/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:53:21,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:53:21,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:53:21,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 04:53:21,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:53:21,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:53:21,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:53:21,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 04:53:21,292 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:53:21,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:53:21,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:53:21,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:53:21,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:53:21,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:53:21,295 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:53:21,295 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:53:21,295 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:53:21,295 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:53:21,296 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:53:21,296 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:53:21,296 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:53:21,296 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:53:21,296 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:53:21,297 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:53:21,297 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:53:21,297 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:53:21,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:53:21,298 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:53:21,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:53:21,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:53:21,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:53:21,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:53:21,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:53:21,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:53:21,299 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:53:21,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:53:21,299 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:53:21,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:53:21,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:53:21,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:53:21,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:53:21,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:53:21,300 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:53:21,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:53:21,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:53:21,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:53:21,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:53:21,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:53:21,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:53:21,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:53:21,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:53:21,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:53:21,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:53:21,575 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:53:21,576 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:53:21,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2023-04-01 04:53:22,718 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:53:22,972 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:53:22,973 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2023-04-01 04:53:22,985 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e420c3784/365dc635494e43598e07ecec5b544957/FLAGe7e0cc655 [2023-04-01 04:53:23,289 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e420c3784/365dc635494e43598e07ecec5b544957 [2023-04-01 04:53:23,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:53:23,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:53:23,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:53:23,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:53:23,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:53:23,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613fd21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23, skipping insertion in model container [2023-04-01 04:53:23,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:53:23,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:53:23,614 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25842,25855] [2023-04-01 04:53:23,622 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25967,25980] [2023-04-01 04:53:23,626 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[26082,26095] [2023-04-01 04:53:23,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:53:23,645 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:53:23,704 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25842,25855] [2023-04-01 04:53:23,707 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25967,25980] [2023-04-01 04:53:23,708 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[26082,26095] [2023-04-01 04:53:23,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:53:23,743 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:53:23,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23 WrapperNode [2023-04-01 04:53:23,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:53:23,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:53:23,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:53:23,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:53:23,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,831 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:53:23,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:53:23,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:53:23,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:53:23,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23" (1/1) ... [2023-04-01 04:53:23,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:53:23,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:53:23,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 04:53:23,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 04:53:23,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:53:23,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:53:23,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-01 04:53:23,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-01 04:53:23,919 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:53:23,919 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 04:53:23,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-01 04:53:23,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-04-01 04:53:23,920 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-04-01 04:53:23,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-04-01 04:53:23,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2023-04-01 04:53:23,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-04-01 04:53:23,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2023-04-01 04:53:23,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-04-01 04:53:23,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2023-04-01 04:53:23,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2023-04-01 04:53:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2023-04-01 04:53:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2023-04-01 04:53:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-04-01 04:53:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2023-04-01 04:53:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-01 04:53:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-04-01 04:53:23,922 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-01 04:53:23,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-01 04:53:23,923 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-04-01 04:53:23,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:53:23,923 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-01 04:53:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-01 04:53:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-01 04:53:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-01 04:53:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-01 04:53:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-01 04:53:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-01 04:53:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-01 04:53:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-01 04:53:23,924 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-01 04:53:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-01 04:53:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-01 04:53:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-01 04:53:23,925 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-01 04:53:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-01 04:53:23,926 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-01 04:53:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-01 04:53:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-01 04:53:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-01 04:53:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-01 04:53:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-01 04:53:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-01 04:53:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-01 04:53:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-01 04:53:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-01 04:53:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-01 04:53:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-01 04:53:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-01 04:53:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-01 04:53:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-01 