/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 NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -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 16:26:59,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:26:59,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:26:59,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:26:59,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:26:59,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:26:59,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:26:59,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:26:59,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:26:59,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:26:59,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:26:59,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:26:59,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:26:59,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:26:59,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:26:59,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:26:59,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:26:59,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:26:59,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:26:59,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:26:59,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:26:59,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:26:59,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:26:59,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:26:59,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:26:59,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:26:59,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:26:59,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:26:59,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:26:59,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:26:59,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:26:59,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:26:59,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:26:59,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:26:59,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:26:59,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:26:59,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:26:59,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:26:59,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:26:59,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:26:59,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:26:59,316 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 16:26:59,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:26:59,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:26:59,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:26:59,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:26:59,338 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:26:59,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:26:59,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:26:59,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:26:59,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:26:59,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:26:59,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:26:59,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:26:59,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:26:59,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:26:59,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:26:59,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:26:59,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:26:59,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:26:59,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:26:59,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:26:59,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:26:59,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:26:59,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:26:59,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:26:59,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:26:59,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:26:59,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:26:59,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:26:59,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:26:59,347 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 -> NUM_VARIABLES 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 -> 2 [2020-07-21 16:26:59,718 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:26:59,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:26:59,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:26:59,747 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:26:59,747 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:26:59,748 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-21 16:26:59,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cd51ec28/711a0b6024444dc797b4f33bc64df444/FLAG95b8150c7 [2020-07-21 16:27:00,415 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:27:00,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-21 16:27:00,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cd51ec28/711a0b6024444dc797b4f33bc64df444/FLAG95b8150c7 [2020-07-21 16:27:00,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cd51ec28/711a0b6024444dc797b4f33bc64df444 [2020-07-21 16:27:00,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:27:00,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:27:00,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:27:00,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:27:00,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:27:00,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:27:00" (1/1) ... [2020-07-21 16:27:00,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700940ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:00, skipping insertion in model container [2020-07-21 16:27:00,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:27:00" (1/1) ... [2020-07-21 16:27:00,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:27:00,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:27:01,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:27:01,293 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:27:01,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:27:01,468 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:27:01,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:01 WrapperNode [2020-07-21 16:27:01,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:27:01,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:27:01,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:27:01,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:27:01,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:01" (1/1) ... [2020-07-21 16:27:01,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:01" (1/1) ... [2020-07-21 16:27:01,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:01" (1/1) ... [2020-07-21 16:27:01,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:01" (1/1) ... [2020-07-21 16:27:01,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:01" (1/1) ... [2020-07-21 16:27:01,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:01" (1/1) ... [2020-07-21 16:27:01,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:01" (1/1) ... [2020-07-21 16:27:01,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:27:01,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:27:01,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:27:01,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:27:01,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:01" (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 