/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 interpolation-heuristic=FIRST --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 14:57:17,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 14:57:17,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 14:57:17,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 14:57:17,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 14:57:17,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 14:57:17,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 14:57:17,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 14:57:17,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 14:57:17,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 14:57:17,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 14:57:17,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 14:57:17,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 14:57:17,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 14:57:17,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 14:57:17,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 14:57:17,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 14:57:17,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 14:57:17,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 14:57:17,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 14:57:17,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 14:57:17,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 14:57:17,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 14:57:17,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 14:57:17,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 14:57:17,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 14:57:17,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 14:57:17,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 14:57:17,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 14:57:17,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 14:57:17,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 14:57:17,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 14:57:17,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 14:57:17,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 14:57:17,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 14:57:17,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 14:57:17,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 14:57:17,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 14:57:17,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 14:57:17,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 14:57:17,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 14:57:17,115 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 14:57:17,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 14:57:17,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 14:57:17,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 14:57:17,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 14:57:17,138 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 14:57:17,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 14:57:17,139 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 14:57:17,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 14:57:17,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 14:57:17,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 14:57:17,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 14:57:17,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 14:57:17,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 14:57:17,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 14:57:17,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 14:57:17,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 14:57:17,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 14:57:17,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 14:57:17,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 14:57:17,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 14:57:17,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 14:57:17,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 14:57:17,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 14:57:17,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 14:57:17,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 14:57:17,142 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 14:57:17,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 14:57:17,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 14:57:17,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 14:57:17,143 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 -> interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> interpolation-heuristic=FIRST;log-additional-information=true; [2020-08-21 14:57:17,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 14:57:17,433 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 14:57:17,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 14:57:17,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 14:57:17,438 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 14:57:17,439 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-08-21 14:57:17,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4064f705/684ecd9c45cc48a6846caae6ae05fa02/FLAG26a61693b [2020-08-21 14:57:18,031 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 14:57:18,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-08-21 14:57:18,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4064f705/684ecd9c45cc48a6846caae6ae05fa02/FLAG26a61693b [2020-08-21 14:57:18,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4064f705/684ecd9c45cc48a6846caae6ae05fa02 [2020-08-21 14:57:18,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 14:57:18,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 14:57:18,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 14:57:18,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 14:57:18,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 14:57:18,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:57:18" (1/1) ... [2020-08-21 14:57:18,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b30b002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:18, skipping insertion in model container [2020-08-21 14:57:18,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 02:57:18" (1/1) ... [2020-08-21 14:57:18,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 14:57:18,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 14:57:19,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:57:19,011 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 14:57:19,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 14:57:19,155 INFO L208 MainTranslator]: Completed translation [2020-08-21 14:57:19,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:19 WrapperNode [2020-08-21 14:57:19,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 14:57:19,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 14:57:19,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 14:57:19,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 14:57:19,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:19" (1/1) ... [2020-08-21 14:57:19,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:19" (1/1) ... [2020-08-21 14:57:19,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:19" (1/1) ... [2020-08-21 14:57:19,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:19" (1/1) ... [2020-08-21 14:57:19,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:19" (1/1) ... [2020-08-21 14:57:19,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:19" (1/1) ... [2020-08-21 14:57:19,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:19" (1/1) ... [2020-08-21 14:57:19,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 14:57:19,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 14:57:19,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 14:57:19,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 14:57:19,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:19" (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 14:57:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 14:57:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 14:57:19,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 14:57:19,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 14:57:19,308 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 14:57:19,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 14:57:19,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-08-21 14:57:19,308 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-08-21 14:57:19,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-08-21 14:57:19,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-08-21 14:57:19,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-08-21 14:57:19,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-08-21 14:57:19,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-08-21 14:57:19,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-08-21 14:57:19,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-08-21 14:57:19,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-21 14:57:19,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-08-21 14:57:19,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-08-21 14:57:19,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-08-21 14:57:19,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 14:57:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-08-21 14:57:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-08-21 14:57:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 14:57:19,313 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-08-21 14:57:19,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 14:57:19,315 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 14:57:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 14:57:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 