/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:22:01,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:22:01,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:22:01,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:22:01,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:22:01,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:22:01,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:22:01,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:22:01,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:22:01,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:22:01,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:22:01,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:22:01,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:22:01,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:22:01,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:22:01,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:22:01,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:22:01,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:22:01,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:22:01,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:22:01,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:22:01,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:22:01,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:22:01,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:22:01,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:22:01,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:22:01,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:22:02,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:22:02,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:22:02,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:22:02,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:22:02,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:22:02,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:22:02,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:22:02,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:22:02,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:22:02,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:22:02,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:22:02,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:22:02,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:22:02,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:22:02,010 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 [2020-08-19 00:22:02,059 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:22:02,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:22:02,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:22:02,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:22:02,061 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:22:02,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:22:02,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:22:02,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:22:02,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:22:02,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:22:02,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:22:02,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:22:02,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:22:02,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:22:02,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:22:02,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:22:02,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:22:02,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:22:02,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:22:02,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:22:02,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:22:02,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:22:02,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:22:02,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:22:02,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:22:02,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:22:02,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:22:02,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:22:02,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:22:02,070 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:22:02,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:22:02,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:22:02,416 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:22:02,419 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:22:02,421 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:22:02,421 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-08-19 00:22:02,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1031d268/8490a606d5e9478fb0a9ef34686e2825/FLAG8fbe3096e [2020-08-19 00:22:03,111 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:22:03,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-08-19 00:22:03,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1031d268/8490a606d5e9478fb0a9ef34686e2825/FLAG8fbe3096e [2020-08-19 00:22:03,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1031d268/8490a606d5e9478fb0a9ef34686e2825 [2020-08-19 00:22:03,336 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:22:03,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:22:03,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:22:03,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:22:03,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:22:03,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:22:03" (1/1) ... [2020-08-19 00:22:03,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b73c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:03, skipping insertion in model container [2020-08-19 00:22:03,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:22:03" (1/1) ... [2020-08-19 00:22:03,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:22:03,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:22:03,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:22:03,904 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:22:03,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:22:04,024 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:22:04,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:04 WrapperNode [2020-08-19 00:22:04,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:22:04,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:22:04,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:22:04,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:22:04,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:04" (1/1) ... [2020-08-19 00:22:04,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:04" (1/1) ... [2020-08-19 00:22:04,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:04" (1/1) ... [2020-08-19 00:22:04,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:04" (1/1) ... [2020-08-19 00:22:04,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:04" (1/1) ... [2020-08-19 00:22:04,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:04" (1/1) ... [2020-08-19 00:22:04,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:04" (1/1) ... [2020-08-19 00:22:04,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:22:04,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:22:04,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:22:04,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:22:04,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:04" (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 [2020-08-19 00:22:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:22:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:22:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-19 00:22:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-19 00:22:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 00:22:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 00:22:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-08-19 00:22:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-08-19 00:22:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-08-19 00:22:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-08-19 00:22:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-08-19 00:22:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-08-19 00:22:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-08-19 00:22:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-08-19 00:22:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-08-19 00:22:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-19 00:22:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-08-19 00:22:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-08-19 00:22:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-08-19 00:22:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 00:22:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-19 00:22:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-19 00:22:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 00:22:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-08-19 00:22:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:22:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-19 00:22:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-19 00:22:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 00:22:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 00:22:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 00:22:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 00:22:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 00:22:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 