16:27:01,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:27:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:27:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-21 16:27:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-21 16:27:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 16:27:01,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-21 16:27:01,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-07-21 16:27:01,637 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-07-21 16:27:01,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-07-21 16:27:01,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-07-21 16:27:01,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-07-21 16:27:01,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-07-21 16:27:01,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-07-21 16:27:01,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-07-21 16:27:01,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-07-21 16:27:01,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-07-21 16:27:01,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-07-21 16:27:01,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-07-21 16:27:01,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-07-21 16:27:01,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-21 16:27:01,640 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-21 16:27:01,640 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-21 16:27:01,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-21 16:27:01,640 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-21 16:27:01,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:27:01,641 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-21 16:27:01,641 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-21 16:27:01,641 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 16:27:01,641 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 16:27:01,641 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 16:27:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 16:27:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 16:27:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 16:27:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 16:27:01,642 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 16:27:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 16:27:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 16:27:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 16:27:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 16:27:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 16:27:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 16:27:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 16:27:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 16:27:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 16:27:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 16:27:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 16:27:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 16:27:01,644 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 16:27:01,645 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 16:27:01,645 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 16:27:01,645 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 16:27:01,645 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 16:27:01,645 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 16:27:01,645 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 16:27:01,645 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 16:27:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 16:27:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 16:27:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 16:27:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 16:27:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 16:27:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 16:27:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 16:27:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 16:27:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 16:27:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 16:27:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 16:27:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 16:27:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 16:27:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 16:27:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 16:27:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 16:27:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 16:27:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 16:27:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 16:27:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 16:27:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 16:27:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 16:27:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:27:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 16:27:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 16:27:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 16:27:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 16:27:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 16:27:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 16:27:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 16:27:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:27:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 16:27:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 16:27:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 16:27:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 16:27:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 16:27:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 16:27:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 16:27:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 16:27:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 16:27:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 16:27:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 16:27:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 16:27:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 16:27:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 16:27:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 16:27:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 16:27:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 16:27:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 16:27:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 16:27:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 16:27:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 16:27:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 16:27:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 16:27:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 16:27:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 16:27:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 16:27:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 16:27:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 16:27:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 16:27:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 16:27:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 16:27:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 16:27:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 16:27:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 16:27:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 16:27:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 16:27:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 16:27:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 16:27:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 16:27:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 16:27:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 