/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:08:52,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:08:52,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:08:52,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 23:08:52,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 23:08:52,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 23:08:52,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 23:08:52,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 23:08:52,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 23:08:52,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 23:08:53,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 23:08:53,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 23:08:53,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:08:53,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:08:53,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:08:53,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:08:53,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:08:53,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:08:53,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:08:53,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:08:53,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:08:53,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:08:53,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:08:53,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:08:53,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 23:08:53,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 23:08:53,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 23:08:53,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 23:08:53,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 23:08:53,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 23:08:53,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 23:08:53,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 23:08:53,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 23:08:53,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 23:08:53,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 23:08:53,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 23:08:53,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 23:08:53,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 23:08:53,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 23:08:53,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 23:08:53,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 23:08:53,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:08:53,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:08:53,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:08:53,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:08:53,074 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:08:53,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:08:53,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:08:53,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:08:53,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:08:53,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:08:53,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:08:53,076 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:08:53,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:08:53,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:08:53,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:08:53,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:08:53,077 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:08:53,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:08:53,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:08:53,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:08:53,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:08:53,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:08:53,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:08:53,079 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:08:53,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:08:53,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:08:53,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:08:53,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:08:53,570 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:08:53,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2021-02-23 23:08:53,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2692804d/4f2869c2e06d47f0b3b45f276bf7e940/FLAGdcea27945 [2021-02-23 23:08:54,421 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:08:54,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2021-02-23 23:08:54,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2692804d/4f2869c2e06d47f0b3b45f276bf7e940/FLAGdcea27945 [2021-02-23 23:08:54,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2692804d/4f2869c2e06d47f0b3b45f276bf7e940 [2021-02-23 23:08:54,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:08:54,721 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:08:54,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:08:54,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:08:54,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:08:54,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:08:54" (1/1) ... [2021-02-23 23:08:54,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592de99a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:54, skipping insertion in model container [2021-02-23 23:08:54,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:08:54" (1/1) ... [2021-02-23 23:08:54,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:08:54,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:08:55,158 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[25842,25855] [2021-02-23 23:08:55,163 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[25967,25980] [2021-02-23 23:08:55,165 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[26082,26095] [2021-02-23 23:08:55,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:08:55,180 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:08:55,247 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[25842,25855] [2021-02-23 23:08:55,248 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[25967,25980] [2021-02-23 23:08:55,250 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i[26082,26095] [2021-02-23 23:08:55,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:08:55,386 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:08:55,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:55 WrapperNode [2021-02-23 23:08:55,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:08:55,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:08:55,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:08:55,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:08:55,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:55" (1/1) ... [2021-02-23 23:08:55,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:55" (1/1) ... [2021-02-23 23:08:55,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:55" (1/1) ... [2021-02-23 23:08:55,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:55" (1/1) ... [2021-02-23 23:08:55,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:55" (1/1) ... [2021-02-23 23:08:55,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:55" (1/1) ... [2021-02-23 23:08:55,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:55" (1/1) ... [2021-02-23 23:08:55,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:08:55,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:08:55,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:08:55,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:08:55,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:08:55,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:08:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:08:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 23:08:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 23:08:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:08:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 23:08:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-02-23 23:08:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-02-23 23:08:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-02-23 23:08:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-02-23 23:08:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-02-23 23:08:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-02-23 23:08:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-02-23 23:08:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-02-23 23:08:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2021-02-23 23:08:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2021-02-23 23:08:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2021-02-23 23:08:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2021-02-23 23:08:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-02-23 23:08:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2021-02-23 23:08:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-02-23 23:08:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-02-23 23:08:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-02-23 23:08:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-02-23 23:08:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-02-23 23:08:55,597 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:08:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 23:08:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 23:08:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 23:08:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 23:08:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 23:08:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 23:08:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 23:08:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 23:08:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 