/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:02:38,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:02:38,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:02:38,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 01:02:38,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 01:02:38,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 01:02:38,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 01:02:38,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 01:02:38,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 01:02:38,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 01:02:38,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 01:02:38,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 01:02:38,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:02:38,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:02:38,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:02:38,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:02:38,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:02:38,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:02:38,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:02:38,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:02:38,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:02:38,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:02:38,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:02:38,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:02:38,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 01:02:38,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:02:38,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:02:38,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:02:38,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 01:02:38,229 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:02:38,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:02:38,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:02:38,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:02:38,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:02:38,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:02:38,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:02:38,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:02:38,230 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:02:38,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:02:38,230 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:02:38,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:02:38,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:02:38,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:02:38,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:02:38,231 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:02:38,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:02:38,231 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:02:38,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:02:38,231 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:02:38,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:02:38,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:02:38,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:02:38,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:02:38,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:02:38,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:02:38,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:02:38,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:02:38,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:02:38,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:02:38,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:02:38,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:02:38,241 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:02:38,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:02:38,241 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:02:38,241 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:02:38,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:02:38,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:02:38,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:02:38,403 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:02:38,403 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:02:38,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2023-04-02 01:02:39,322 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:02:39,558 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:02:39,559 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2023-04-02 01:02:39,567 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28befa457/6858be8f3bea48c6a8d7d4705778bc29/FLAG1a272b346 [2023-04-02 01:02:39,576 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28befa457/6858be8f3bea48c6a8d7d4705778bc29 [2023-04-02 01:02:39,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:02:39,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:02:39,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:02:39,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:02:39,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:02:39,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c997e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39, skipping insertion in model container [2023-04-02 01:02:39,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:02:39,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:02:39,818 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i[25842,25855] [2023-04-02 01:02:39,822 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i[25967,25980] [2023-04-02 01:02:39,822 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i[26082,26095] [2023-04-02 01:02:39,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:02:39,834 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:02:39,869 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i[25842,25855] [2023-04-02 01:02:39,873 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i[25967,25980] [2023-04-02 01:02:39,874 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i[26082,26095] [2023-04-02 01:02:39,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:02:39,903 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:02:39,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39 WrapperNode [2023-04-02 01:02:39,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:02:39,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:02:39,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:02:39,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:02:39,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,959 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:02:39,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:02:39,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:02:39,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:02:39,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39" (1/1) ... [2023-04-02 01:02:39,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:02:39,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:02:39,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 01:02:39,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 01:02:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:02:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:02:40,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-02 01:02:40,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-02 01:02:40,016 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:02:40,016 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:02:40,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-02 01:02:40,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-04-02 01:02:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-04-02 01:02:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-04-02 01:02:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2023-04-02 01:02:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-04-02 01:02:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2023-04-02 01:02:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-04-02 01:02:40,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2023-04-02 01:02:40,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2023-04-02 01:02:40,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2023-04-02 01:02:40,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2023-04-02 01:02:40,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-04-02 01:02:40,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2023-04-02 01:02:40,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-02 01:02:40,019 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-04-02 01:02:40,019 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-02 01:02:40,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-02 01:02:40,019 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-04-02 01:02:40,019 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:02:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-02 01:02:40,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-02 01:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 01:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 01:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 01:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 01:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 01:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 01:02:40,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 01:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 01:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 01:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 01:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 01:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 01:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 01:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 01:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 01:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 01:02:40,021 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 01:02:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 01:02:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 01:02:40,022 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 01:02:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 01:02:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 01:02:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 01:02:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 01:02:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 01:02:40,037 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 01:02:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 01:02:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 01:02:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 01:02:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 01:02:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-02 01:02:40,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2023-04-02 01:02:40,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-04-02 01:02:40,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2023-04-02 