16:27:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:27:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 16:27:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:27:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-21 16:27:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:27:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-07-21 16:27:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-07-21 16:27:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 16:27:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-07-21 16:27:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-07-21 16:27:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-07-21 16:27:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 16:27:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-07-21 16:27:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-07-21 16:27:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-07-21 16:27:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-07-21 16:27:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-07-21 16:27:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-07-21 16:27:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-07-21 16:27:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-07-21 16:27:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:27:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-21 16:27:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-21 16:27:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-21 16:27:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-21 16:27:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-21 16:27:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:27:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:27:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 16:27:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 16:27:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:27:02,346 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:27:02,347 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 16:27:02,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:27:02 BoogieIcfgContainer [2020-07-21 16:27:02,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:27:02,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:27:02,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:27:02,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:27:02,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:27:00" (1/3) ... [2020-07-21 16:27:02,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdbe08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:27:02, skipping insertion in model container [2020-07-21 16:27:02,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:27:01" (2/3) ... [2020-07-21 16:27:02,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdbe08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:27:02, skipping insertion in model container [2020-07-21 16:27:02,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:27:02" (3/3) ... [2020-07-21 16:27:02,364 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-07-21 16:27:02,375 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:27:02,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-21 16:27:02,400 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-21 16:27:02,427 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:27:02,427 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:27:02,428 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:27:02,428 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:27:02,428 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:27:02,428 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:27:02,428 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:27:02,429 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:27:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-07-21 16:27:02,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 16:27:02,461 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:27:02,463 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 16:27:02,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:27:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:27:02,471 INFO L82 PathProgramCache]: Analyzing trace with hash -326397870, now seen corresponding path program 1 times [2020-07-21 16:27:02,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:27:02,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61968991] [2020-07-21 16:27:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:27:02,773 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:27:02,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:27:02,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:27:02,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:27:02,829 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 16:27:02,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:27:02,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61968991] [2020-07-21 16:27:02,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:27:02,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:27:02,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988157398] [2020-07-21 16:27:02,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:27:02,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:27:02,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:27:02,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:27:02,861 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 2 states. [2020-07-21 16:27:02,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:27:02,932 INFO L93 Difference]: Finished difference Result 204 states and 249 transitions. [2020-07-21 16:27:02,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:27:02,934 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2020-07-21 16:27:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:27:02,950 INFO L225 Difference]: With dead ends: 204 [2020-07-21 16:27:02,950 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 16:27:02,959 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 16:27:02,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 16:27:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-21 16:27:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 16:27:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-07-21 16:27:03,016 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2020-07-21 16:27:03,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:27:03,017 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-07-21 16:27:03,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:27:03,017 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-07-21 16:27:03,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 16:27:03,020 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:27:03,020 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 16:27:03,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:27:03,235 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:27:03,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:27:03,237 INFO L82 PathProgramCache]: Analyzing trace with hash -934339182, now seen corresponding path program 1 times [2020-07-21 16:27:03,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:27:03,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174365729] [2020-07-21 16:27:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:27:03,383 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:27:03,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:27:03,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:27:03,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:27:03,422 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 16:27:03,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:27:03,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174365729] [2020-07-21 