23:08:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 23:08:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 23:08:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 23:08:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 23:08:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 23:08:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 23:08:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 23:08:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 23:08:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 23:08:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 23:08:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 23:08:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 23:08:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 23:08:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 23:08:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 23:08:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 23:08:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 23:08:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 23:08:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 23:08:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 23:08:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 23:08:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 23:08:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 23:08:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 23:08:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 23:08:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 23:08:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 23:08:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 23:08:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 23:08:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 23:08:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 23:08:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 23:08:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 23:08:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 23:08:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 23:08:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 23:08:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 23:08:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 23:08:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 23:08:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 23:08:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 23:08:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 23:08:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 23:08:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:08:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 23:08:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 23:08:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 23:08:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 23:08:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 23:08:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 23:08:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 23:08:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:08:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 23:08:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 23:08:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 23:08:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 23:08:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 23:08:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 23:08:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 23:08:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 23:08:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 23:08:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 23:08:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 23:08:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 23:08:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 23:08:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 23:08:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 23:08:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 23:08:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 23:08:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 23:08:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 23:08:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 23:08:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 23:08:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 23:08:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 23:08:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 23:08:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 23:08:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 23:08:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 23:08:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 23:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 23:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 23:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 23:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 23:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 23:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 23:08:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 23:08:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 23:08:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 23:08:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 23:08:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 23:08:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 23:08:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 23:08:55,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:08:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 23:08:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 23:08:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:08:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:08:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 23:08:55,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:08:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-02-23 23:08:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:08:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-02-23 23:08:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-02-23 23:08:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 23:08:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-02-23 23:08:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-02-23 23:08:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-02-23 23:08:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 23:08:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-02-23 23:08:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-02-23 23:08:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2021-02-23 23:08:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2021-02-23 23:08:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2021-02-23 23:08:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2021-02-23 23:08:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-02-23 23:08:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2021-02-23 23:08:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:08:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-02-23 23:08:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-02-23 23:08:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-02-23 23:08:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-02-23 23:08:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-02-23 23:08:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:08:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:08:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:08:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-23 23:08:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:08:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:08:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:08:56,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:08:56,349 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 23:08:56,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:56 BoogieIcfgContainer [2021-02-23 23:08:56,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:08:56,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:08:56,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:08:56,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:08:56,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:08:54" (1/3) ... [2021-02-23 23:08:56,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32214267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:08:56, skipping insertion in model container [2021-02-23 23:08:56,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:08:55" (2/3) ... [2021-02-23 23:08:56,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32214267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:08:56, skipping insertion in model container [2021-02-23 23:08:56,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:08:56" (3/3) ... [2021-02-23 23:08:56,361 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2021-02-23 23:08:56,368 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:08:56,374 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-23 23:08:56,395 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-23 23:08:56,422 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:08:56,423 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:08:56,423 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:08:56,423 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:08:56,423 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:08:56,423 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:08:56,423 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:08:56,424 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:08:56,446 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2021-02-23 23:08:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-23 23:08:56,458 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:56,460 