00:22:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 00:22:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 00:22:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 00:22:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 00:22:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 00:22:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 00:22:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 00:22:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 00:22:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 00:22:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 00:22:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 00:22:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 00:22:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 00:22:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 00:22:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 00:22:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 00:22:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 00:22:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 00:22:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 00:22:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 00:22:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 00:22:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 00:22:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 00:22:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 00:22:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 00:22:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 00:22:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 00:22:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 00:22:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 00:22:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 00:22:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 00:22:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 00:22:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 00:22:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 00:22:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 00:22:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 00:22:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 00:22:04,186 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 00:22:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 00:22:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 00:22:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 00:22:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 00:22:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 00:22:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 00:22:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:22:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 00:22:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 00:22:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:22:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 00:22:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 00:22:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 00:22:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 00:22:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 00:22:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 00:22:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 00:22:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 00:22:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 00:22:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 00:22:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 00:22:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 00:22:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 00:22:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 00:22:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 00:22:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 00:22:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 00:22:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 00:22:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 00:22:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 00:22:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 00:22:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 00:22:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 00:22:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 00:22:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 00:22:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 00:22:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 00:22:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 00:22:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 00:22:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 00:22:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 00:22:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 00:22:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 00:22:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 00:22:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 00:22:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 00:22:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 00:22:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 00:22:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 00:22:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 00:22:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 00:22:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 00:22:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 00:22:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 00:22:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 00:22:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 00:22:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:22:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 00:22:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:22:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 00:22:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:22:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-08-19 00:22:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-08-19 00:22:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:22:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-08-19 00:22:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-08-19 00:22:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-08-19 00:22:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:22:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-08-19 00:22:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-08-19 00:22:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-08-19 00:22:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-08-19 00:22:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-19 00:22:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-08-19 00:22:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-08-19 00:22:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-08-19 00:22:04,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:22:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 00:22:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-19 00:22:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-19 00:22:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 00:22:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-08-19 00:22:04,199 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:22:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:22:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:22:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 00:22:04,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:22:04,942 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:22:04,942 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-19 00:22:04,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:22:04 BoogieIcfgContainer [2020-08-19 00:22:04,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:22:04,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:22:04,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:22:04,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:22:04,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:22:03" (1/3) ... [2020-08-19 00:22:04,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d521f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:22:04, skipping insertion in model container [2020-08-19 00:22:04,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:22:04" (2/3) ... [2020-08-19 00:22:04,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d521f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:22:04, skipping insertion in model container [2020-08-19 00:22:04,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:22:04" (3/3) ... [2020-08-19 00:22:04,959 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-08-19 00:22:04,969 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:22:04,977 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-19 00:22:04,991 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-19 00:22:05,011 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:22:05,012 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:22:05,012 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:22:05,012 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:22:05,013 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:22:05,013 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:22:05,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:22:05,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:22:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-08-19 00:22:05,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-19 00:22:05,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:22:05,045 