/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 20:35:33,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 20:35:33,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 20:35:33,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 20:35:33,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 20:35:33,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 20:35:33,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 20:35:33,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 20:35:33,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 20:35:33,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 20:35:33,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 20:35:33,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 20:35:33,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 20:35:33,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 20:35:33,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 20:35:33,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 20:35:33,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 20:35:33,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 20:35:33,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 20:35:33,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 20:35:33,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 20:35:33,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 20:35:33,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 20:35:33,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 20:35:33,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 20:35:33,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 20:35:33,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 20:35:33,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 20:35:33,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 20:35:33,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 20:35:33,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 20:35:33,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 20:35:33,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 20:35:33,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 20:35:33,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 20:35:33,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 20:35:33,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 20:35:33,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 20:35:33,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 20:35:33,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 20:35:33,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 20:35:33,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 20:35:34,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 20:35:34,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 20:35:34,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 20:35:34,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 20:35:34,028 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 20:35:34,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 20:35:34,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 20:35:34,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 20:35:34,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 20:35:34,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 20:35:34,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 20:35:34,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 20:35:34,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 20:35:34,029 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 20:35:34,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 20:35:34,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 20:35:34,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 20:35:34,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 20:35:34,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 20:35:34,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 20:35:34,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 20:35:34,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:35:34,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 20:35:34,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 20:35:34,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 20:35:34,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 20:35:34,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 20:35:34,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 20:35:34,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 20:35:34,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 20:35:34,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 20:35:34,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 20:35:34,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 20:35:34,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 20:35:34,325 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 20:35:34,326 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-08-21 20:35:34,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd0b90548/2c55da6e8808473ab5cf43e1e7a34d22/FLAG7f753f33b [2020-08-21 20:35:34,962 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 20:35:34,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-08-21 20:35:34,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd0b90548/2c55da6e8808473ab5cf43e1e7a34d22/FLAG7f753f33b [2020-08-21 20:35:35,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd0b90548/2c55da6e8808473ab5cf43e1e7a34d22 [2020-08-21 20:35:35,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 20:35:35,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 20:35:35,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 20:35:35,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 20:35:35,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 20:35:35,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:35:35" (1/1) ... [2020-08-21 20:35:35,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f3a35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35, skipping insertion in model container [2020-08-21 20:35:35,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 08:35:35" (1/1) ... [2020-08-21 20:35:35,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 20:35:35,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 20:35:35,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:35:35,784 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 20:35:35,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 20:35:35,905 INFO L208 MainTranslator]: Completed translation [2020-08-21 20:35:35,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35 WrapperNode [2020-08-21 20:35:35,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 20:35:35,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 20:35:35,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 20:35:35,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 20:35:35,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35" (1/1) ... [2020-08-21 20:35:35,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35" (1/1) ... [2020-08-21 20:35:35,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35" (1/1) ... [2020-08-21 20:35:35,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35" (1/1) ... [2020-08-21 20:35:35,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35" (1/1) ... [2020-08-21 20:35:35,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35" (1/1) ... [2020-08-21 20:35:35,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35" (1/1) ... [2020-08-21 20:35:35,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 20:35:35,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 20:35:35,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 20:35:35,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 20:35:35,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 20:35:36,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 20:35:36,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 20:35:36,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 20:35:36,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 20:35:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 20:35:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 20:35:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-08-21 20:35:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-08-21 20:35:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-08-21 20:35:36,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-08-21 20:35:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-08-21 20:35:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-08-21 20:35:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-08-21 20:35:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-08-21 20:35:36,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-08-21 20:35:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-21 20:35:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-08-21 20:35:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-08-21 20:35:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-08-21 20:35:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 20:35:36,065 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-21 20:35:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-21 20:35:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 20:35:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-08-21 20:35:36,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 20:35:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 20:35:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 20:35:36,066 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 20:35:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 20:35:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 20:35:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 20:35:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 20:35:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 20:35:36,067 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 20:35:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 20:35:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 20:35:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 20:35:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 20:35:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 