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:45:35,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:45:35,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:45:35,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:45:35,633 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:45:35,634 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-21 22:45:35,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382fe2665/1141d57fb2014fe1aa550517ac2df235/FLAG5afd15699 [2020-07-21 22:45:36,203 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:45:36,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-21 22:45:36,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382fe2665/1141d57fb2014fe1aa550517ac2df235/FLAG5afd15699 [2020-07-21 22:45:36,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/382fe2665/1141d57fb2014fe1aa550517ac2df235 [2020-07-21 22:45:36,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:45:36,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:45:36,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:45:36,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:45:36,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:45:36,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:45:36" (1/1) ... [2020-07-21 22:45:36,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a49fa7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:36, skipping insertion in model container [2020-07-21 22:45:36,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:45:36" (1/1) ... [2020-07-21 22:45:36,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:45:36,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:45:37,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:45:37,083 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:45:37,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:45:37,269 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:45:37,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:37 WrapperNode [2020-07-21 22:45:37,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:45:37,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:45:37,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:45:37,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:45:37,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:37" (1/1) ... [2020-07-21 22:45:37,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:37" (1/1) ... [2020-07-21 22:45:37,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:37" (1/1) ... [2020-07-21 22:45:37,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:37" (1/1) ... [2020-07-21 22:45:37,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:37" (1/1) ... [2020-07-21 22:45:37,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:37" (1/1) ... [2020-07-21 22:45:37,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:37" (1/1) ... [2020-07-21 22:45:37,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:45:37,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:45:37,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:45:37,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:45:37,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:37" (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 22:45:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:45:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:45:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-21 22:45:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-21 22:45:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 22:45:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-21 22:45:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-07-21 22:45:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-07-21 22:45:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-07-21 22:45:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-07-21 22:45:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-07-21 22:45:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-07-21 22:45:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-07-21 22:45:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-07-21 22:45:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-07-21 22:45:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-07-21 22:45:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-07-21 22:45:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-07-21 22:45:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-07-21 22:45:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-21 22:45:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-21 22:45:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-21 22:45:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-21 22:45:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-21 22:45:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:45:37,450 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-21 22:45:37,450 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-21 22:45:37,450 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 22:45:37,450 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 22:45:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 22:45:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 22:45:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 22:45:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 22:45:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 22:45:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 22:45:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 22:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 22:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 22:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 22:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 22:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 22:45:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 22:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 22:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 22:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 22:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 22:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 22:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 22:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 22:45:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 22:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 22:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 22:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 22:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 22:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 22:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 22:45:37,454 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 22:45:37,455 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 22:45:37,456 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 22:45:37,457 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 22:45:37,458 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 22:45:37,459 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 22:45:37,460 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 22:45:37,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 22:45:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 22:45:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 22:45:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 22:45:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 22:45:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 22:45:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 22:45:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 22:45:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 22:45:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 22:45:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 22:45:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 22:45:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:45:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 22:45:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:45:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-21 22:45:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 22:45:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-07-21 22:45:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-07-21 22:45:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 22:45:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-07-21 22:45:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-07-21 22:45:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-07-21 22:45:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 22:45:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-07-21 22:45:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-07-21 22:45:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-07-21 22:45:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-07-21 22:45:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-07-21 22:45:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-07-21 22:45:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-07-21 22:45:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-07-21 22:45:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:45:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-21 22:45:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-21 22:45:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-21 22:45:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-21 22:45:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-21 22:45:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:45:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:45:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:45:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 22:45:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:45:38,193 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:45:38,194 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 22:45:38,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:45:38 BoogieIcfgContainer [2020-07-21 22:45:38,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:45:38,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:45:38,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:45:38,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:45:38,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:45:36" (1/3) ... [2020-07-21 