16:27:03,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:27:03,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:27:03,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020332277] [2020-07-21 16:27:03,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:27:03,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:27:03,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:27:03,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:27:03,426 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 4 states. [2020-07-21 16:27:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:27:03,462 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2020-07-21 16:27:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:27:03,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-07-21 16:27:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:27:03,469 INFO L225 Difference]: With dead ends: 104 [2020-07-21 16:27:03,469 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 16:27:03,470 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 16:27:03,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 16:27:03,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-07-21 16:27:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-21 16:27:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-07-21 16:27:03,490 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2020-07-21 16:27:03,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:27:03,491 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-07-21 16:27:03,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:27:03,492 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-07-21 16:27:03,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 16:27:03,494 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:27:03,494 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 16:27:03,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:27:03,708 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:27:03,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:27:03,712 INFO L82 PathProgramCache]: Analyzing trace with hash 640264123, now seen corresponding path program 1 times [2020-07-21 16:27:03,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:27:03,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120227946] [2020-07-21 16:27:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:27:03,900 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:27:03,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:27:03,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-21 16:27:03,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:27:03,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:27:03,983 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-07-21 16:27:03,984 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:27:04,013 INFO L624 ElimStorePlain]: treesize reduction 4, result has 85.7 percent of original size [2020-07-21 16:27:04,014 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:27:04,015 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:24 [2020-07-21 16:27:04,136 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:27:04,139 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:27:04,141 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:27:04,164 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 16:27:04,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:27:04,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120227946] [2020-07-21 16:27:04,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:27:04,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 16:27:04,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957994100] [2020-07-21 16:27:04,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:27:04,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:27:04,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:27:04,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:27:04,167 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 6 states. [2020-07-21 16:27:04,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:27:04,688 INFO L93 Difference]: Finished difference Result 267 states and 315 transitions. [2020-07-21 16:27:04,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:27:04,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-07-21 16:27:04,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:27:04,693 INFO L225 Difference]: With dead ends: 267 [2020-07-21 16:27:04,693 INFO L226 Difference]: Without dead ends: 179 [2020-07-21 16:27:04,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 16:27:04,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-07-21 16:27:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 152. [2020-07-21 16:27:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-07-21 16:27:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-07-21 16:27:04,719 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 42 [2020-07-21 16:27:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:27:04,720 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-07-21 16:27:04,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:27:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-07-21 16:27:04,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-21 16:27:04,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:27:04,724 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 16:27:04,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:27:04,938 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:27:04,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:27:04,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1149911364, now seen corresponding path program 1 times [2020-07-21 16:27:04,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:27:04,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237280688] [2020-07-21 16:27:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:27:05,123 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:27:05,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:27:05,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:27:05,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:27:05,159 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 16:27:05,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:27:05,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237280688] [2020-07-21 16:27:05,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:27:05,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:27:05,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824594153] [2020-07-21 16:27:05,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:27:05,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:27:05,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:27:05,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:27:05,162 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 4 states. [2020-07-21 16:27:05,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:27:05,187 INFO L93 Difference]: Finished difference Result 272 states and 324 transitions. [2020-07-21 16:27:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:27:05,187 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-07-21 16:27:05,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:27:05,190 INFO L225 Difference]: With dead ends: 272 [2020-07-21 16:27:05,190 INFO L226 Difference]: Without dead ends: 158 [2020-07-21 16:27:05,192 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 16:27:05,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-21 16:27:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-07-21 16:27:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-21 16:27:05,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 186 transitions. [2020-07-21 16:27:05,211 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 186 transitions. Word has length 