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] [2020-08-19 00:22:05,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:22:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:22:05,052 INFO L82 PathProgramCache]: Analyzing trace with hash -326397870, now seen corresponding path program 1 times [2020-08-19 00:22:05,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:22:05,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460882556] [2020-08-19 00:22:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:22:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:22:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:22:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:22:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 00:22:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:22:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-19 00:22:05,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460882556] [2020-08-19 00:22:05,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:22:05,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:22:05,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763314424] [2020-08-19 00:22:05,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:22:05,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:22:05,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:22:05,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:22:05,445 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2020-08-19 00:22:05,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:22:05,720 INFO L93 Difference]: Finished difference Result 217 states and 268 transitions. [2020-08-19 00:22:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:22:05,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-08-19 00:22:05,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:22:05,741 INFO L225 Difference]: With dead ends: 217 [2020-08-19 00:22:05,742 INFO L226 Difference]: Without dead ends: 111 [2020-08-19 00:22:05,749 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 [2020-08-19 00:22:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-19 00:22:05,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2020-08-19 00:22:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-19 00:22:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-08-19 00:22:05,813 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2020-08-19 00:22:05,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:22:05,814 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-08-19 00:22:05,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:22:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-08-19 00:22:05,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-19 00:22:05,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:22:05,817 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] [2020-08-19 00:22:05,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:22:05,818 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:22:05,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:22:05,818 INFO L82 PathProgramCache]: Analyzing trace with hash -934339182, now seen corresponding path program 1 times [2020-08-19 00:22:05,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:22:05,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1882753919] [2020-08-19 00:22:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:22:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:22:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:22:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:22:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 00:22:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:05,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:22:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-19 00:22:06,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1882753919] [2020-08-19 00:22:06,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:22:06,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:22:06,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382997078] [2020-08-19 00:22:06,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:22:06,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:22:06,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:22:06,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:22:06,031 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 6 states. [2020-08-19 00:22:06,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:22:06,524 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2020-08-19 00:22:06,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:22:06,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-08-19 00:22:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:22:06,528 INFO L225 Difference]: With dead ends: 117 [2020-08-19 00:22:06,528 INFO L226 Difference]: Without dead ends: 115 [2020-08-19 00:22:06,529 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 [2020-08-19 00:22:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-19 00:22:06,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2020-08-19 00:22:06,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-19 00:22:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-08-19 00:22:06,566 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2020-08-19 00:22:06,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:22:06,567 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-08-19 00:22:06,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:22:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-08-19 00:22:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-19 00:22:06,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:22:06,572 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] [2020-08-19 00:22:06,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:22:06,573 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:22:06,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:22:06,573 INFO L82 PathProgramCache]: Analyzing trace with hash 640264123, now seen corresponding path program 1 times [2020-08-19 00:22:06,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:22:06,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478394312] [2020-08-19 00:22:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:22:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:06,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:22:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:22:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:06,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:22:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:06,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:06,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 00:22:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:06,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:06,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:22:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-19 00:22:06,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478394312] [2020-08-19 00:22:06,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:22:06,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:22:06,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320023056] [2020-08-19 00:22:06,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:22:06,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:22:06,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:22:06,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:22:06,773 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 7 states. [2020-08-19 00:22:07,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:22:07,910 INFO L93 Difference]: Finished difference Result 288 states and 346 transitions. [2020-08-19 00:22:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 00:22:07,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-08-19 00:22:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:22:07,915 INFO L225 Difference]: With dead ends: 288 [2020-08-19 00:22:07,915 INFO L226 Difference]: Without dead ends: 200 [2020-08-19 00:22:07,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:22:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-19 00:22:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 163. [2020-08-19 00:22:07,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-19 00:22:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 194 transitions. [2020-08-19 00:22:07,947 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 194 transitions. Word has length 42 [2020-08-19 00:22:07,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:22:07,948 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 194 transitions. [2020-08-19 00:22:07,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:22:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 194 transitions. [2020-08-19 00:22:07,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 00:22:07,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:22:07,952 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] [2020-08-19 00:22:07,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:22:07,953 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:22:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:22:07,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1149911364, now seen corresponding path program 1 times [2020-08-19 00:22:07,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:22:07,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13602090] [2020-08-19 00:22:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:22:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:22:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:22:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:22:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 