20:35:36,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 20:35:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 20:35:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 20:35:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 20:35:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 20:35:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 20:35:36,069 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 20:35:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 20:35:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 20:35:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 20:35:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 20:35:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 20:35:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 20:35:36,070 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 20:35:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 20:35:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 20:35:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 20:35:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 20:35:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 20:35:36,071 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 20:35:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 20:35:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 20:35:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 20:35:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 20:35:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 20:35:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 20:35:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 20:35:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 20:35:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 20:35:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 20:35:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 20:35:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 20:35:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 20:35:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 20:35:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 20:35:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 20:35:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 20:35:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 20:35:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 20:35:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 20:35:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 20:35:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 20:35:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 20:35:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 20:35:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 20:35:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 20:35:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 20:35:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 20:35:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 20:35:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 20:35:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 20:35:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 20:35:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 20:35:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 20:35:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 20:35:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 20:35:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 20:35:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 20:35:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 20:35:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 20:35:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 20:35:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 20:35:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 20:35:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 20:35:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 20:35:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 20:35:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 20:35:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 20:35:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 20:35:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 20:35:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 20:35:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 20:35:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 20:35:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 20:35:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 20:35:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 20:35:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 20:35:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 20:35:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 20:35:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 20:35:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 20:35:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 20:35:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 20:35:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-08-21 20:35:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-08-21 20:35:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 20:35:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-08-21 20:35:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-08-21 20:35:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-08-21 20:35:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 20:35:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-08-21 20:35:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-08-21 20:35:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-08-21 20:35:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-08-21 20:35:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-21 20:35:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-08-21 20:35:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-08-21 20:35:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-08-21 20:35:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 20:35:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 20:35:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-21 20:35:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-21 20:35:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 20:35:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-08-21 20:35:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 20:35:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 20:35:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 20:35:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 20:35:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 20:35:36,765 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 20:35:36,766 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 20:35:36,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:35:36 BoogieIcfgContainer [2020-08-21 20:35:36,771 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 20:35:36,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 20:35:36,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 20:35:36,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 20:35:36,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 08:35:35" (1/3) ... [2020-08-21 20:35:36,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f3949c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:35:36, skipping insertion in model container [2020-08-21 20:35:36,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 08:35:35" (2/3) ... [2020-08-21 20:35:36,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f3949c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 08:35:36, skipping insertion in model container [2020-08-21 20:35:36,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 08:35:36" (3/3) ... [2020-08-21 20:35:36,781 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-08-21 20:35:36,794 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 20:35:36,804 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-21 20:35:36,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-21 20:35:36,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 20:35:36,848 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 20:35:36,848 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 20:35:36,848 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 20:35:36,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 20:35:36,849 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 20:35:36,849 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 20:35:36,849 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 20:35:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-08-21 20:35:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 20:35:36,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:35:36,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:35:36,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:35:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:35:36,908 INFO L82 PathProgramCache]: Analyzing trace with hash -326397870, now seen corresponding path program 1 times [2020-08-21 20:35:36,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:35:36,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691987647] [2020-08-21 20:35:36,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:35:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:35:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:35:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:35:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:35:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:35:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-21 20:35:37,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691987647] [2020-08-21 20:35:37,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:35:37,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 20:35:37,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448630648] [2020-08-21 20:35:37,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 20:35:37,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:35:37,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 20:35:37,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:35:37,271 