90 [2020-07-21 16:27:05,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:27:05,212 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 186 transitions. [2020-07-21 16:27:05,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:27:05,213 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 186 transitions. [2020-07-21 16:27:05,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-21 16:27:05,216 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:27:05,216 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 16:27:05,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:27:05,431 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:27:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:27:05,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1610969230, now seen corresponding path program 1 times [2020-07-21 16:27:05,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:27:05,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116171520] [2020-07-21 16:27:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:27:05,574 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:27:05,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:27:05,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-21 16:27:05,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:27:05,646 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 16:27:05,647 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:27:05,656 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:27:05,660 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 16:27:05,660 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:27:05,666 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:27:05,666 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:27:05,667 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2020-07-21 16:27:05,752 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 16:27:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-21 16:27:05,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:27:06,410 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 16:27:06,416 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 8 treesize of output 4 [2020-07-21 16:27:06,417 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:27:06,422 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:27:06,434 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 8 treesize of output 4 [2020-07-21 16:27:06,435 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:27:06,440 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:27:06,440 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:27:06,441 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2020-07-21 16:27:06,609 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:27:06,672 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:27:06,680 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 16:27:06,681 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:27:06,691 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2020-07-21 16:27:06,691 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:27:06,695 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:27:06,695 INFO L512 ElimStorePlain]: Eliminatee |#memory_$Pointer$.offset| vanished before elimination [2020-07-21 16:27:06,695 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:27:06,696 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:1 [2020-07-21 16:27:06,753 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-21 16:27:06,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116171520] [2020-07-21 16:27:06,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:27:06,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-07-21 16:27:06,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285956745] [2020-07-21 16:27:06,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-21 16:27:06,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:27:06,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-21 16:27:06,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-07-21 16:27:06,757 INFO L87 Difference]: Start difference. First operand 158 states and 186 transitions. Second operand 18 states. [2020-07-21 16:27:08,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:27:08,401 INFO L93 Difference]: Finished difference Result 403 states and 485 transitions. [2020-07-21 16:27:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 16:27:08,401 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2020-07-21 16:27:08,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:27:08,406 INFO L225 Difference]: With dead ends: 403 [2020-07-21 16:27:08,406 INFO L226 Difference]: Without dead ends: 220 [2020-07-21 16:27:08,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=932, Unknown=0, NotChecked=0, Total=1190 [2020-07-21 16:27:08,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-07-21 16:27:08,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 184. [2020-07-21 16:27:08,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-07-21 16:27:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 215 transitions. [2020-07-21 16:27:08,439 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 215 transitions. Word has length 90 [2020-07-21 16:27:08,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:27:08,440 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 215 transitions. [2020-07-21 16:27:08,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-21 16:27:08,440 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 215 transitions. [2020-07-21 16:27:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 16:27:08,442 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:27:08,442 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 16:27:08,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:27:08,649 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:27:08,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:27:08,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1106436747, now seen corresponding path program 1 times [2020-07-21 16:27:08,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:27:08,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985285334] [2020-07-21 16:27:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:27:08,961 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:27:08,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:27:08,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:27:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:27:09,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:27:09,064 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:27:09,064 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:27:09,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:27:09,346 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-21 16:27:09,347 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 3 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-21 16:27:09,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:27:09 BoogieIcfgContainer [2020-07-21 16:27:09,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:27:09,383 INFO L168 Benchmark]: Toolchain (without parser) took 8675.19 ms. Allocated memory was 145.2 MB in the beginning and 318.8 MB in the end (delta: 173.5 MB). Free memory was 101.9 MB in the beginning and 183.4 MB in the end (delta: -81.4 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:27:09,383 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 16:27:09,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.09 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.5 MB in the beginning and 165.0 MB in the end (delta: -63.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-07-21 16:27:09,385 INFO L168 Benchmark]: Boogie Preprocessor took 99.58 ms. Allocated memory is still 203.4 MB. Free memory was 165.0 MB in the beginning and 161.