00:22:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 00:22:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:22:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:22:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:22:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 00:22:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-08-19 00:22:08,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13602090] [2020-08-19 00:22:08,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:22:08,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 00:22:08,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513432067] [2020-08-19 00:22:08,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:22:08,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:22:08,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:22:08,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:22:08,158 INFO L87 Difference]: Start difference. First operand 163 states and 194 transitions. Second operand 7 states. [2020-08-19 00:22:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:22:08,700 INFO L93 Difference]: Finished difference Result 296 states and 353 transitions. [2020-08-19 00:22:08,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 00:22:08,700 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-08-19 00:22:08,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:22:08,703 INFO L225 Difference]: With dead ends: 296 [2020-08-19 00:22:08,703 INFO L226 Difference]: Without dead ends: 171 [2020-08-19 00:22:08,705 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 [2020-08-19 00:22:08,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-19 00:22:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-08-19 00:22:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-19 00:22:08,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 200 transitions. [2020-08-19 00:22:08,750 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 200 transitions. Word has length 90 [2020-08-19 00:22:08,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:22:08,751 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 200 transitions. [2020-08-19 00:22:08,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:22:08,751 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 200 transitions. [2020-08-19 00:22:08,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-19 00:22:08,756 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:22:08,757 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] [2020-08-19 00:22:08,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:22:08,757 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:22:08,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:22:08,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1610969230, now seen corresponding path program 1 times [2020-08-19 00:22:08,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:22:08,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164061352] [2020-08-19 00:22:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:22:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:22:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:22:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:22:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 00:22:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 00:22:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:09,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:22:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:09,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:09,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:22:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:09,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:09,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:22:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:09,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:22:09,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:09,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 00:22:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:22:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-08-19 00:22:09,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164061352] [2020-08-19 00:22:09,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:22:09,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 00:22:09,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199691956] [2020-08-19 00:22:09,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 00:22:09,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:22:09,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 00:22:09,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:22:09,221 INFO L87 Difference]: Start difference. First operand 169 states and 200 transitions. Second operand 15 states. [2020-08-19 00:22:11,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:22:11,963 INFO L93 Difference]: Finished difference Result 422 states and 497 transitions. [2020-08-19 00:22:11,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-19 00:22:11,965 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-08-19 00:22:11,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:22:11,967 INFO L225 Difference]: With dead ends: 422 [2020-08-19 00:22:11,967 INFO L226 Difference]: Without dead ends: 235 [2020-08-19 00:22:11,970 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 [2020-08-19 00:22:11,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-19 00:22:11,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 179. [2020-08-19 00:22:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-08-19 00:22:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions. [2020-08-19 00:22:11,991 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 90 [2020-08-19 00:22:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:22:11,992 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions. [2020-08-19 00:22:11,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 00:22:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions. [2020-08-19 00:22:11,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-19 00:22:11,994 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:22:11,994 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] [2020-08-19 00:22:11,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:22:11,994 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:22:11,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:22:11,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1106436747, now seen corresponding path program 1 times [2020-08-19 00:22:11,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:22:11,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307447460] [2020-08-19 00:22:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:22:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 00:22:12,046 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 00:22:12,047 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:22:12,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:22:12,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:22:12 BoogieIcfgContainer [2020-08-19 00:22:12,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:22:12,090 INFO L168 Benchmark]: Toolchain (without parser) took 8750.67 ms. Allocated memory was 141.0 MB in the beginning and 320.3 MB in the end (delta: 179.3 MB). Free memory was 103.1 MB in the beginning and 243.0 MB in the end (delta: -139.9 MB). Peak memory consumption was 39.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:22:12,092 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-19 00:22:12,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.01 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 165.2 MB in the end (delta: -62.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:22:12,100 INFO L168 Benchmark]: Boogie Preprocessor took 80.88 ms. Allocated memory is still 203.9 MB. Free memory was 165.2 MB in the beginning and 161.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-08-19 00:22:12,101 INFO L168 Benchmark]: RCFGBuilder took 842.81 ms. Allocated memory is still 203.9 MB. Free memory was 161.4 MB in the beginning and 101.1 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:22:12,102 INFO L168 Benchmark]: TraceAbstraction took 7134.27 ms. Allocated memory was 203.9 MB in the beginning and 320.3 MB in the end (delta: 116.4 MB). Free memory was 101.1 MB in the beginning and 243.0 MB in the end (delta: -141.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 00:22:12,114 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 687.01 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 165.2 MB in the end (delta: -62.5 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.88 ms. Allocated memory is still 203.9 MB. Free memory was 165.2 MB in the beginning and 161.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 842.81 ms. Allocated memory is still 203.9 MB. Free memory was 161.4 MB in the beginning and 101.1 MB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7134.27 ms. Allocated memory was 203.9 MB in the beginning and 320.3 MB in the end (delta: 116.4 MB). Free memory was 101.1 MB in the beginning and 243.0 MB in the end (delta: -141.9 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: 7.0s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 502 SDtfs, 793 SDslu, 408 SDs, 0 SdLazy, 2355 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, 1.8s 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, 0.2s 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...