01:02:40,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:02:40,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-02 01:02:40,045 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-04-02 01:02:40,045 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-02 01:02:40,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-02 01:02:40,045 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-04-02 01:02:40,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:02:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:02:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:02:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-02 01:02:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:02:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:02:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:02:40,286 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:02:40,288 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:02:40,560 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:02:40,566 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:02:40,566 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-04-02 01:02:40,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:02:40 BoogieIcfgContainer [2023-04-02 01:02:40,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:02:40,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:02:40,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:02:40,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:02:40,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:02:39" (1/3) ... [2023-04-02 01:02:40,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b492e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:02:40, skipping insertion in model container [2023-04-02 01:02:40,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:39" (2/3) ... [2023-04-02 01:02:40,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29b492e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:02:40, skipping insertion in model container [2023-04-02 01:02:40,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:02:40" (3/3) ... [2023-04-02 01:02:40,581 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2023-04-02 01:02:40,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:02:40,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-04-02 01:02:40,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:02:40,645 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@79603c12, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:02:40,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-04-02 01:02:40,648 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 67 states have internal predecessors, (77), 24 states have call successors, (24), 18 states have call predecessors, (24), 18 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-04-02 01:02:40,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-02 01:02:40,653 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:40,654 INFO L195 NwaCegarLoop]: 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] [2023-04-02 01:02:40,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:40,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:40,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1577647300, now seen corresponding path program 1 times [2023-04-02 01:02:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:40,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841685366] [2023-04-02 01:02:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:40,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:40,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:40,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:40,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:02:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 01:02:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 01:02:40,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:40,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841685366] [2023-04-02 01:02:40,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841685366] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:40,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:40,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 01:02:40,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535558091] [2023-04-02 01:02:40,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:40,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 01:02:40,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:40,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 01:02:40,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 01:02:40,960 INFO L87 Difference]: Start difference. First operand has 110 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 67 states have internal predecessors, (77), 24 states have call successors, (24), 18 states have call predecessors, (24), 18 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 01:02:41,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:41,285 INFO L93 Difference]: Finished difference Result 217 states and 268 transitions. [2023-04-02 01:02:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 01:02:41,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-04-02 01:02:41,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:41,295 INFO L225 Difference]: With dead ends: 217 [2023-04-02 01:02:41,295 INFO L226 Difference]: Without dead ends: 111 [2023-04-02 01:02:41,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:02:41,300 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 143 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:41,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 7 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:02:41,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-04-02 01:02:41,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2023-04-02 01:02:41,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 56 states have (on average 1.125) internal successors, (63), 59 states have internal predecessors, (63), 24 states have call successors, (24), 18 states have call predecessors, (24), 15 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-04-02 01:02:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2023-04-02 01:02:41,337 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2023-04-02 01:02:41,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:41,337 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2023-04-02 01:02:41,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 01:02:41,338 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2023-04-02 01:02:41,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-02 01:02:41,339 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:41,339 INFO L195 NwaCegarLoop]: 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] [2023-04-02 01:02:41,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:02:41,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:41,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:41,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1824276466, now seen corresponding path program 1 times [2023-04-02 01:02:41,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:41,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890149544] [2023-04-02 01:02:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:41,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:41,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:41,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:02:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:41,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:41,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 01:02:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 01:02:41,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:41,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890149544] [2023-04-02 01:02:41,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890149544] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:41,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:41,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 01:02:41,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961855311] [2023-04-02 01:02:41,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:41,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 01:02:41,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:41,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 01:02:41,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:02:41,536 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 01:02:41,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:41,876 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2023-04-02 01:02:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 01:02:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2023-04-02 01:02:41,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:41,882 INFO L225 Difference]: With dead ends: 117 [2023-04-02 01:02:41,882 INFO L226 Difference]: Without dead ends: 115 [2023-04-02 01:02:41,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-04-02 01:02:41,883 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 142 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:41,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 7 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:02:41,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-04-02 01:02:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 102. [2023-04-02 01:02:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 59 states have (on average 1.11864406779661) internal successors, (66), 62 states have internal predecessors, (66), 24 states have call successors, (24), 18 states have call predecessors, (24), 16 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2023-04-02 01:02:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2023-04-02 01:02:41,909 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2023-04-02 01:02:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:41,910 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2023-04-02 01:02:41,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-04-02 01:02:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2023-04-02 01:02:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-04-02 01:02:41,913 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:41,913 INFO L195 NwaCegarLoop]: 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] [2023-04-02 01:02:41,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:02:41,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:41,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:41,914 INFO L85 PathProgramCache]: Analyzing trace with hash -896087525, now seen corresponding path program 1 times [2023-04-02 01:02:41,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:41,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536812391] [2023-04-02 01:02:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:42,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:42,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:02:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-04-02 