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:27:09,386 INFO L168 Benchmark]: RCFGBuilder took 782.02 ms. Allocated memory is still 203.4 MB. Free memory was 161.5 MB in the beginning and 100.7 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:27:09,386 INFO L168 Benchmark]: TraceAbstraction took 7027.13 ms. Allocated memory was 203.4 MB in the beginning and 318.8 MB in the end (delta: 115.3 MB). Free memory was 100.7 MB in the beginning and 183.4 MB in the end (delta: -82.7 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2020-07-21 16:27:09,392 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 759.09 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 101.5 MB in the beginning and 165.0 MB in the end (delta: -63.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.58 ms. Allocated memory is still 203.4 MB. Free memory was 165.0 MB in the beginning and 161.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 782.02 ms. Allocated memory is still 203.4 MB. Free memory was 161.5 MB in the beginning and 100.7 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7027.13 ms. Allocated memory was 203.4 MB in the beginning and 318.8 MB in the end (delta: 115.3 MB). Free memory was 100.7 MB in the beginning and 183.4 MB in the end (delta: -82.7 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 5 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 3 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={7195:0}] [L681] CALL foo() VAL [mutexes={7195:0}] [L670] FCALL ldv_initialize() VAL [mutexes={7195:0}] [L671] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={7195:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={7193:0}, mutexes={7195:0}, ptr={7193:0}, size=8] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={7195:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={7195:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={7193:0}, mutexes={7195:0}, ptr={7193:0}, size=8] [L567] return ptr; VAL [\old(size)=8, \result={7193:0}, malloc(size)={7193:0}, mutexes={7195:0}, ptr={7193:0}, size=8] [L671] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={7193:0}, mutexes={7195:0}] [L671] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L672] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={7195:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={-1:0}, mutexes={7195:0}, ptr={-1:0}, size=8] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={7195:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={7195:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={-1:0}, mutexes={7195:0}, ptr={-1:0}, size=8] [L567] return ptr; VAL [\old(size)=8, \result={-1:0}, malloc(size)={-1:0}, mutexes={7195:0}, ptr={-1:0}, size=8] [L672] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-1:0}, m1={7193:0}, mutexes={7195:0}] [L672] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L673] CALL mutex_lock(m1) VAL [m={7193:0}, mutexes={7195:0}] [L658] CALL ldv_is_in_set(m, &mutexes) VAL [e={7193:0}, mutexes={7195:0}, s={7195:0}] [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={7195:0}, e={7193:0}, e={7193:0}, m={7195:-4}, mutexes={7195:0}, s={7195:0}, s={7195:0}] [L644] COND FALSE !(&m->list != (s)) VAL [__mptr={7195:0}, e={7193:0}, e={7193:0}, m={7195:-4}, mutexes={7195:0}, s={7195:0}, s={7195:0}] [L649] return 0; VAL [\result=0, __mptr={7195:0}, e={7193:0}, e={7193:0}, m={7195:-4}, mutexes={7195:0}, s={7195:0}, s={7195:0}] [L658] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=0, m={7193:0}, m={7193:0}, mutexes={7195:0}] [L658] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L659] CALL ldv_set_add(m, &mutexes) VAL [mutexes={7195:0}, new={7193:0}, s={7195:0}] [L625] CALL, EXPR ldv_is_in_set(new, s) VAL [e={7193:0}, mutexes={7195:0}, s={7195:0}] [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={7195:0}, e={7193:0}, e={7193:0}, m={7195:-4}, mutexes={7195:0}, s={7195:0}, s={7195:0}] [L644] COND FALSE !(&m->list != (s)) VAL [__mptr={7195:0}, e={7193:0}, e={7193:0}, m={7195:-4}, mutexes={7195:0}, s={7195:0}, s={7195:0}] [L649] return 0; VAL [\result=0, __mptr={7195:0}, e={7193:0}, e={7193:0}, m={7195:-4}, mutexes={7195:0}, s={7195:0}, s={7195:0}] [L625] RET, EXPR ldv_is_in_set(new, s) VAL [ldv_is_in_set(new, s)=0, mutexes={7195:0}, new={7193:0}, new={7193:0}, s={7195:0}, s={7195:0}] [L625] COND TRUE !ldv_is_in_set(new, s) [L626] struct ldv_list_element *le; VAL [mutexes={7195:0}, new={7193:0}, new={7193:0}, s={7195:0}, s={7195:0}] [L627] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, mutexes={7195:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=12, malloc(size)={-2:0}, mutexes={7195:0}, ptr={-2:0}, size=12] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={7195:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={7195:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=12, malloc(size)={-2:0}, mutexes={7195:0}, ptr={-2:0}, size=12] [L567] return ptr; VAL [\old(size)=12, \result={-2:0}, malloc(size)={-2:0}, mutexes={7195:0}, ptr={-2:0}, size=12] [L627] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [ldv_successful_malloc(sizeof(struct ldv_list_element))={-2:0}, mutexes={7195:0}, new={7193:0}, new={7193:0}, s={7195:0}, s={7195:0}] [L627] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L628] le->e = new VAL [le={-2:0}, mutexes={7195:0}, new={7193:0}, new={7193:0}, s={7195:0}, s={7195:0}] [L629] CALL ldv_list_add(&le->list, s) VAL [head={7195:0}, mutexes={7195:0}, new={-2:4}] [L597] EXPR head->next VAL [head={7195:0}, head={7195:0}, head->next={7195:0}, mutexes={7195:0}, new={-2:4}, new={-2:4}] [L597] CALL __ldv_list_add(new, head, head->next) VAL [mutexes={7195:0}, new={-2:4}, next={7195:0}, prev={7195:0}] [L585] next->prev = new [L586] new->next = next [L587] new->prev = prev [L588] prev->next = new VAL [mutexes={7195:0}, new={-2:4}, new={-2:4}, next={7195:0}, next={7195:0}, prev={7195:0}, prev={7195:0}] [L597] RET __ldv_list_add(new, head, head->next) VAL [head={7195:0}, head={7195:0}, head->next={7195:0}, mutexes={7195:0}, new={-2:4}, new={-2:4}] [L629] RET ldv_list_add(&le->list, s) VAL [le={-2:0}, mutexes={7195:0}, new={7193:0}, new={7193:0}, s={7195:0}, s={7195:0}] [L659] RET ldv_set_add(m, &mutexes) VAL [m={7193:0}, m={7193:0}, mutexes={7195:0}] [L673] RET mutex_lock(m1) VAL [m1={7193:0}, m2={-1:0}, mutexes={7195:0}] [L674] CALL mutex_lock(m1) VAL [m={7193:0}, mutexes={7195:0}] [L658] CALL ldv_is_in_set(m, &mutexes) VAL [e={7193:0}, mutexes={7195:0}, s={7195:0}] [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={-2:4}, e={7193:0}, e={7193:0}, m={-2:0}, mutexes={7195:0}, s={7195:0}, s={7195:0}] [L644] COND TRUE &m->list != (s) [L645] EXPR m->e VAL [__mptr={-2:4}, e={7193:0}, e={7193:0}, m={-2:0}, m->e={7193:0}, mutexes={7195:0}, s={7195:0}, s={7195:0}] [L645] COND TRUE m->e == e [L646] return 1; VAL [\result=1, __mptr={-2:4}, e={7193:0}, e={7193:0}, m={-2:0}, mutexes={7195:0}, s={7195:0}, s={7195:0}] [L658] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=1, m={7193:0}, m={7193:0}, mutexes={7195:0}] [L658] COND TRUE ldv_is_in_set(m, &mutexes) [L658] __VERIFIER_error() VAL [m={7193:0}, m={7193:0}, mutexes={7195:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 25 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.8s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 568 SDtfs, 464 SDslu, 1003 SDs, 0 SdLazy, 870 SolverSat, 191 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 424 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred 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, 63 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 392 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 133112 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1433 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 194/231 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...