14:57:19,316 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 14:57:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 14:57:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 14:57:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 14:57:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 14:57:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 14:57:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 14:57:19,317 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 14:57:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 14:57:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 14:57:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 14:57:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 14:57:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 14:57:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 14:57:19,318 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 14:57:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 14:57:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 14:57:19,319 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 14:57:19,320 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 14:57:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 14:57:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 14:57:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 14:57:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 14:57:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 14:57:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 14:57:19,321 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 14:57:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 14:57:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 14:57:19,322 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 14:57:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 14:57:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 14:57:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 14:57:19,323 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 14:57:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 14:57:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 14:57:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 14:57:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 14:57:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 14:57:19,324 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 14:57:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 14:57:19,325 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 14:57:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 14:57:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 14:57:19,326 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 14:57:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 14:57:19,327 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 14:57:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 14:57:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 14:57:19,328 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 14:57:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 14:57:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 14:57:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 14:57:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 14:57:19,329 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 14:57:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 14:57:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 14:57:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 14:57:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 14:57:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 14:57:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 14:57:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 14:57:19,330 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 14:57:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 14:57:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 14:57:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 14:57:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 14:57:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 14:57:19,331 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 14:57:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 14:57:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 14:57:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 14:57:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 14:57:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 14:57:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 14:57:19,332 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 14:57:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 14:57:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 14:57:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 14:57:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 14:57:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 14:57:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 14:57:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 14:57:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 14:57:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 14:57:19,333 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 14:57:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 14:57:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 14:57:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 14:57:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 14:57:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 14:57:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 14:57:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 14:57:19,334 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 14:57:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 14:57:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 14:57:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 14:57:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 14:57:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 14:57:19,335 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 14:57:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 14:57:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 14:57:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 14:57:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 14:57:19,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 14:57:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-08-21 14:57:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-08-21 14:57:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 14:57:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-08-21 14:57:19,337 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-08-21 14:57:19,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-08-21 14:57:19,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 14:57:19,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-08-21 14:57:19,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-08-21 14:57:19,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-08-21 14:57:19,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-08-21 14:57:19,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-21 14:57:19,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-08-21 14:57:19,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-08-21 14:57:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-08-21 14:57:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 14:57:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 14:57:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-08-21 14:57:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-08-21 14:57:19,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 14:57:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-08-21 14:57:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 14:57:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 14:57:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 14:57:19,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 14:57:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 14:57:20,021 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 14:57:20,022 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-21 14:57:20,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:57:20 BoogieIcfgContainer [2020-08-21 14:57:20,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 14:57:20,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 14:57:20,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 14:57:20,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 14:57:20,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 02:57:18" (1/3) ... [2020-08-21 14:57:20,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8ac288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:57:20, skipping insertion in model container [2020-08-21 14:57:20,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 02:57:19" (2/3) ... [2020-08-21 14:57:20,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8ac288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 02:57:20, skipping insertion in model container [2020-08-21 14:57:20,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 02:57:20" (3/3) ... [2020-08-21 14:57:20,037 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-08-21 14:57:20,049 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 14:57:20,058 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-08-21 14:57:20,074 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-08-21 14:57:20,102 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 14:57:20,102 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 14:57:20,103 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 14:57:20,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 14:57:20,103 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 14:57:20,103 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 14:57:20,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 