01:02:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 01:02:42,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:42,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536812391] [2023-04-02 01:02:42,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536812391] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:42,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:42,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 01:02:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863387778] [2023-04-02 01:02:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:42,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 01:02:42,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:42,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 01:02:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:02:42,313 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 01:02:42,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:42,987 INFO L93 Difference]: Finished difference Result 288 states and 346 transitions. [2023-04-02 01:02:42,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 01:02:42,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-04-02 01:02:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:42,989 INFO L225 Difference]: With dead ends: 288 [2023-04-02 01:02:42,989 INFO L226 Difference]: Without dead ends: 200 [2023-04-02 01:02:42,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2023-04-02 01:02:42,991 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 282 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:42,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 6 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 01:02:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-04-02 01:02:43,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 163. [2023-04-02 01:02:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 98 states have (on average 1.163265306122449) internal successors, (114), 104 states have internal predecessors, (114), 34 states have call successors, (34), 25 states have call predecessors, (34), 28 states have return successors, (46), 33 states have call predecessors, (46), 31 states have call successors, (46) [2023-04-02 01:02:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 194 transitions. [2023-04-02 01:02:43,023 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 194 transitions. Word has length 42 [2023-04-02 01:02:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:43,024 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 194 transitions. [2023-04-02 01:02:43,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-04-02 01:02:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 194 transitions. [2023-04-02 01:02:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 01:02:43,029 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:43,029 INFO L195 NwaCegarLoop]: 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] [2023-04-02 01:02:43,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 01:02:43,030 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:43,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1630164508, now seen corresponding path program 1 times [2023-04-02 01:02:43,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:43,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040092870] [2023-04-02 01:02:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:43,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:02:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:02:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:02:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 01:02:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-04-02 01:02:43,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040092870] [2023-04-02 01:02:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040092870] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:02:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556712677] [2023-04-02 01:02:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:43,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:02:43,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:02:43,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:02:43,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 01:02:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:43,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 01:02:43,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:02:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-02 01:02:43,499 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 01:02:43,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556712677] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:43,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:02:43,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-04-02 01:02:43,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839935331] [2023-04-02 01:02:43,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:43,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 01:02:43,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:43,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 01:02:43,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:02:43,501 INFO L87 Difference]: Start difference. First operand 163 states and 194 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-02 01:02:43,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:43,534 INFO L93 Difference]: Finished difference Result 294 states and 350 transitions. [2023-04-02 01:02:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 01:02:43,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 90 [2023-04-02 01:02:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:43,562 INFO L225 Difference]: With dead ends: 294 [2023-04-02 01:02:43,563 INFO L226 Difference]: Without dead ends: 169 [2023-04-02 01:02:43,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:02:43,567 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:43,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 01:02:43,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-04-02 01:02:43,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2023-04-02 01:02:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 108 states have internal predecessors, (119), 34 states have call successors, (34), 25 states have call predecessors, (34), 29 states have return successors, (47), 35 states have call predecessors, (47), 31 states have call successors, (47) [2023-04-02 01:02:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 200 transitions. [2023-04-02 01:02:43,584 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 200 transitions. Word has length 90 [2023-04-02 01:02:43,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:43,584 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 200 transitions. [2023-04-02 01:02:43,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-04-02 01:02:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 200 transitions. [2023-04-02 01:02:43,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 01:02:43,585 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:43,585 INFO L195 NwaCegarLoop]: 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] [2023-04-02 01:02:43,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 01:02:43,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:02:43,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:43,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:43,794 INFO L85 PathProgramCache]: Analyzing trace with hash 96077806, now seen corresponding path program 1 times [2023-04-02 01:02:43,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:43,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139714721] [2023-04-02 01:02:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:43,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:02:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:02:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 01:02:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 01:02:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 01:02:44,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:44,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139714721] [2023-04-02 01:02:44,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139714721] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:02:44,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99284392] [2023-04-02 01:02:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:44,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:02:44,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:02:44,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:02:44,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 01:02:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:44,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 57 conjunts are in the unsatisfiable core [2023-04-02 01:02:44,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:02:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-02 01:02:45,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 01:02:45,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99284392] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:45,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 01:02:45,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-04-02 01:02:45,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720213771] [2023-04-02 01:02:45,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:45,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 01:02:45,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 01:02:45,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:02:45,006 INFO L87 Difference]: Start difference. First operand 169 states and 200 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-02 01:02:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:45,819 INFO L93 Difference]: Finished difference Result 363 states and 430 transitions. [2023-04-02 01:02:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 01:02:45,820 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 90 [2023-04-02 01:02:45,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:45,822 INFO L225 Difference]: With dead ends: 363 [2023-04-02 01:02:45,822 INFO L226 Difference]: Without dead ends: 224 [2023-04-02 01:02:45,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=872, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 01:02:45,823 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 268 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:45,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 343 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 01:02:45,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-04-02 01:02:45,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 161. [2023-04-02 01:02:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 106 states have internal predecessors, (115), 31 states have call successors, (31), 25 states have call predecessors, (31), 26 states have return successors, (39), 29 states have call predecessors, (39), 28 