04:53:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-01 04:53:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-01 04:53:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-01 04:53:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-01 04:53:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-01 04:53:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-01 04:53:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-01 04:53:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-01 04:53:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-01 04:53:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-01 04:53:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-01 04:53:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-01 04:53:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-01 04:53:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-01 04:53:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-01 04:53:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-01 04:53:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-01 04:53:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-01 04:53:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-01 04:53:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-01 04:53:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-01 04:53:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-01 04:53:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 04:53:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-01 04:53:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-01 04:53:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 04:53:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-01 04:53:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-01 04:53:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-01 04:53:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-01 04:53:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:53:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-01 04:53:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-01 04:53:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 04:53:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-01 04:53:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-01 04:53:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-01 04:53:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-01 04:53:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-01 04:53:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-01 04:53:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-01 04:53:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-01 04:53:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-01 04:53:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-01 04:53:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-01 04:53:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-01 04:53:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-01 04:53:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-01 04:53:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-01 04:53:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-01 04:53:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-01 04:53:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-01 04:53:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-01 04:53:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-01 04:53:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-01 04:53:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-01 04:53:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-01 04:53:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-01 04:53:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-01 04:53:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-01 04:53:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-01 04:53:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-01 04:53:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-01 04:53:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-01 04:53:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-01 04:53:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-01 04:53:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-01 04:53:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-01 04:53:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-01 04:53:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-01 04:53:23,946 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-01 04:53:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-01 04:53:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:53:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 04:53:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 04:53:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:53:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:53:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 04:53:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 04:53:23,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-01 04:53:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 04:53:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-04-01 04:53:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-04-01 04:53:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 04:53:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-04-01 04:53:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2023-04-01 04:53:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-04-01 04:53:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 04:53:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2023-04-01 04:53:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-04-01 04:53:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2023-04-01 04:53:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2023-04-01 04:53:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2023-04-01 04:53:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2023-04-01 04:53:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-04-01 04:53:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2023-04-01 04:53:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:53:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-01 04:53:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-04-01 04:53:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-01 04:53:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-01 04:53:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-04-01 04:53:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:53:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:53:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:53:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-01 04:53:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:53:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:53:23,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:53:24,209 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:53:24,211 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:53:24,551 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:53:24,611 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:53:24,611 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-01 04:53:24,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:53:24 BoogieIcfgContainer [2023-04-01 04:53:24,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:53:24,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:53:24,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:53:24,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:53:24,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:53:23" (1/3) ... [2023-04-01 04:53:24,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f06eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:53:24, skipping insertion in model container [2023-04-01 04:53:24,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:53:23" (2/3) ... [2023-04-01 04:53:24,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f06eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:53:24, skipping insertion in model container [2023-04-01 04:53:24,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:53:24" (3/3) ... [2023-04-01 04:53:24,633 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2023-04-01 04:53:24,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:53:24,650 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-04-01 04:53:24,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:53:24,722 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49c4ff90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:53:24,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-04-01 04:53:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 52 states have internal predecessors, (59), 23 states have call successors, (23), 18 states have call predecessors, (23), 18 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-01 04:53:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-01 04:53:24,733 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:53:24,734 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 04:53:24,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:53:24,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:53:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1840463953, now seen corresponding path program 1 times [2023-04-01 04:53:24,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:53:24,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771902437] [2023-04-01 04:53:24,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:53:24,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:53:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:53:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 04:53:25,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:53:25,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771902437] [2023-04-01 