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:56,460 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:56,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:56,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1683504900, now seen corresponding path program 1 times [2021-02-23 23:08:56,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:56,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369036067] [2021-02-23 23:08:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:56,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:56,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:56,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:56,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:56,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:08:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:56,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:56,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 23:08:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:56,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:56,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 23:08:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:56,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 23:08:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:56,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,919 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 23:08:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:56,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:56,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-23 23:08:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:56,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:56,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:56,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 23:08:56,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369036067] [2021-02-23 23:08:56,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:56,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:08:56,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848736854] [2021-02-23 23:08:56,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:08:56,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:57,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:08:57,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:08:57,010 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 6 states. [2021-02-23 23:08:57,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:08:57,797 INFO L93 Difference]: Finished difference Result 374 states and 428 transitions. [2021-02-23 23:08:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 23:08:57,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2021-02-23 23:08:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:08:57,815 INFO L225 Difference]: With dead ends: 374 [2021-02-23 23:08:57,815 INFO L226 Difference]: Without dead ends: 196 [2021-02-23 23:08:57,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:08:57,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-02-23 23:08:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 176. [2021-02-23 23:08:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2021-02-23 23:08:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2021-02-23 23:08:57,907 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 64 [2021-02-23 23:08:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:08:57,908 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2021-02-23 23:08:57,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:08:57,908 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2021-02-23 23:08:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-23 23:08:57,911 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:08:57,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:08:57,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:08:57,912 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:08:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:08:57,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1311659407, now seen corresponding path program 1 times [2021-02-23 23:08:57,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:08:57,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86621742] [2021-02-23 23:08:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:08:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:58,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:58,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:58,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:58,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:58,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:58,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:08:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:58,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:58,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,187 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:08:58,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 23:08:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:08:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:58,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:58,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 23:08:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:58,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:58,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 23:08:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:58,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:58,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 23:08:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:58,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:58,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 23:08:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:58,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:58,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-23 23:08:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:08:58,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:08:58,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:08:58,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:58,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:08:58,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:08:58,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:08:58,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:08:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-02-23 23:08:58,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86621742] [2021-02-23 23:08:58,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:08:58,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 23:08:58,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109273408] [2021-02-23 23:08:58,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:08:58,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:08:58,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:08:58,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:08:58,467 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 11 states. [2021-02-23 23:09:01,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:01,063 INFO L93 Difference]: Finished difference Result 498 states and 556 transitions. [2021-02-23 23:09:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-23 23:09:01,064 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2021-02-23 23:09:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:01,071 INFO L225 Difference]: With dead ends: 498 [2021-02-23 23:09:01,072 INFO L226 Difference]: Without dead ends: 347 [2021-02-23 23:09:01,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2021-02-23 23:09:01,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-02-23 23:09:01,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 281. [2021-02-23 23:09:01,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2021-02-23 23:09:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 312 transitions. [2021-02-23 23:09:01,162 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 312 transitions. Word has length 67 [2021-02-23 23:09:01,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:01,163 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 312 transitions. [2021-02-23 23:09:01,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:09:01,163 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 312 transitions. [2021-02-23 23:09:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-02-23 23:09:01,166 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:01,166 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-23 23:09:01,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:09:01,167 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:01,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1463114991, now seen corresponding path program 1 times [2021-02-23 23:09:01,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:01,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247737259] [2021-02-23 23:09:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,229 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:09:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 23:09:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 23:09:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 23:09:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,287 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 23:09:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,291 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 23:09:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:09:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 23:09:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,347 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-23 23:09:01,348 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-23 23:09:01,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 23:09:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:01,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-02-23 