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2020-08-21 20:35:37,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:35:37,523 INFO L93 Difference]: Finished difference Result 217 states and 268 transitions. [2020-08-21 20:35:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 20:35:37,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-08-21 20:35:37,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:35:37,539 INFO L225 Difference]: With dead ends: 217 [2020-08-21 20:35:37,540 INFO L226 Difference]: Without dead ends: 111 [2020-08-21 20:35:37,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 20:35:37,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-21 20:35:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2020-08-21 20:35:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-21 20:35:37,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-08-21 20:35:37,608 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2020-08-21 20:35:37,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:35:37,609 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-08-21 20:35:37,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 20:35:37,609 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-08-21 20:35:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 20:35:37,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:35:37,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:35:37,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 20:35:37,612 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:35:37,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:35:37,613 INFO L82 PathProgramCache]: Analyzing trace with hash -934339182, now seen corresponding path program 1 times [2020-08-21 20:35:37,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:35:37,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614767127] [2020-08-21 20:35:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:35:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:35:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:35:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:35:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:35:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:35:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-21 20:35:37,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614767127] [2020-08-21 20:35:37,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:35:37,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 20:35:37,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269446331] [2020-08-21 20:35:37,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 20:35:37,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:35:37,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 20:35:37,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 20:35:37,806 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 6 states. [2020-08-21 20:35:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:35:38,281 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2020-08-21 20:35:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 20:35:38,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-08-21 20:35:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:35:38,284 INFO L225 Difference]: With dead ends: 117 [2020-08-21 20:35:38,284 INFO L226 Difference]: Without dead ends: 115 [2020-08-21 20:35:38,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-21 20:35:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-21 20:35:38,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2020-08-21 20:35:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-21 20:35:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-08-21 20:35:38,304 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2020-08-21 20:35:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:35:38,305 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-08-21 20:35:38,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 20:35:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-08-21 20:35:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 20:35:38,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:35:38,307 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:35:38,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 20:35:38,307 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:35:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:35:38,308 INFO L82 PathProgramCache]: Analyzing trace with hash 640264123, now seen corresponding path program 1 times [2020-08-21 20:35:38,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:35:38,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370439026] [2020-08-21 20:35:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:35:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:38,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:35:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:38,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:35:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:38,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:35:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:38,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:38,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:35:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:38,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:38,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 20:35:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-21 20:35:38,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370439026] [2020-08-21 20:35:38,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 20:35:38,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 20:35:38,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63676241] [2020-08-21 20:35:38,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:35:38,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:35:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:35:38,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:35:38,513 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 7 states. [2020-08-21 20:35:39,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:35:39,517 INFO L93 Difference]: Finished difference Result 288 states and 346 transitions. [2020-08-21 20:35:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 20:35:39,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-08-21 20:35:39,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:35:39,521 INFO L225 Difference]: With dead ends: 288 [2020-08-21 20:35:39,521 INFO L226 Difference]: Without dead ends: 200 [2020-08-21 20:35:39,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-08-21 20:35:39,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-21 20:35:39,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 163. [2020-08-21 20:35:39,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-21 20:35:39,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 194 transitions. [2020-08-21 20:35:39,556 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 194 transitions. Word has length 42 [2020-08-21 20:35:39,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:35:39,556 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 194 transitions. [2020-08-21 20:35:39,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:35:39,557 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 194 transitions. [2020-08-21 20:35:39,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 20:35:39,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:35:39,560 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:35:39,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 20:35:39,561 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:35:39,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:35:39,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1149911364, now seen corresponding path program 1 times [2020-08-21 20:35:39,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:35:39,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53186116] [2020-08-21 20:35:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:35:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:35:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:35:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:35:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:35:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 20:35:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:35:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 20:35:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:35:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 20:35:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-08-21 20:35:39,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53186116] [2020-08-21 20:35:39,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:35:39,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 20:35:39,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233168777] [2020-08-21 20:35:39,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 20:35:39,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:35:39,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 20:35:39,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 20:35:39,843 INFO L87 Difference]: Start difference. First operand 163 states and 194 transitions. Second operand 7 states. [2020-08-21 20:35:40,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:35:40,325 INFO L93 Difference]: Finished difference Result 296 states and 353 transitions. [2020-08-21 20:35:40,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 20:35:40,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-08-21 20:35:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:35:40,328 INFO L225 Difference]: With dead ends: 296 [2020-08-21 20:35:40,328 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 20:35:40,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-21 20:35:40,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 20:35:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-08-21 20:35:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-21 20:35:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 200 transitions. [2020-08-21 