14:57:20,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 14:57:20,126 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-08-21 14:57:20,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 14:57:20,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:57:20,135 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 14:57:20,136 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:57:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:57:20,143 INFO L82 PathProgramCache]: Analyzing trace with hash -326397870, now seen corresponding path program 1 times [2020-08-21 14:57:20,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:57:20,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043977888] [2020-08-21 14:57:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:57:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:20,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:57:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:57:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:20,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:57:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:20,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 14:57:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:20,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:20,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:57:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:20,493 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 14:57:20,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043977888] [2020-08-21 14:57:20,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:57:20,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 14:57:20,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380684333] [2020-08-21 14:57:20,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 14:57:20,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:57:20,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 14:57:20,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 14:57:20,520 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2020-08-21 14:57:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:57:20,799 INFO L93 Difference]: Finished difference Result 217 states and 268 transitions. [2020-08-21 14:57:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 14:57:20,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-08-21 14:57:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:57:20,814 INFO L225 Difference]: With dead ends: 217 [2020-08-21 14:57:20,815 INFO L226 Difference]: Without dead ends: 111 [2020-08-21 14:57:20,820 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 14:57:20,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-21 14:57:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2020-08-21 14:57:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-21 14:57:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-08-21 14:57:20,888 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2020-08-21 14:57:20,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:57:20,888 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-08-21 14:57:20,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 14:57:20,889 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-08-21 14:57:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 14:57:20,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:57:20,891 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 14:57:20,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 14:57:20,892 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:57:20,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:57:20,892 INFO L82 PathProgramCache]: Analyzing trace with hash -934339182, now seen corresponding path program 1 times [2020-08-21 14:57:20,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:57:20,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907268685] [2020-08-21 14:57:20,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:57:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:57:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:57:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:57:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 14:57:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:57:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,073 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 14:57:21,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907268685] [2020-08-21 14:57:21,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:57:21,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 14:57:21,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159043206] [2020-08-21 14:57:21,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 14:57:21,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:57:21,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 14:57:21,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 14:57:21,077 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 6 states. [2020-08-21 14:57:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:57:21,504 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2020-08-21 14:57:21,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 14:57:21,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-08-21 14:57:21,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:57:21,507 INFO L225 Difference]: With dead ends: 117 [2020-08-21 14:57:21,508 INFO L226 Difference]: Without dead ends: 115 [2020-08-21 14:57:21,509 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 14:57:21,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-21 14:57:21,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2020-08-21 14:57:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-08-21 14:57:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-08-21 14:57:21,551 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2020-08-21 14:57:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:57:21,552 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-08-21 14:57:21,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 14:57:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-08-21 14:57:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 14:57:21,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:57:21,554 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 14:57:21,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 14:57:21,556 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:57:21,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:57:21,557 INFO L82 PathProgramCache]: Analyzing trace with hash 640264123, now seen corresponding path program 1 times [2020-08-21 14:57:21,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:57:21,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012838049] [2020-08-21 14:57:21,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:57:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:57:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:57:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:57:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 14:57:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 14:57:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:21,859 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 14:57:21,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012838049] [2020-08-21 14:57:21,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 14:57:21,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 14:57:21,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10884397] [2020-08-21 14:57:21,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:57:21,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:57:21,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:57:21,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:57:21,863 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 7 states. [2020-08-21 14:57:22,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:57:22,999 INFO L93 Difference]: Finished difference Result 288 states and 346 transitions. [2020-08-21 14:57:23,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 14:57:23,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-08-21 14:57:23,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:57:23,005 INFO L225 Difference]: With dead ends: 288 [2020-08-21 14:57:23,005 INFO L226 Difference]: Without dead ends: 200 [2020-08-21 14:57:23,007 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 14:57:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-08-21 14:57:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 163. [2020-08-21 14:57:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-21 14:57:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 194 transitions. [2020-08-21 14:57:23,040 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 194 transitions. Word has length 42 [2020-08-21 14:57:23,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:57:23,041 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 194 transitions. [2020-08-21 14:57:23,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:57:23,041 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 194 transitions. [2020-08-21 14:57:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 14:57:23,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:57:23,044 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 14:57:23,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 14:57:23,045 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:57:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:57:23,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1149911364, now seen corresponding path program 1 times [2020-08-21 14:57:23,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:57:23,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264680348] [2020-08-21 