states have call successors, (39) [2023-04-02 01:02:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2023-04-02 01:02:45,844 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 90 [2023-04-02 01:02:45,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:45,844 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2023-04-02 01:02:45,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-04-02 01:02:45,844 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2023-04-02 01:02:45,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-04-02 01:02:45,845 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:45,845 INFO L195 NwaCegarLoop]: 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] [2023-04-02 01:02:45,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 01:02:46,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:02:46,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:46,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1252786219, now seen corresponding path program 1 times [2023-04-02 01:02:46,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:46,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118206320] [2023-04-02 01:02:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:46,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:02:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:02:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:02:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:02:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 01:02:49,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:49,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118206320] [2023-04-02 01:02:49,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118206320] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:02:49,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780455780] [2023-04-02 01:02:49,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:49,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:02:49,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:02:49,970 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:02:49,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 01:02:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 215 conjunts are in the unsatisfiable core [2023-04-02 01:02:50,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:02:50,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2023-04-02 01:02:50,619 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 01:02:50,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-04-02 01:02:50,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2023-04-02 01:02:50,958 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-04-02 01:02:50,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-04-02 01:02:52,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:02:52,568 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:02:52,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:02:52,572 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:02:52,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-04-02 01:02:52,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:02:52,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:02:52,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:02:52,624 INFO L321 Elim1Store]: treesize reduction 158, result has 24.0 percent of original size [2023-04-02 01:02:52,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 151 treesize of output 129 [2023-04-02 01:02:52,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:02:52,653 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-04-02 01:02:52,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 250 treesize of output 150 [2023-04-02 01:02:52,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:02:52,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 110 [2023-04-02 01:02:52,689 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2023-04-02 01:02:52,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 118 treesize of output 94 [2023-04-02 01:02:52,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2023-04-02 01:02:52,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:02:52,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:02:52,726 INFO L321 Elim1Store]: treesize reduction 8, result has 79.5 percent of original size [2023-04-02 01:02:52,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 43 [2023-04-02 01:02:52,745 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:02:52,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2023-04-02 01:02:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-04-02 01:02:53,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:02:55,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780455780] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:02:55,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:02:55,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 67 [2023-04-02 01:02:55,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533751209] [2023-04-02 01:02:55,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:02:55,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-04-02 01:02:55,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:55,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-04-02 01:02:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=5077, Unknown=19, NotChecked=0, Total=5402 [2023-04-02 01:02:55,185 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand has 67 states, 54 states have (on average 1.6481481481481481) internal successors, (89), 48 states have internal predecessors, (89), 25 states have call successors, (35), 16 states have call predecessors, (35), 21 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) [2023-04-02 01:03:04,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:03:04,410 INFO L93 Difference]: Finished difference Result 359 states and 412 transitions. [2023-04-02 01:03:04,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-04-02 01:03:04,411 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 54 states have (on average 1.6481481481481481) internal successors, (89), 48 states have internal predecessors, (89), 25 states have call successors, (35), 16 states have call predecessors, (35), 21 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) Word has length 86 [2023-04-02 01:03:04,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:03:04,412 INFO L225 Difference]: With dead ends: 359 [2023-04-02 01:03:04,412 INFO L226 Difference]: Without dead ends: 230 [2023-04-02 01:03:04,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3580 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1334, Invalid=14146, Unknown=20, NotChecked=0, Total=15500 [2023-04-02 01:03:04,416 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1082 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 7535 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 7914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 7535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 01:03:04,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 29 Invalid, 7914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 7535 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 01:03:04,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-04-02 01:03:04,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 184. [2023-04-02 01:03:04,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 117 states have (on average 1.1623931623931625) internal successors, (136), 122 states have internal predecessors, (136), 33 states have call successors, (33), 28 states have call predecessors, (33), 31 states have return successors, (42), 33 states have call predecessors, (42), 30 states have call successors, (42) [2023-04-02 01:03:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 211 transitions. [2023-04-02 01:03:04,440 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 211 transitions. Word has length 86 [2023-04-02 01:03:04,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:03:04,440 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 211 transitions. [2023-04-02 01:03:04,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 54 states have (on average 1.6481481481481481) internal successors, (89), 48 states have internal predecessors, (89), 25 states have call successors, (35), 16 states have call predecessors, (35), 21 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) [2023-04-02 01:03:04,440 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 211 transitions. [2023-04-02 01:03:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 01:03:04,441 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:03:04,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:03:04,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 01:03:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:03:04,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:03:04,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:03:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1327866416, now seen corresponding path program 1 times [2023-04-02 01:03:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:03:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902912868] [2023-04-02 01:03:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:03:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:03:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:03:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:06,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:03:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:03:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:03:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:07,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:07,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:08,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:03:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:08,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:08,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-02 01:03:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-02 01:03:08,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:03:08,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902912868] [2023-04-02 01:03:08,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902912868] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:03:08,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106420160] [2023-04-02 01:03:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:03:08,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:03:08,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:03:08,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:03:08,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 01:03:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:09,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 227 conjunts are in the unsatisfiable core [2023-04-02 01:03:09,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:03:09,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2023-04-02 01:03:09,439 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 