23:09:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:09:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 23:09:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 23:09:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 23:09:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:01,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:01,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-02-23 23:09:01,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247737259] [2021-02-23 23:09:01,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:01,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-23 23:09:01,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494761398] [2021-02-23 23:09:01,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 23:09:01,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:01,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 23:09:01,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-23 23:09:01,450 INFO L87 Difference]: Start difference. First operand 281 states and 312 transitions. Second operand 7 states. [2021-02-23 23:09:02,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:02,253 INFO L93 Difference]: Finished difference Result 515 states and 572 transitions. [2021-02-23 23:09:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 23:09:02,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2021-02-23 23:09:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:02,263 INFO L225 Difference]: With dead ends: 515 [2021-02-23 23:09:02,263 INFO L226 Difference]: Without dead ends: 290 [2021-02-23 23:09:02,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-02-23 23:09:02,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-02-23 23:09:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-02-23 23:09:02,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-02-23 23:09:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 318 transitions. [2021-02-23 23:09:02,377 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 318 transitions. Word has length 142 [2021-02-23 23:09:02,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:02,378 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 318 transitions. [2021-02-23 23:09:02,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 23:09:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 318 transitions. [2021-02-23 23:09:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 23:09:02,392 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:02,392 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:09:02,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:09:02,393 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:02,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:02,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1214229285, now seen corresponding path program 1 times [2021-02-23 23:09:02,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:02,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719344995] [2021-02-23 23:09:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:09:02,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:09:02,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:09:02,548 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:09:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:02,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:02,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:09:02,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 23:09:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:02,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 23:09:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:02,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 23:09:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:02,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-23 23:09:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:02,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-02-23 23:09:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,647 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:02,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-23 23:09:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:09:02,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 23:09:02,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:09:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:09:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:02,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,749 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:02,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:09:02,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:09:02,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:09:02,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:02,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 23:09:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:02,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-23 23:09:02,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:09:02,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 23:09:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:02,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:02,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:09:02,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:09:02,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 23:09:02,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:02,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:09:03,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:03,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 23:09:03,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 23:09:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:03,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:03,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:03,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-02-23 23:09:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:03,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:03,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:03,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-23 23:09:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:03,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:03,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:03,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 23:09:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:03,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:03,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:03,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 23:09:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:09:03,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:09:03,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:09:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-23 23:09:03,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719344995] [2021-02-23 23:09:03,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:09:03,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-02-23 23:09:03,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894104960] [2021-02-23 23:09:03,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-23 23:09:03,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:09:03,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-23 23:09:03,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-02-23 23:09:03,148 INFO L87 Difference]: Start difference. First operand 287 states and 318 transitions. Second operand 22 states. [2021-02-23 23:09:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:09:08,977 INFO L93 Difference]: Finished difference Result 733 states and 808 transitions. [2021-02-23 23:09:08,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-02-23 23:09:08,977 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 148 [2021-02-23 23:09:08,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:09:08,986 INFO L225 Difference]: With dead ends: 733 [2021-02-23 23:09:08,986 INFO L226 Difference]: Without dead ends: 406 [2021-02-23 23:09:08,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1205, Invalid=4957, Unknown=0, NotChecked=0, Total=6162 [2021-02-23 23:09:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-02-23 23:09:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 293. [2021-02-23 23:09:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2021-02-23 23:09:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 316 transitions. [2021-02-23 23:09:09,046 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 316 transitions. Word has length 148 [2021-02-23 23:09:09,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:09:09,046 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 316 transitions. [2021-02-23 23:09:09,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2021-02-23 23:09:09,046 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 316 transitions. [2021-02-23 23:09:09,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-02-23 23:09:09,049 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:09:09,049 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2021-02-23 23:09:09,049 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:09:09,050 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:09:09,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:09:09,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1707521281, now seen corresponding path program 1 times [2021-02-23 23:09:09,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:09:09,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806117050] [2021-02-23 23:09:09,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:09:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:09:09,091 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:09:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:09:09,122 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:09:09,187 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:09:09,187 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:09:09,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 23:09:09,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:09:09 BoogieIcfgContainer [2021-02-23 23:09:09,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:09:09,282 INFO L168 Benchmark]: Toolchain (without parser) took 14570.48 ms. Allocated memory was 153.1 MB in the beginning and 345.0 MB in the end (delta: 191.9 MB). Free memory was 127.2 MB in the beginning and 224.4 MB in the end (delta: -97.1 MB). Peak memory consumption was 95.