04:53:25,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771902437] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:53:25,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:53:25,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 04:53:25,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495237608] [2023-04-01 04:53:25,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:53:25,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 04:53:25,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:53:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 04:53:25,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 04:53:25,247 INFO L87 Difference]: Start difference. First operand has 94 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 52 states have internal predecessors, (59), 23 states have call successors, (23), 18 states have call predecessors, (23), 18 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 04:53:25,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:53:25,398 INFO L93 Difference]: Finished difference Result 175 states and 203 transitions. [2023-04-01 04:53:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 04:53:25,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 34 [2023-04-01 04:53:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:53:25,409 INFO L225 Difference]: With dead ends: 175 [2023-04-01 04:53:25,409 INFO L226 Difference]: Without dead ends: 88 [2023-04-01 04:53:25,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 04:53:25,416 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 04:53:25,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 253 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 04:53:25,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-04-01 04:53:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-04-01 04:53:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 23 states have call successors, (23), 18 states have call predecessors, (23), 16 states have return successors, (23), 21 states have call predecessors, (23), 20 states have call successors, (23) [2023-04-01 04:53:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2023-04-01 04:53:25,478 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 34 [2023-04-01 04:53:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:53:25,480 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2023-04-01 04:53:25,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-01 04:53:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2023-04-01 04:53:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-04-01 04:53:25,482 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:53:25,482 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 04:53:25,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:53:25,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:53:25,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:53:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash 342038564, now seen corresponding path program 1 times [2023-04-01 04:53:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:53:25,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394273965] [2023-04-01 04:53:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:53:25,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:53:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:53:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 04:53:26,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:53:26,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394273965] [2023-04-01 04:53:26,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394273965] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:53:26,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:53:26,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-01 04:53:26,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070065] [2023-04-01 04:53:26,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:53:26,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 04:53:26,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:53:26,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 04:53:26,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-01 04:53:26,085 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 04:53:26,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:53:26,517 INFO L93 Difference]: Finished difference Result 235 states and 284 transitions. [2023-04-01 04:53:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-01 04:53:26,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2023-04-01 04:53:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:53:26,520 INFO L225 Difference]: With dead ends: 235 [2023-04-01 04:53:26,520 INFO L226 Difference]: Without dead ends: 160 [2023-04-01 04:53:26,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-01 04:53:26,522 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 84 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 04:53:26,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 283 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 04:53:26,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-04-01 04:53:26,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 130. [2023-04-01 04:53:26,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 76 states have internal predecessors, (85), 32 states have call successors, (32), 25 states have call predecessors, (32), 24 states have return successors, (38), 29 states have call predecessors, (38), 29 states have call successors, (38) [2023-04-01 04:53:26,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 155 transitions. [2023-04-01 04:53:26,555 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 155 transitions. Word has length 35 [2023-04-01 04:53:26,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:53:26,555 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 155 transitions. [2023-04-01 04:53:26,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-01 04:53:26,555 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 155 transitions. [2023-04-01 04:53:26,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-04-01 04:53:26,559 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:53:26,559 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-04-01 04:53:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 04:53:26,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:53:26,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:53:26,560 INFO L85 PathProgramCache]: Analyzing trace with hash -162523397, now seen corresponding path program 1 times [2023-04-01 04:53:26,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:53:26,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703758869] [2023-04-01 04:53:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:53:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:53:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:53:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-04-01 04:53:26,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:53:26,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703758869] [2023-04-01 04:53:26,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703758869] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:53:26,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829833665] [2023-04-01 04:53:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:53:26,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:53:26,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:53:26,677 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:53:26,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 04:53:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:53:26,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-01 04:53:26,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:53:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 04:53:26,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 04:53:26,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829833665] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:53:26,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 04:53:26,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-04-01 04:53:26,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214995663] [2023-04-01 04:53:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:53:26,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 04:53:26,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:53:26,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 04:53:26,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 04:53:26,955 INFO L87 Difference]: Start difference. First operand 130 states and 155 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-01 04:53:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:53:27,039 INFO L93 Difference]: Finished difference Result 232 states and 278 transitions. [2023-04-01 04:53:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 04:53:27,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 78 [2023-04-01 04:53:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:53:27,045 INFO L225 Difference]: With dead ends: 232 [2023-04-01 04:53:27,045 INFO L226 Difference]: Without dead ends: 136 [2023-04-01 04:53:27,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 04:53:27,051 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 04:53:27,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 04:53:27,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-04-01 04:53:27,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-04-01 04:53:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 80 states have internal predecessors, (90), 32 states have call successors, (32), 25 states have call predecessors, (32), 25 states have return successors, (39), 31 states have call predecessors, (39), 29 states have call successors, (39) [2023-04-01 04:53:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2023-04-01 04:53:27,084 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 78 [2023-04-01 