01:03:09,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-04-02 01:03:09,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2023-04-02 01:03:09,662 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 01:03:09,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-04-02 01:03:11,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:11,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:11,916 INFO L321 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2023-04-02 01:03:11,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 259 treesize of output 193 [2023-04-02 01:03:11,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:11,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:11,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 44 [2023-04-02 01:03:11,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:11,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:11,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 43 [2023-04-02 01:03:11,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-04-02 01:03:11,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 39 [2023-04-02 01:03:11,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2023-04-02 01:03:11,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:11,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-04-02 01:03:11,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2023-04-02 01:03:11,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 18 [2023-04-02 01:03:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 01:03:12,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:03:14,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106420160] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:03:14,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:03:14,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31] total 62 [2023-04-02 01:03:14,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761774540] [2023-04-02 01:03:14,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:03:14,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-04-02 01:03:14,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:03:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-04-02 01:03:14,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=4386, Unknown=10, NotChecked=0, Total=4692 [2023-04-02 01:03:14,787 INFO L87 Difference]: Start difference. First operand 184 states and 211 transitions. Second operand has 62 states, 55 states have (on average 1.7272727272727273) internal successors, (95), 50 states have internal predecessors, (95), 23 states have call successors, (35), 15 states have call predecessors, (35), 22 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) [2023-04-02 01:03:33,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:03:33,923 INFO L93 Difference]: Finished difference Result 530 states and 623 transitions. [2023-04-02 01:03:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-04-02 01:03:33,923 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 55 states have (on average 1.7272727272727273) internal successors, (95), 50 states have internal predecessors, (95), 23 states have call successors, (35), 15 states have call predecessors, (35), 22 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) Word has length 89 [2023-04-02 01:03:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:03:33,925 INFO L225 Difference]: With dead ends: 530 [2023-04-02 01:03:33,925 INFO L226 Difference]: Without dead ends: 384 [2023-04-02 01:03:33,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4083 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=1857, Invalid=14891, Unknown=22, NotChecked=0, Total=16770 [2023-04-02 01:03:33,928 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1876 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 8436 mSolverCounterSat, 774 mSolverCounterUnsat, 52 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 9262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 8436 IncrementalHoareTripleChecker+Invalid, 52 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:03:33,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1876 Valid, 14 Invalid, 9262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 8436 Invalid, 52 Unknown, 0 Unchecked, 12.1s Time] [2023-04-02 01:03:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-04-02 01:03:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 232. [2023-04-02 01:03:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 150 states have (on average 1.1733333333333333) internal successors, (176), 156 states have internal predecessors, (176), 41 states have call successors, (41), 34 states have call predecessors, (41), 39 states have return successors, (57), 41 states have call predecessors, (57), 38 states have call successors, (57) [2023-04-02 01:03:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 274 transitions. [2023-04-02 01:03:33,956 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 274 transitions. Word has length 89 [2023-04-02 01:03:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:03:33,956 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 274 transitions. [2023-04-02 01:03:33,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 55 states have (on average 1.7272727272727273) internal successors, (95), 50 states have internal predecessors, (95), 23 states have call successors, (35), 15 states have call predecessors, (35), 22 states have return successors, (29), 26 states have call predecessors, (29), 23 states have call successors, (29) [2023-04-02 01:03:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 274 transitions. [2023-04-02 01:03:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-04-02 01:03:33,958 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:03:33,958 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:03:33,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 01:03:34,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:03:34,158 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:03:34,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:03:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash -60883090, now seen corresponding path program 1 times [2023-04-02 01:03:34,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:03:34,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426135187] [2023-04-02 01:03:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:03:34,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:03:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:03:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:03:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:03:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:03:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:03:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:03:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 01:03:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 01:03:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-04-02 01:03:34,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:03:34,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426135187] [2023-04-02 01:03:34,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426135187] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:03:34,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:03:34,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 01:03:34,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568701843] [2023-04-02 01:03:34,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:03:34,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 01:03:34,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:03:34,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 01:03:34,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-04-02 01:03:34,321 INFO L87 Difference]: Start difference. First operand 232 states and 274 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-04-02 01:03:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:03:34,691 INFO L93 Difference]: Finished difference Result 248 states and 293 transitions. [2023-04-02 01:03:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 01:03:34,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2023-04-02 01:03:34,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:03:34,693 INFO L225 Difference]: With dead ends: 248 [2023-04-02 01:03:34,693 INFO L226 Difference]: Without dead ends: 246 [2023-04-02 01:03:34,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-04-02 01:03:34,694 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 132 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:03:34,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 7 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:03:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-04-02 01:03:34,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 242. [2023-04-02 01:03:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 158 states have (on average 1.1645569620253164) internal successors, (184), 163 states have internal predecessors, (184), 41 states have call successors, (41), 34 states have call predecessors, (41), 41 states have return successors, (59), 44 states have call predecessors, (59), 38 states have call successors, (59) [2023-04-02 01:03:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 284 transitions. [2023-04-02 01:03:34,722 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 284 transitions. Word has length 113 [2023-04-02 01:03:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:03:34,723 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 284 transitions. [2023-04-02 01:03:34,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 1 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-04-02 01:03:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 284 transitions. [2023-04-02 01:03:34,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-04-02 01:03:34,725 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:03:34,725 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:03:34,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 01:03:34,725 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:03:34,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:03:34,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1009414936, now seen corresponding path program 2 times [2023-04-02 01:03:34,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:03:34,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147655933] [2023-04-02 01:03:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:03:34,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:03:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:03:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:36,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:03:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:36,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:36,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:03:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:36,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:03:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:36,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:36,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:37,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:03:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:38,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:03:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:38,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 