14:57:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:57:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:57:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:57:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:57:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 14:57:23,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 14:57:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:57:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:57:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:57:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:57:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,245 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 14:57:23,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264680348] [2020-08-21 14:57:23,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:57:23,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 14:57:23,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632877547] [2020-08-21 14:57:23,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 14:57:23,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:57:23,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 14:57:23,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 14:57:23,248 INFO L87 Difference]: Start difference. First operand 163 states and 194 transitions. Second operand 7 states. [2020-08-21 14:57:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:57:23,757 INFO L93 Difference]: Finished difference Result 296 states and 353 transitions. [2020-08-21 14:57:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 14:57:23,759 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2020-08-21 14:57:23,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:57:23,765 INFO L225 Difference]: With dead ends: 296 [2020-08-21 14:57:23,765 INFO L226 Difference]: Without dead ends: 171 [2020-08-21 14:57:23,771 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 14:57:23,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-21 14:57:23,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2020-08-21 14:57:23,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-21 14:57:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 200 transitions. [2020-08-21 14:57:23,832 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 200 transitions. Word has length 90 [2020-08-21 14:57:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:57:23,833 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 200 transitions. [2020-08-21 14:57:23,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 14:57:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 200 transitions. [2020-08-21 14:57:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-08-21 14:57:23,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:57:23,841 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 14:57:23,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 14:57:23,841 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:57:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:57:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1610969230, now seen corresponding path program 1 times [2020-08-21 14:57:23,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:57:23,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807019050] [2020-08-21 14:57:23,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:57:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 14:57:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 14:57:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:57:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 14:57:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:23,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-21 14:57:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:24,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:24,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:57:24,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:24,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:24,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 14:57:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:24,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:24,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 14:57:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:24,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 14:57:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:24,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-21 14:57:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 14:57:24,257 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 14:57:24,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807019050] [2020-08-21 14:57:24,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 14:57:24,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 14:57:24,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137297157] [2020-08-21 14:57:24,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 14:57:24,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 14:57:24,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 14:57:24,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-08-21 14:57:24,260 INFO L87 Difference]: Start difference. First operand 169 states and 200 transitions. Second operand 15 states. [2020-08-21 14:57:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 14:57:26,977 INFO L93 Difference]: Finished difference Result 422 states and 497 transitions. [2020-08-21 14:57:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-21 14:57:26,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 90 [2020-08-21 14:57:26,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 14:57:26,981 INFO L225 Difference]: With dead ends: 422 [2020-08-21 14:57:26,981 INFO L226 Difference]: Without dead ends: 235 [2020-08-21 14:57:26,983 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 14:57:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-21 14:57:27,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 179. [2020-08-21 14:57:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-08-21 14:57:27,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions. [2020-08-21 14:57:27,009 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 90 [2020-08-21 14:57:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 14:57:27,010 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions. [2020-08-21 14:57:27,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 14:57:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions. [2020-08-21 14:57:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-08-21 14:57:27,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 14:57:27,012 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 14:57:27,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 14:57:27,013 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 14:57:27,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 14:57:27,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1106436747, now seen corresponding path program 1 times [2020-08-21 14:57:27,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 14:57:27,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166333907] [2020-08-21 14:57:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 14:57:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 14:57:27,053 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 14:57:27,054 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 14:57:27,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 14:57:27,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 02:57:27 BoogieIcfgContainer [2020-08-21 14:57:27,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 14:57:27,083 INFO L168 Benchmark]: Toolchain (without parser) took 8748.89 ms. Allocated memory was 140.0 MB in the beginning and 318.8 MB in the end (delta: 178.8 MB). Free memory was 101.4 MB in the beginning and 263.4 MB in the end (delta: -161.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-08-21 14:57:27,084 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 14:57:27,085 INFO L168 Benchmark]: CACSL2BoogieTranslator took 821.97 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 165.4 MB in the end (delta: -64.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-21 14:57:27,086 INFO L168 Benchmark]: Boogie Preprocessor took 78.40 ms. Allocated memory is still 203.4 MB. Free memory was 165.4 MB in the beginning and 162.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-21 14:57:27,087 INFO L168 Benchmark]: RCFGBuilder took 791.03 ms. Allocated memory is still 203.4 MB. Free memory was 162.1 MB in the beginning and 101.4 MB in the end (delta: 60.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. [2020-08-21 14:57:27,088 INFO L168 Benchmark]: TraceAbstraction took 7052.46 ms. Allocated memory was 203.4 MB in the beginning and 318.8 MB in the end (delta: 115.3 MB). Free memory was 101.4 MB in the beginning and 263.4 MB in the end (delta: -162.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 14:57:27,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 821.97 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 165.4 MB in the end (delta: -64.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.40 ms. Allocated memory is still 203.4 MB. Free memory was 165.4 MB in the beginning and 162.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 791.03 ms. Allocated memory is still 203.4 MB. Free memory was 162.1 MB in the beginning and 101.4 MB in the end (delta: 60.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7052.46 ms. Allocated memory was 203.4 MB in the beginning and 318.8 MB in the end (delta: 115.3 MB). Free memory was 101.4 MB in the beginning and 263.4 MB in the end (delta: -162.0 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: 6.9s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 503 SDtfs, 793 SDslu, 418 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, 1.8s 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: 0.2s 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...