04:53:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:53:27,085 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2023-04-01 04:53:27,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-01 04:53:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2023-04-01 04:53:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-01 04:53:27,086 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:53:27,087 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 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] [2023-04-01 04:53:27,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 04:53:27,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:53:27,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:53:27,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:53:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2032890405, now seen corresponding path program 1 times [2023-04-01 04:53:27,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:53:27,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502891033] [2023-04-01 04:53:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:53:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:53:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:53:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-01 04:53:27,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:53:27,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502891033] [2023-04-01 04:53:27,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502891033] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:53:27,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740093897] [2023-04-01 04:53:27,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:53:27,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:53:27,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:53:27,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:53:27,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 04:53:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:53:28,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 57 conjunts are in the unsatisfiable core [2023-04-01 04:53:28,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:53:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-01 04:53:28,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 04:53:28,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740093897] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:53:28,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 04:53:28,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2023-04-01 04:53:28,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130280714] [2023-04-01 04:53:28,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:53:28,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 04:53:28,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:53:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 04:53:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-04-01 04:53:28,873 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 5 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 04:53:29,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:53:29,878 INFO L93 Difference]: Finished difference Result 304 states and 362 transitions. [2023-04-01 04:53:29,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 04:53:29,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 5 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 80 [2023-04-01 04:53:29,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:53:29,881 INFO L225 Difference]: With dead ends: 304 [2023-04-01 04:53:29,881 INFO L226 Difference]: Without dead ends: 193 [2023-04-01 04:53:29,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2023-04-01 04:53:29,883 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 205 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-01 04:53:29,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 258 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-01 04:53:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-04-01 04:53:29,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 138. [2023-04-01 04:53:29,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 84 states have internal predecessors, (93), 30 states have call successors, (30), 25 states have call predecessors, (30), 26 states have return successors, (38), 28 states have call predecessors, (38), 27 states have call successors, (38) [2023-04-01 04:53:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2023-04-01 04:53:29,922 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 80 [2023-04-01 04:53:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:53:29,922 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2023-04-01 04:53:29,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 5 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-01 04:53:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2023-04-01 04:53:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-04-01 04:53:29,930 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:53:29,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:53:29,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 04:53:30,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 04:53:30,146 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:53:30,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:53:30,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2036590775, now seen corresponding path program 1 times [2023-04-01 04:53:30,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:53:30,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296123571] [2023-04-01 04:53:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:53:30,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:53:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:53:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-01 04:53:36,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:53:36,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296123571] [2023-04-01 04:53:36,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296123571] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:53:36,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935240497] [2023-04-01 04:53:36,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:53:36,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:53:36,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:53:36,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:53:36,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 04:53:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:53:37,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 224 conjunts are in the unsatisfiable core [2023-04-01 04:53:37,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:53:37,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 12 treesize of output 9 [2023-04-01 04:53:37,668 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-01 04:53:37,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-04-01 04:53:37,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 12 treesize of output 9 [2023-04-01 04:53:38,104 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-04-01 04:53:38,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-04-01 04:53:40,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:53:40,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:53:40,640 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 04:53:40,644 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-01 04:53:40,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:53:40,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 36 [2023-04-01 04:53:40,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:53:40,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:53:40,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:53:40,723 INFO L321 Elim1Store]: treesize reduction 158, result has 24.0 percent of original size [2023-04-01 04:53:40,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 156 treesize of output 134 [2023-04-01 04:53:40,750 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-04-01 04:53:40,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 250 treesize of output 150 [2023-04-01 04:53:40,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:53:40,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 110 [2023-04-01 04:53:40,804 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2023-04-01 04:53:40,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 118 treesize of output 94 [2023-04-01 04:53:40,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 35 treesize of output 27 [2023-04-01 04:53:40,850 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-04-01 04:53:40,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-04-01 04:53:40,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:53:40,879 INFO L321 Elim1Store]: treesize reduction 8, result has 79.5 percent of original size [2023-04-01 04:53:40,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 43 [2023-04-01 04:53:40,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-01 04:53:40,906 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-01 04:53:40,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2023-04-01 04:53:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-01 04:53:42,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:53:44,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935240497] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:53:44,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1599697333] [2023-04-01 04:53:44,200 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2023-04-01 04:53:44,201 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:53:44,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:53:44,208 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:53:44,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:53:44,281 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 29 for LOIs [2023-04-01 