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:09:09,283 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 153.1 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:09:09,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 665.92 ms. Allocated memory is still 153.1 MB. Free memory was 126.2 MB in the beginning and 130.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:09:09,284 INFO L168 Benchmark]: Boogie Preprocessor took 104.44 ms. Allocated memory is still 153.1 MB. Free memory was 130.9 MB in the beginning and 127.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:09:09,285 INFO L168 Benchmark]: RCFGBuilder took 856.91 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 61.2 MB in the end (delta: 66.6 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:09:09,285 INFO L168 Benchmark]: TraceAbstraction took 12924.90 ms. Allocated memory was 153.1 MB in the beginning and 345.0 MB in the end (delta: 191.9 MB). Free memory was 60.7 MB in the beginning and 224.4 MB in the end (delta: -163.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:09:09,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 153.1 MB. Free memory is still 128.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 665.92 ms. Allocated memory is still 153.1 MB. Free memory was 126.2 MB in the beginning and 130.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 104.44 ms. Allocated memory is still 153.1 MB. Free memory was 130.9 MB in the beginning and 127.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 856.91 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 61.2 MB in the end (delta: 66.6 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12924.90 ms. Allocated memory was 153.1 MB in the beginning and 345.0 MB in the end (delta: 191.9 MB). Free memory was 60.7 MB in the beginning and 224.4 MB in the end (delta: -163.7 MB). Peak memory consumption was 29.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 669]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L665] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; VAL [\old(mutexes)=null, \old(mutexes)=null, mutexes={3:0}] [L692] CALL foo() VAL [mutexes={3:0}] [L681] FCALL ldv_initialize() VAL [mutexes={3:0}] [L682] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={3:0}] [L576] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={-1:0}, mutexes={3:0}, ptr={-1:0}, size=8] [L577] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={3:0}] [L565] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={3:0}] [L577] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={-1:0}, mutexes={3:0}, ptr={-1:0}, size=8] [L578] return ptr; VAL [\old(size)=8, \result={-1:0}, malloc(size)={-1:0}, mutexes={3:0}, ptr={-1:0}, size=8] [L682] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-1:0}, mutexes={3:0}] [L682] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); VAL [ldv_successful_malloc(sizeof(struct mutex))={-1:0}, m1={-1:0}, mutexes={3:0}] [L683] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={3:0}] [L576] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={-2:0}, mutexes={3:0}, ptr={-2:0}, size=8] [L577] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={3:0}] [L565] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={3:0}] [L577] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={-2:0}, mutexes={3:0}, ptr={-2:0}, size=8] [L578] return ptr; VAL [\old(size)=8, \result={-2:0}, malloc(size)={-2:0}, mutexes={3:0}, ptr={-2:0}, size=8] [L683] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-2:0}, m1={-1:0}, mutexes={3:0}] [L683] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); VAL [ldv_successful_malloc(sizeof(struct mutex))={-2:0}, m1={-1:0}, m2={-2:0}, mutexes={3:0}] [L684] CALL mutex_lock(m1) VAL [m={-1:0}, mutexes={3:0}] [L669] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; VAL [e={-1:0}, e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] EXPR (s)->next VAL [(s)->next={3:0}, e={-1:0}, e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); VAL [(s)->next={3:0}, __mptr={3:0}, e={-1:0}, e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] COND FALSE !(&m->list != (s)) VAL [__mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L660] return 0; VAL [\result=0, __mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L669] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=0, m={-1:0}, m={-1:0}, mutexes={3:0}] [L669] COND FALSE !(ldv_is_in_set(m, &mutexes)) VAL [ldv_is_in_set(m, &mutexes)=0, m={-1:0}, m={-1:0}, mutexes={3:0}] [L670] CALL ldv_set_add(m, &mutexes) VAL [mutexes={3:0}, new={-1:0}, s={3:0}] [L636] CALL, EXPR ldv_is_in_set(new, s) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; VAL [e={-1:0}, e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] EXPR (s)->next VAL [(s)->next={3:0}, e={-1:0}, e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); VAL [(s)->next={3:0}, __mptr={3:0}, e={-1:0}, e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] COND FALSE !(&m->list != (s)) VAL [__mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L660] return 0; VAL [\result=0, __mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L636] RET, EXPR ldv_is_in_set(new, s) VAL [ldv_is_in_set(new, s)=0, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L636] COND TRUE !ldv_is_in_set(new, s) VAL [ldv_is_in_set(new, s)=0, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L637] struct ldv_list_element *le; VAL [mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L638] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, mutexes={3:0}] [L576] void *ptr = malloc(size); VAL [\old(size)=12, malloc(size)={-3:0}, mutexes={3:0}, ptr={-3:0}, size=12] [L577] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={3:0}] [L565] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={3:0}] [L577] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=12, malloc(size)={-3:0}, mutexes={3:0}, ptr={-3:0}, size=12] [L578] return ptr; VAL [\old(size)=12, \result={-3:0}, malloc(size)={-3:0}, mutexes={3:0}, ptr={-3:0}, size=12] [L638] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [ldv_successful_malloc(sizeof(struct ldv_list_element))={-3:0}, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L638] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [ldv_successful_malloc(sizeof(struct ldv_list_element))={-3:0}, le={-3:0}, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L639] le->e = new VAL [le={-3:0}, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L640] CALL ldv_list_add(&le->list, s) VAL [head={3:0}, mutexes={3:0}, new={-3:4}] [L608] EXPR head->next VAL [head={3:0}, head={3:0}, head->next={3:0}, mutexes={3:0}, new={-3:4}, new={-3:4}] [L608] CALL __ldv_list_add(new, head, head->next) VAL [mutexes={3:0}, new={-3:4}, next={3:0}, prev={3:0}] [L596] next->prev = new VAL [mutexes={3:0}, new={-3:4}, new={-3:4}, next={3:0}, next={3:0}, prev={3:0}, prev={3:0}] [L597] new->next = next VAL [mutexes={3:0}, new={-3:4}, new={-3:4}, next={3:0}, next={3:0}, prev={3:0}, prev={3:0}] [L598] new->prev = prev VAL [mutexes={3:0}, new={-3:4}, new={-3:4}, next={3:0}, next={3:0}, prev={3:0}, prev={3:0}] [L599] prev->next = new VAL [mutexes={3:0}, new={-3:4}, new={-3:4}, next={3:0}, next={3:0}, prev={3:0}, prev={3:0}] [L608] RET __ldv_list_add(new, head, head->next) VAL [head={3:0}, head={3:0}, head->next={3:0}, mutexes={3:0}, new={-3:4}, new={-3:4}] [L640] RET ldv_list_add(&le->list, s) VAL [le={-3:0}, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L670] RET ldv_set_add(m, &mutexes) VAL [m={-1:0}, m={-1:0}, mutexes={3:0}] [L684] RET mutex_lock(m1) VAL [m1={-1:0}, m2={-2:0}, mutexes={3:0}] [L685] CALL mutex_lock(m1) VAL [m={-1:0}, mutexes={3:0}] [L669] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; VAL [e={-1:0}, e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] EXPR (s)->next VAL [(s)->next={-3:4}, e={-1:0}, e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); VAL [(s)->next={-3:4}, __mptr={-3:4}, e={-1:0}, e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] COND TRUE &m->list != (s) VAL [__mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L656] EXPR m->e VAL [__mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, m->e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L656] COND TRUE m->e == e VAL [__mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, m->e={-1:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L657] return 1; VAL [\result=1, __mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L669] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=1, m={-1:0}, m={-1:0}, mutexes={3:0}] [L669] COND TRUE ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=1, m={-1:0}, m={-1:0}, mutexes={3:0}] [L669] reach_error() VAL [m={-1:0}, m={-1:0}, mutexes={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 26 procedures, 227 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.7s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 714 SDtfs, 2280 SDslu, 589 SDs, 0 SdLazy, 3888 SolverSat, 538 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 202 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 560 NumberOfCodeBlocks, 560 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 417 ConstructedInterpolants, 0 QuantifiedInterpolants, 201093 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 210/293 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...