22:45:38,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62541b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:45:38, skipping insertion in model container [2020-07-21 22:45:38,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:45:37" (2/3) ... [2020-07-21 22:45:38,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62541b02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:45:38, skipping insertion in model container [2020-07-21 22:45:38,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:45:38" (3/3) ... [2020-07-21 22:45:38,210 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-07-21 22:45:38,222 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:45:38,230 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-21 22:45:38,245 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-21 22:45:38,272 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:45:38,273 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:45:38,273 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:45:38,273 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:45:38,273 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:45:38,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:45:38,274 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:45:38,274 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:45:38,297 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-07-21 22:45:38,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 22:45:38,305 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:38,306 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 22:45:38,307 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:38,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:38,314 INFO L82 PathProgramCache]: Analyzing trace with hash -326397870, now seen corresponding path program 1 times [2020-07-21 22:45:38,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:38,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168292467] [2020-07-21 22:45:38,324 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 22:45:38,585 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:45:38,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:38,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:45:38,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:38,642 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 22:45:38,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:45:38,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168292467] [2020-07-21 22:45:38,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:45:38,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:45:38,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893955810] [2020-07-21 22:45:38,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:45:38,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:38,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:45:38,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:45:38,671 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 2 states. [2020-07-21 22:45:38,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:38,746 INFO L93 Difference]: Finished difference Result 204 states and 249 transitions. [2020-07-21 22:45:38,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:45:38,748 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2020-07-21 22:45:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:38,759 INFO L225 Difference]: With dead ends: 204 [2020-07-21 22:45:38,760 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 22:45:38,764 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 22:45:38,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 22:45:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-21 22:45:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 22:45:38,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-07-21 22:45:38,818 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2020-07-21 22:45:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:38,819 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-07-21 22:45:38,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:45:38,819 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-07-21 22:45:38,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 22:45:38,822 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:38,822 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 22:45:39,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:39,039 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:39,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:39,039 INFO L82 PathProgramCache]: Analyzing trace with hash -934339182, now seen corresponding path program 1 times [2020-07-21 22:45:39,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:39,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53549658] [2020-07-21 22:45:39,041 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 22:45:39,216 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:45:39,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:39,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 22:45:39,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:39,280 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 22:45:39,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:45:39,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53549658] [2020-07-21 22:45:39,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:45:39,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 22:45:39,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083325129] [2020-07-21 22:45:39,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:45:39,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:39,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:45:39,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:45:39,290 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 4 states. [2020-07-21 22:45:39,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:39,334 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2020-07-21 22:45:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:45:39,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-07-21 22:45:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:39,343 INFO L225 Difference]: With dead ends: 104 [2020-07-21 22:45:39,343 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 22:45:39,345 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 22:45:39,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 22:45:39,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-07-21 22:45:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-21 22:45:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-07-21 22:45:39,383 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2020-07-21 22:45:39,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:39,384 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-07-21 22:45:39,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:45:39,384 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-07-21 22:45:39,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 22:45:39,389 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:39,389 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 22:45:39,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:39,604 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:39,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:39,605 INFO L82 PathProgramCache]: Analyzing trace with hash 640264123, now seen corresponding path program 1 times [2020-07-21 22:45:39,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:39,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398798541] [2020-07-21 22:45:39,607 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 22:45:39,827 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:45:39,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:39,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-21 22:45:39,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:39,929 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:45:39,959 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 22:45:39,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:45:39,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398798541] [2020-07-21 22:45:39,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:45:39,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:45:39,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137294145] [2020-07-21 22:45:39,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:45:39,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:39,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:45:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:45:39,962 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 5 states. [2020-07-21 22:45:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:40,254 INFO L93 Difference]: Finished difference Result 267 states and 315 transitions. [2020-07-21 22:45:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:45:40,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-21 22:45:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:40,258 INFO L225 Difference]: With dead ends: 267 [2020-07-21 22:45:40,258 INFO L226 Difference]: Without dead ends: 179 [2020-07-21 22:45:40,260 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 22:45:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-07-21 22:45:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 152. [2020-07-21 22:45:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-07-21 22:45:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-07-21 22:45:40,282 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 42 [2020-07-21 22:45:40,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:40,283 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-07-21 22:45:40,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:45:40,283 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-07-21 22:45:40,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-21 22:45:40,285 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:40,286 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 