04:53:44,287 INFO L197 IcfgInterpreter]: Interpreting procedure foo with input of size 29 for LOIs [2023-04-01 04:53:44,625 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_initialize with input of size 14 for LOIs [2023-04-01 04:53:44,626 INFO L197 IcfgInterpreter]: Interpreting procedure mutex_lock with input of size 19 for LOIs [2023-04-01 04:53:44,697 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_set_add with input of size 38 for LOIs [2023-04-01 04:53:44,866 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_successful_malloc with input of size 21 for LOIs [2023-04-01 04:53:44,944 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 42 for LOIs [2023-04-01 04:53:44,953 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_is_in_set with input of size 23 for LOIs [2023-04-01 04:53:45,131 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-04-01 04:53:45,138 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_list_add with input of size 57 for LOIs [2023-04-01 04:53:45,250 INFO L197 IcfgInterpreter]: Interpreting procedure __ldv_list_add with input of size 66 for LOIs [2023-04-01 04:53:45,264 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 04:53:51,907 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2998#(and (<= 1 |#StackHeapBarrier|) (= mutex_lock_~m.offset 0) (= |~#mutexes~0.base| 3) (= |mutex_lock_#in~m.offset| 0) (= |~#mutexes~0.offset| 0) (= |mutex_lock_#in~m.base| mutex_lock_~m.base) (<= (+ |mutex_lock_#in~m.base| 1) |#StackHeapBarrier|) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 04:53:51,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 04:53:51,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-01 04:53:51,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 34] total 68 [2023-04-01 04:53:51,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888894567] [2023-04-01 04:53:51,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-01 04:53:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-04-01 04:53:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:53:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-04-01 04:53:51,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=10939, Unknown=54, NotChecked=0, Total=11556 [2023-04-01 04:53:51,915 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 49 states have internal predecessors, (70), 25 states have call successors, (34), 15 states have call predecessors, (34), 22 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) [2023-04-01 04:54:03,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:54:03,679 INFO L93 Difference]: Finished difference Result 316 states and 371 transitions. [2023-04-01 04:54:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-04-01 04:54:03,680 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 49 states have internal predecessors, (70), 25 states have call successors, (34), 15 states have call predecessors, (34), 22 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) Word has length 72 [2023-04-01 04:54:03,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:54:03,681 INFO L225 Difference]: With dead ends: 316 [2023-04-01 04:54:03,682 INFO L226 Difference]: Without dead ends: 214 [2023-04-01 04:54:03,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5981 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=1366, Invalid=21532, Unknown=54, NotChecked=0, Total=22952 [2023-04-01 04:54:03,687 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 562 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 5404 mSolverCounterSat, 260 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 5675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 5404 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-04-01 04:54:03,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 1618 Invalid, 5675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 5404 Invalid, 11 Unknown, 0 Unchecked, 6.4s Time] [2023-04-01 04:54:03,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-04-01 04:54:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 155. [2023-04-01 04:54:03,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 96 states have internal predecessors, (110), 31 states have call successors, (31), 28 states have call predecessors, (31), 30 states have return successors, (38), 30 states have call predecessors, (38), 28 states have call successors, (38) [2023-04-01 04:54:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 179 transitions. [2023-04-01 04:54:03,716 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 179 transitions. Word has length 72 [2023-04-01 04:54:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:54:03,717 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 179 transitions. [2023-04-01 04:54:03,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 49 states have internal predecessors, (70), 25 states have call successors, (34), 15 states have call predecessors, (34), 22 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) [2023-04-01 04:54:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 179 transitions. [2023-04-01 04:54:03,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-04-01 04:54:03,718 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:54:03,718 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 04:54:03,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-01 04:54:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:54:03,925 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:54:03,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:54:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1903512326, now seen corresponding path program 1 times [2023-04-01 04:54:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:54:03,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927855632] [2023-04-01 04:54:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:54:03,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:54:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:54:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-04-01 04:54:07,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:54:07,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927855632] [2023-04-01 04:54:07,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927855632] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:54:07,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407221670] [2023-04-01 04:54:07,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:54:07,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:54:07,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:54:07,909 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:54:07,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 04:54:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:54:08,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 230 conjunts are in the unsatisfiable core [2023-04-01 04:54:08,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:54:08,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 12 treesize of output 9 [2023-04-01 04:54:08,519 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-01 04:54:08,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-04-01 04:54:08,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 12 treesize of output 9 [2023-04-01 04:54:08,779 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-01 04:54:08,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-04-01 04:54:11,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:54:11,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:54:11,401 INFO L321 Elim1Store]: treesize reduction 275, result has 14.1 percent of original size [2023-04-01 04:54:11,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 285 treesize of output 219 [2023-04-01 04:54:11,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:54:11,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:54:11,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2023-04-01 04:54:11,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:54:11,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:54:11,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 80 treesize of output 52 [2023-04-01 04:54:11,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 71 [2023-04-01 04:54:11,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-04-01 04:54:11,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-01 04:54:11,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-04-01 04:54:11,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 11 [2023-04-01 04:54:11,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2023-04-01 04:54:11,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 17 treesize of output 18 [2023-04-01 04:54:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-04-01 04:54:12,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:54:14,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407221670] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:54:14,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2021854795] [2023-04-01 04:54:14,959 INFO L159 IcfgInterpreter]: Started Sifa with 49 locations of interest [2023-04-01 04:54:14,959 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:54:14,959 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:54:14,960 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:54:14,960 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:54:14,986 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 29 for LOIs [2023-04-01 04:54:14,990 INFO L197 IcfgInterpreter]: Interpreting procedure foo with input of size 29 for LOIs [2023-04-01 04:54:15,259 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_initialize with input of size 14 for LOIs [2023-04-01 04:54:15,260 INFO L197 IcfgInterpreter]: Interpreting procedure mutex_lock with input of size 19 for LOIs [2023-04-01 04:54:15,332 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_set_add with input of size 38 for LOIs