01:03:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:38,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:38,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-04-02 01:03:38,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 50 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-04-02 01:03:38,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:03:38,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147655933] [2023-04-02 01:03:38,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147655933] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:03:38,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709396532] [2023-04-02 01:03:38,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:03:38,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:03:38,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:03:38,725 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:03:38,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 01:03:38,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:03:38,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:03:38,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 191 conjunts are in the unsatisfiable core [2023-04-02 01:03:38,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:03:39,547 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-04-02 01:03:39,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-04-02 01:03:39,667 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-04-02 01:03:39,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2023-04-02 01:03:39,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:03:39,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-04-02 01:03:39,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-04-02 01:03:39,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:03:39,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:03:39,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:03:40,241 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:03:40,241 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:03:40,246 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:03:40,246 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:03:40,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 34 [2023-04-02 01:03:40,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:03:40,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:03:40,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:40,345 INFO L321 Elim1Store]: treesize reduction 55, result has 12.7 percent of original size [2023-04-02 01:03:40,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 226 treesize of output 167 [2023-04-02 01:03:40,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 118 [2023-04-02 01:03:40,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:03:40,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:03:40,526 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:03:40,529 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:03:40,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 90 [2023-04-02 01:03:40,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-04-02 01:03:40,557 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:03:40,562 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:03:40,572 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2023-04-02 01:03:40,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 97 treesize of output 96 [2023-04-02 01:03:40,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-04-02 01:03:40,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 15 [2023-04-02 01:03:40,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-04-02 01:03:40,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-04-02 01:03:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 47 proven. 25 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-04-02 01:03:42,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:03:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 39 proven. 20 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-04-02 01:03:44,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709396532] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:03:44,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:03:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 35, 20] total 92 [2023-04-02 01:03:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663179276] [2023-04-02 01:03:44,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:03:44,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-04-02 01:03:44,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:03:44,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-04-02 01:03:44,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=7991, Unknown=0, NotChecked=0, Total=8372 [2023-04-02 01:03:44,970 INFO L87 Difference]: Start difference. First operand 242 states and 284 transitions. Second operand has 92 states, 73 states have (on average 2.3424657534246576) internal successors, (171), 74 states have internal predecessors, (171), 32 states have call successors, (60), 13 states have call predecessors, (60), 29 states have return successors, (53), 34 states have call predecessors, (53), 30 states have call successors, (53) [2023-04-02 01:03:55,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:03:55,398 INFO L93 Difference]: Finished difference Result 483 states and 582 transitions. [2023-04-02 01:03:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-04-02 01:03:55,399 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 73 states have (on average 2.3424657534246576) internal successors, (171), 74 states have internal predecessors, (171), 32 states have call successors, (60), 13 states have call predecessors, (60), 29 states have return successors, (53), 34 states have call predecessors, (53), 30 states have call successors, (53) Word has length 116 [2023-04-02 01:03:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:03:55,400 INFO L225 Difference]: With dead ends: 483 [2023-04-02 01:03:55,400 INFO L226 Difference]: Without dead ends: 334 [2023-04-02 01:03:55,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6146 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1959, Invalid=25101, Unknown=0, NotChecked=0, Total=27060 [2023-04-02 01:03:55,407 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 903 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 10714 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 11284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 10714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 01:03:55,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 49 Invalid, 11284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 10714 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 01:03:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-04-02 01:03:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 222. [2023-04-02 01:03:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 145 states have (on average 1.1586206896551725) internal successors, (168), 149 states have internal predecessors, (168), 38 states have call successors, (38), 31 states have call predecessors, (38), 37 states have return successors, (51), 41 states have call predecessors, (51), 35 states have call successors, (51) [2023-04-02 01:03:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 257 transitions. [2023-04-02 01:03:55,443 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 257 transitions. Word has length 116 [2023-04-02 01:03:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:03:55,444 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 257 transitions. [2023-04-02 01:03:55,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 73 states have (on average 2.3424657534246576) internal successors, (171), 74 states have internal predecessors, (171), 32 states have call successors, (60), 13 states have call predecessors, (60), 29 states have return successors, (53), 34 states have call predecessors, (53), 30 states have call successors, (53) [2023-04-02 01:03:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 257 transitions. [2023-04-02 01:03:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-04-02 01:03:55,445 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:03:55,445 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:03:55,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 01:03:55,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:03:55,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:03:55,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:03:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash 604580991, now seen corresponding path program 3 times [2023-04-02 01:03:55,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:03:55,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850559789] [2023-04-02 01:03:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:03:55,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:03:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:55,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:03:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:55,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:03:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:55,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:55,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:03:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:03:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:03:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:03:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 01:03:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 01:03:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-04-02 01:03:56,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:03:56,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850559789] [2023-04-02 01:03:56,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850559789] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:03:56,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446677788] [2023-04-02 01:03:56,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:03:56,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:03:56,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:03:56,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:03:56,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 01:03:56,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 01:03:56,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:03:56,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 690 conjuncts, 127 conjunts are in the unsatisfiable core [2023-04-02 01:03:56,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:03:56,908 