20:35:40,354 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 200 transitions. Word has length 90 [2020-08-21 20:35:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:35:40,354 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 200 transitions. [2020-08-21 20:35:40,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 20:35:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 200 transitions. [2020-08-21 20:35:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 20:35:40,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:35:40,357 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:35:40,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 20:35:40,358 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:35:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:35:40,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1610969230, now seen corresponding path program 1 times [2020-08-21 20:35:40,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:35:40,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562857404] [2020-08-21 20:35:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:35:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 20:35:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 20:35:40,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:35:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 20:35:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 20:35:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:35:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 20:35:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 20:35:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 20:35:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 20:35:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 20:35:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-08-21 20:35:40,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562857404] [2020-08-21 20:35:40,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 20:35:40,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 20:35:40,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955421671] [2020-08-21 20:35:40,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 20:35:40,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 20:35:40,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 20:35:40,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-08-21 20:35:40,708 INFO L87 Difference]: Start difference. First operand 169 states and 200 transitions. Second operand 15 states. [2020-08-21 20:35:43,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 20:35:43,455 INFO L93 Difference]: Finished difference Result 422 states and 497 transitions. [2020-08-21 20:35:43,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 20:35:43,456 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-08-21 20:35:43,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 20:35:43,459 INFO L225 Difference]: With dead ends: 422 [2020-08-21 20:35:43,459 INFO L226 Difference]: Without dead ends: 235 [2020-08-21 20:35:43,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=465, Invalid=1887, Unknown=0, NotChecked=0, Total=2352 [2020-08-21 20:35:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-21 20:35:43,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 179. [2020-08-21 20:35:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-08-21 20:35:43,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions. [2020-08-21 20:35:43,488 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 90 [2020-08-21 20:35:43,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 20:35:43,488 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions. [2020-08-21 20:35:43,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 20:35:43,489 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions. [2020-08-21 20:35:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-21 20:35:43,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 20:35:43,491 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 20:35:43,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 20:35:43,491 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 20:35:43,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 20:35:43,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1106436747, now seen corresponding path program 1 times [2020-08-21 20:35:43,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 20:35:43,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376435421] [2020-08-21 20:35:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 20:35:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 20:35:43,530 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 20:35:43,530 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 20:35:43,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 20:35:43,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 08:35:43 BoogieIcfgContainer [2020-08-21 20:35:43,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 20:35:43,564 INFO L168 Benchmark]: Toolchain (without parser) took 8341.80 ms. Allocated memory was 141.0 MB in the beginning and 315.1 MB in the end (delta: 174.1 MB). Free memory was 102.2 MB in the beginning and 219.9 MB in the end (delta: -117.7 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2020-08-21 20:35:43,565 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 20:35:43,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.61 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 165.0 MB in the end (delta: -63.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-21 20:35:43,567 INFO L168 Benchmark]: Boogie Preprocessor took 78.67 ms. Allocated memory is still 204.5 MB. Free memory was 165.0 MB in the beginning and 161.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-21 20:35:43,567 INFO L168 Benchmark]: RCFGBuilder took 785.84 ms. Allocated memory is still 204.5 MB. Free memory was 161.8 MB in the beginning and 100.8 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. [2020-08-21 20:35:43,568 INFO L168 Benchmark]: TraceAbstraction took 6788.54 ms. Allocated memory was 204.5 MB in the beginning and 315.1 MB in the end (delta: 110.6 MB). Free memory was 100.1 MB in the beginning and 219.9 MB in the end (delta: -119.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 20:35:43,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.61 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.0 MB in the beginning and 165.0 MB in the end (delta: -63.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.67 ms. Allocated memory is still 204.5 MB. Free memory was 165.0 MB in the beginning and 161.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 785.84 ms. Allocated memory is still 204.5 MB. Free memory was 161.8 MB in the beginning and 100.8 MB in the end (delta: 61.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6788.54 ms. Allocated memory was 204.5 MB in the beginning and 315.1 MB in the end (delta: 110.6 MB). Free memory was 100.1 MB in the beginning and 219.9 MB in the end (delta: -119.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 658]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L654] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; [L681] CALL foo() [L670] FCALL ldv_initialize() [L671] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L565] void *ptr = malloc(size); [L566] CALL assume_abort_if_not(ptr!=0) [L554] COND FALSE !(!cond) [L566] RET assume_abort_if_not(ptr!=0) [L567] return ptr; [L671] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L671] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L672] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L565] void *ptr = malloc(size); [L566] CALL assume_abort_if_not(ptr!=0) [L554] COND FALSE !(!cond) [L566] RET assume_abort_if_not(ptr!=0) [L567] return ptr; [L672] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) [L672] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L673] CALL mutex_lock(m1) [L658] CALL ldv_is_in_set(m, &mutexes) [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L644] COND FALSE !(&m->list != (s)) [L649] return 0; [L658] RET ldv_is_in_set(m, &mutexes) [L658] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L659] CALL ldv_set_add(m, &mutexes) [L625] CALL, EXPR ldv_is_in_set(new, s) [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L644] COND FALSE !(&m->list != (s)) [L649] return 0; [L625] RET, EXPR ldv_is_in_set(new, s) [L625] COND TRUE !ldv_is_in_set(new, s) [L626] struct ldv_list_element *le; [L627] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L565] void *ptr = malloc(size); [L566] CALL assume_abort_if_not(ptr!=0) [L554] COND FALSE !(!cond) [L566] RET assume_abort_if_not(ptr!=0) [L567] return ptr; [L627] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) [L627] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L628] le->e = new [L629] CALL ldv_list_add(&le->list, s) [L597] EXPR head->next [L597] CALL __ldv_list_add(new, head, head->next) [L585] next->prev = new [L586] new->next = next [L587] new->prev = prev [L588] prev->next = new [L597] RET __ldv_list_add(new, head, head->next) [L629] RET ldv_list_add(&le->list, s) [L659] RET ldv_set_add(m, &mutexes) [L673] RET mutex_lock(m1) [L674] CALL mutex_lock(m1) [L658] CALL ldv_is_in_set(m, &mutexes) [L643] struct ldv_list_element *m; [L644] EXPR (s)->next [L644] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L644] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) [L644] COND TRUE &m->list != (s) [L645] EXPR m->e [L645] COND TRUE m->e == e [L646] return 1; [L658] RET ldv_is_in_set(m, &mutexes) [L658] COND TRUE ldv_is_in_set(m, &mutexes) [L658] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 25 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.6s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 502 SDtfs, 793 SDslu, 408 SDs, 0 SdLazy, 2345 SolverSat, 461 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 121 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 392 NumberOfCodeBlocks, 392 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 301 ConstructedInterpolants, 0 QuantifiedInterpolants, 75929 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 119/165 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...