22:45:40,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:40,501 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:40,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1149911364, now seen corresponding path program 1 times [2020-07-21 22:45:40,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:40,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198048182] [2020-07-21 22:45:40,503 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 22:45:40,655 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:45:40,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:40,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 22:45:40,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:40,698 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 22:45:40,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:45:40,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198048182] [2020-07-21 22:45:40,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:45:40,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 22:45:40,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617327185] [2020-07-21 22:45:40,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:45:40,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:40,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:45:40,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:45:40,701 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 4 states. [2020-07-21 22:45:40,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:40,741 INFO L93 Difference]: Finished difference Result 272 states and 324 transitions. [2020-07-21 22:45:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:45:40,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-07-21 22:45:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:40,744 INFO L225 Difference]: With dead ends: 272 [2020-07-21 22:45:40,744 INFO L226 Difference]: Without dead ends: 158 [2020-07-21 22:45:40,750 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 22:45:40,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-21 22:45:40,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-07-21 22:45:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-21 22:45:40,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 186 transitions. [2020-07-21 22:45:40,783 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 186 transitions. Word has length 90 [2020-07-21 22:45:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:40,784 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 186 transitions. [2020-07-21 22:45:40,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:45:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 186 transitions. [2020-07-21 22:45:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-21 22:45:40,790 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:40,790 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 22:45:40,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:40,992 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:40,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:40,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1610969230, now seen corresponding path program 1 times [2020-07-21 22:45:40,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:40,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1494456217] [2020-07-21 22:45:40,993 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 22:45:41,121 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:45:41,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:45:41,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 22:45:41,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:45:41,171 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_6|], 2=[|v_#memory_$Pointer$.base_BEFORE_CALL_6|]} [2020-07-21 22:45:41,188 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 22:45:41,189 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:41,199 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:41,205 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-07-21 22:45:41,205 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 22:45:41,206 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:41,211 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:41,211 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:45:41,212 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:7 [2020-07-21 22:45:41,313 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:45:41,371 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 22:45:41,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:45:41,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1494456217] [2020-07-21 22:45:41,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:45:41,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 22:45:41,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227616813] [2020-07-21 22:45:41,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 22:45:41,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:45:41,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 22:45:41,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-21 22:45:41,374 INFO L87 Difference]: Start difference. First operand 158 states and 186 transitions. Second operand 9 states. [2020-07-21 22:45:42,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:45:42,652 INFO L93 Difference]: Finished difference Result 356 states and 420 transitions. [2020-07-21 22:45:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 22:45:42,652 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-07-21 22:45:42,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:45:42,656 INFO L225 Difference]: With dead ends: 356 [2020-07-21 22:45:42,656 INFO L226 Difference]: Without dead ends: 224 [2020-07-21 22:45:42,658 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 22:45:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-07-21 22:45:42,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 161. [2020-07-21 22:45:42,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-21 22:45:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-07-21 22:45:42,678 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 90 [2020-07-21 22:45:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:45:42,679 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-07-21 22:45:42,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 22:45:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-07-21 22:45:42,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 22:45:42,681 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:45:42,681 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 22:45:42,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:42,896 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:45:42,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:45:42,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1106436747, now seen corresponding path program 1 times [2020-07-21 22:45:42,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:45:42,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485896944] [2020-07-21 22:45:42,898 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 22:45:43,120 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:45:43,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:45:43,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:45:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:45:43,164 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:45:43,232 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:45:43,233 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:45:43,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:45:43,491 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 22:45:43,492 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 22:45:43,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:45:43 BoogieIcfgContainer [2020-07-21 22:45:43,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:45:43,523 INFO L168 Benchmark]: Toolchain (without parser) took 7013.30 ms. Allocated memory was 140.0 MB in the beginning and 285.2 MB in the end (delta: 145.2 MB). Free memory was 103.9 MB in the beginning and 206.2 MB in the end (delta: -102.3 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:45:43,524 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 22:45:43,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 756.44 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 103.5 MB in the beginning and 163.6 MB in the end (delta: -60.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-07-21 22:45:43,525 INFO L168 Benchmark]: Boogie Preprocessor took 102.94 ms. Allocated memory is still 200.8 MB. Free memory was 163.6 MB in the beginning and 160.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:45:43,526 INFO L168 Benchmark]: RCFGBuilder took 825.76 ms. Allocated memory is still 200.8 MB. Free memory was 159.6 MB in the beginning and 99.4 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:45:43,527 INFO L168 Benchmark]: TraceAbstraction took 5320.80 ms. Allocated memory was 200.8 MB in the beginning and 285.2 MB in the end (delta: 84.4 MB). Free memory was 98.7 MB in the beginning and 206.2 MB in the end (delta: -107.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 22:45:43,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 756.44 ms. Allocated memory was 140.0 MB in the beginning and 200.8 MB in the end (delta: 60.8 MB). Free memory was 103.5 MB in the beginning and 163.6 MB in the end (delta: -60.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.94 ms. Allocated memory is still 200.8 MB. Free memory was 163.6 MB in the beginning and 160.3 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 825.76 ms. Allocated memory is still 200.8 MB. Free memory was 159.6 MB in the beginning and 99.4 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5320.80 ms. Allocated memory was 200.8 MB in the beginning and 285.2 MB in the end (delta: 84.4 MB). Free memory was 98.7 MB in the beginning and 206.2 MB in the end (delta: -107.5 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: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 602 SDtfs, 271 SDslu, 868 SDs, 0 SdLazy, 830 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...