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-04-02 01:03:56,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 281 [2023-04-02 01:03:56,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:03:56,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:03:56,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:03:57,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:03:57,274 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:03:57,282 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2023-04-02 01:03:57,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 67 [2023-04-02 01:03:57,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:03:57,396 INFO L321 Elim1Store]: treesize reduction 201, result has 26.6 percent of original size [2023-04-02 01:03:57,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 232 treesize of output 311 [2023-04-02 01:03:57,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:03:58,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:03:58,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:03:58,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:03:58,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:04:02,061 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:02,062 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:02,066 INFO L321 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-04-02 01:04:02,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 82 treesize of output 21 [2023-04-02 01:04:02,088 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-04-02 01:04:02,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 28 [2023-04-02 01:04:02,171 INFO L321 Elim1Store]: treesize reduction 86, result has 1.1 percent of original size [2023-04-02 01:04:02,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 94 treesize of output 33 [2023-04-02 01:04:02,188 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:02,195 INFO L321 Elim1Store]: treesize reduction 71, result has 1.4 percent of original size [2023-04-02 01:04:02,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 82 treesize of output 21 [2023-04-02 01:04:02,223 INFO L321 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-04-02 01:04:02,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 101 treesize of output 38 [2023-04-02 01:04:02,243 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-04-02 01:04:02,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 28 [2023-04-02 01:04:02,305 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-04-02 01:04:02,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 82 treesize of output 28 [2023-04-02 01:04:02,325 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-04-02 01:04:02,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 33 [2023-04-02 01:04:02,380 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:02,388 INFO L321 Elim1Store]: treesize reduction 74, result has 1.3 percent of original size [2023-04-02 01:04:02,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 82 treesize of output 21 [2023-04-02 01:04:02,404 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:02,408 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-04-02 01:04:02,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 65 treesize of output 16 [2023-04-02 01:04:02,424 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:02,428 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-04-02 01:04:02,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 16 [2023-04-02 01:04:02,496 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-04-02 01:04:02,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 28 [2023-04-02 01:04:02,542 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:02,551 INFO L321 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-04-02 01:04:02,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 94 treesize of output 33 [2023-04-02 01:04:02,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 28 [2023-04-02 01:04:02,589 INFO L321 Elim1Store]: treesize reduction 63, result has 1.6 percent of original size [2023-04-02 01:04:02,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 94 treesize of output 33 [2023-04-02 01:04:02,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 23 [2023-04-02 01:04:02,697 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-04-02 01:04:02,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 33 [2023-04-02 01:04:02,721 INFO L321 Elim1Store]: treesize reduction 89, result has 1.1 percent of original size [2023-04-02 01:04:02,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 94 treesize of output 33 [2023-04-02 01:04:02,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:04:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 59 proven. 14 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-04-02 01:04:03,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:04:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 44 proven. 11 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-04-02 01:04:04,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446677788] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:04:04,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:04:04,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 25, 11] total 46 [2023-04-02 01:04:04,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424353662] [2023-04-02 01:04:04,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:04:04,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-04-02 01:04:04,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:04:04,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-04-02 01:04:04,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1833, Unknown=0, NotChecked=0, Total=2070 [2023-04-02 01:04:04,785 INFO L87 Difference]: Start difference. First operand 222 states and 257 transitions. Second operand has 46 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 40 states have internal predecessors, (140), 16 states have call successors, (54), 12 states have call predecessors, (54), 20 states have return successors, (44), 18 states have call predecessors, (44), 16 states have call successors, (44) [2023-04-02 01:04:10,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:04:10,558 INFO L93 Difference]: Finished difference Result 607 states and 713 transitions. [2023-04-02 01:04:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-04-02 01:04:10,559 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 40 states have internal predecessors, (140), 16 states have call successors, (54), 12 states have call predecessors, (54), 20 states have return successors, (44), 18 states have call predecessors, (44), 16 states have call successors, (44) Word has length 119 [2023-04-02 01:04:10,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:04:10,561 INFO L225 Difference]: With dead ends: 607 [2023-04-02 01:04:10,561 INFO L226 Difference]: Without dead ends: 403 [2023-04-02 01:04:10,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3386 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1876, Invalid=11234, Unknown=0, NotChecked=0, Total=13110 [2023-04-02 01:04:10,562 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1090 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 6456 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 6456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:04:10,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 18 Invalid, 6944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 6456 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-04-02 01:04:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-04-02 01:04:10,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 254. [2023-04-02 01:04:10,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 171 states have (on average 1.1461988304093567) internal successors, (196), 177 states have internal predecessors, (196), 40 states have call successors, (40), 35 states have call predecessors, (40), 41 states have return successors, (58), 41 states have call predecessors, (58), 37 states have call successors, (58) [2023-04-02 01:04:10,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 294 transitions. [2023-04-02 01:04:10,597 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 294 transitions. Word has length 119 [2023-04-02 01:04:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:04:10,597 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 294 transitions. [2023-04-02 01:04:10,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 3.4146341463414633) internal successors, (140), 40 states have internal predecessors, (140), 16 states have call successors, (54), 12 states have call predecessors, (54), 20 states have return successors, (44), 18 states have call predecessors, (44), 16 states have call successors, (44) [2023-04-02 01:04:10,597 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 294 transitions. [2023-04-02 01:04:10,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-04-02 01:04:10,598 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:04:10,598 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:04:10,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 01:04:10,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:04:10,805 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:04:10,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:04:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1877849485, now seen corresponding path program 1 times [2023-04-02 01:04:10,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:04:10,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323158248] [2023-04-02 01:04:10,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:04:10,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:04:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:04:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:04:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:04:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:04:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:04:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:04:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-04-02 01:04:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:04:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:04:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:04:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:04:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:04:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:04:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:04:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:12,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 01:04:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:04:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:13,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 01:04:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:13,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:04:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:13,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-04-02 01:04:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:13,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:04:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:13,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-04-02 01:04:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:04:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 01:04:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 36 proven. 37 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-04-02 01:04:14,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:04:14,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323158248] [2023-04-02 01:04:14,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323158248] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:04:14,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268732612] [2023-04-02 01:04:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:04:14,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:04:14,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:04:14,510 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:04:14,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 01:04:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:04:14,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 256 conjunts are in the unsatisfiable core [2023-04-02 01:04:14,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:04:14,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-02 01:04:15,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2023-04-02 01:04:15,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2023-04-02 01:04:15,748 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-04-02 01:04:15,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 281 [2023-04-02 01:04:15,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:04:15,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:04:15,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-04-02 01:04:15,807 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:15,810 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:15,818 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2023-04-02 01:04:15,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 96 treesize of output 95 [2023-04-02 01:04:15,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:04:15,872 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:15,876 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:15,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 79 [2023-04-02 01:04:15,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:04:16,025 INFO L321 Elim1Store]: treesize reduction 65, result has 46.3 percent of original size [2023-04-02 01:04:16,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 546 treesize of output 491 [2023-04-02 01:04:16,132 INFO L321 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2023-04-02 01:04:16,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 1 [2023-04-02 01:04:16,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:04:16,387 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 01:04:16,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-04-02 01:04:17,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-02 01:04:17,699 INFO L321 Elim1Store]: treesize reduction 282, result has 39.4 percent of original size [2023-04-02 01:04:17,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 19 case distinctions, treesize of input 542 treesize of output 924 [2023-04-02 01:04:17,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-04-02 01:04:17,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-04-02 01:04:17,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:04:17,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 40 [2023-04-02 01:04:17,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2023-04-02 01:04:18,003 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,008 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,009 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,025 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,028 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,029 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,042 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,069 INFO L321 Elim1Store]: treesize reduction 61, result has 11.6 percent of original size [2023-04-02 01:04:18,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 11 case distinctions, treesize of input 223 treesize of output 690 [2023-04-02 01:04:18,324 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,328 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,337 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,360 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,370 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,383 INFO L217 Elim1Store]: Index analysis took 103 ms [2023-04-02 01:04:18,414 INFO L321 Elim1Store]: treesize reduction 61, result has 11.6 percent of original size [2023-04-02 01:04:18,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 11 case distinctions, treesize of input 225 treesize of output 690 [2023-04-02 01:04:18,570 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,574 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,576 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,589 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,592 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,595 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,597 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,600 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,603 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 644 [2023-04-02 01:04:18,961 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,963 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,963 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,970 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:18,986 INFO L321 Elim1Store]: treesize reduction 37, result has 17.8 percent of original size [2023-04-02 01:04:18,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 140 treesize of output 234 [2023-04-02 01:04:19,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:04:19,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:04:19,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:04:19,142 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:19,145 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:19,172 INFO L321 Elim1Store]: treesize reduction 37, result has 17.8 percent of original size [2023-04-02 01:04:19,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 263 treesize of output 353 [2023-04-02 01:04:19,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:04:19,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 01:04:19,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 637 treesize of output 606 [2023-04-02 01:04:19,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:04:19,988 INFO L321 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2023-04-02 01:04:19,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 3 [2023-04-02 01:04:20,137 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:20,145 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-04-02 01:04:20,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 229 treesize of output 196 [2023-04-02 01:04:20,149 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:20,152 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:20,161 INFO L321 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2023-04-02 01:04:20,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 293 treesize of output 248 [2023-04-02 01:04:20,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:04:20,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 60 [2023-04-02 01:04:20,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 397 treesize of output 271 [2023-04-02 01:04:20,404 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:04:20,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 141 [2023-04-02 01:04:21,916 INFO L321 Elim1Store]: treesize reduction 121, result has 31.6 percent of original size [2023-04-02 01:04:21,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 1040 treesize of output 961 [2023-04-02 01:04:22,236 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-04-02 01:04:22,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 01:04:22,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:04:22,444 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:352) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:296) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:296) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:282) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-04-02 01:04:22,447 INFO L158 Benchmark]: Toolchain (without parser) took 102867.04ms. Allocated memory was 194.0MB in the beginning and 683.7MB in the end (delta: 489.7MB). Free memory was 135.5MB in the beginning and 274.9MB in the end (delta: -139.5MB). Peak memory consumption was 351.3MB. Max. memory is 8.0GB. [2023-04-02 01:04:22,447 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-02 01:04:22,448 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.28ms. Allocated memory is still 194.0MB. Free memory was 135.5MB in the beginning and 116.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-04-02 01:04:22,448 INFO L158 Benchmark]: Boogie Preprocessor took 60.33ms. Allocated memory is still 194.0MB. Free memory was 116.2MB in the beginning and 112.8MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-04-02 01:04:22,451 INFO L158 Benchmark]: RCFGBuilder took 602.95ms. Allocated memory was 194.0MB in the beginning and 328.2MB in the end (delta: 134.2MB). Free memory was 112.5MB in the beginning and 269.4MB in the end (delta: -156.8MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2023-04-02 01:04:22,451 INFO L158 Benchmark]: TraceAbstraction took 101870.47ms. Allocated memory was 328.2MB in the beginning and 683.7MB in the end (delta: 355.5MB). Free memory was 268.3MB in the beginning and 274.9MB in the end (delta: -6.6MB). Peak memory consumption was 349.6MB. Max. memory is 8.0GB. [2023-04-02 01:04:22,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 142.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 321.28ms. Allocated memory is still 194.0MB. Free memory was 135.5MB in the beginning and 116.2MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.33ms. Allocated memory is still 194.0MB. Free memory was 116.2MB in the beginning and 112.8MB in the end (delta: 3.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 602.95ms. Allocated memory was 194.0MB in the beginning and 328.2MB in the end (delta: 134.2MB). Free memory was 112.5MB in the beginning and 269.4MB in the end (delta: -156.8MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * TraceAbstraction took 101870.47ms. Allocated memory was 328.2MB in the beginning and 683.7MB in the end (delta: 355.5MB). Free memory was 268.3MB in the beginning and 274.9MB in the end (delta: -6.6MB). Peak memory consumption was 349.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-04-02 01:04:22,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...