/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:23:24,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:23:24,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:23:24,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:23:24,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:23:24,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:23:24,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:23:24,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:23:24,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:23:24,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:23:24,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:23:24,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:23:24,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:23:24,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:23:24,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:23:24,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:23:24,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:23:24,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:23:24,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:23:24,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:23:24,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:23:24,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:23:24,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:23:24,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:23:24,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-05 18:23:24,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 18:23:24,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 18:23:24,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 18:23:24,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 18:23:24,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 18:23:24,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 18:23:24,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 18:23:24,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 18:23:24,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:23:24,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:23:24,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:23:24,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 18:23:24,164 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:23:24,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:23:24,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:23:24,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:23:24,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:23:24,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:23:24,167 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:23:24,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:23:24,167 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:23:24,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:23:24,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:23:24,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:23:24,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:23:24,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:23:24,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:23:24,168 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:23:24,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:23:24,169 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:23:24,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:23:24,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:23:24,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:23:24,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:23:24,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:23:24,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:23:24,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:23:24,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:23:24,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:23:24,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:23:24,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:23:24,170 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:23:24,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:23:24,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:23:24,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:23:24,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:23:24,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:23:24,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:23:24,441 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:23:24,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i [2022-12-05 18:23:25,300 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:23:25,515 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:23:25,516 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i [2022-12-05 18:23:25,532 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3761a5769/01a9da236fc44a48b5678f7d9f22b63c/FLAGc02563312 [2022-12-05 18:23:25,542 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3761a5769/01a9da236fc44a48b5678f7d9f22b63c [2022-12-05 18:23:25,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:23:25,544 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:23:25,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:23:25,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:23:25,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:23:25,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:23:25" (1/1) ... [2022-12-05 18:23:25,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720aebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:25, skipping insertion in model container [2022-12-05 18:23:25,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:23:25" (1/1) ... [2022-12-05 18:23:25,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:23:25,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:23:25,731 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-05 18:23:25,891 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i[55568,55581] [2022-12-05 18:23:25,899 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:23:25,900 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:23:25,901 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:23:25,903 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:23:25,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:23:25,924 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:23:25,946 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-05 18:23:25,958 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i[55568,55581] [2022-12-05 18:23:25,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:23:25,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:23:25,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 18:23:25,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 18:23:25,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:23:26,030 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:23:26,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26 WrapperNode [2022-12-05 18:23:26,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:23:26,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:23:26,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:23:26,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:23:26,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,074 INFO L138 Inliner]: procedures = 325, calls = 53, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-12-05 18:23:26,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:23:26,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:23:26,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:23:26,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:23:26,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:23:26,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:23:26,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:23:26,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:23:26,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (1/1) ... [2022-12-05 18:23:26,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:23:26,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:23:26,132 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) [2022-12-05 18:23:26,144 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 [2022-12-05 18:23:26,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-12-05 18:23:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 18:23:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 18:23:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 18:23:26,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 18:23:26,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:23:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:23:26,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:23:26,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:23:26,163 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 18:23:26,319 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:23:26,320 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:23:26,468 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:23:26,473 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:23:26,473 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 18:23:26,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:23:26 BoogieIcfgContainer [2022-12-05 18:23:26,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:23:26,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:23:26,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:23:26,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:23:26,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:23:25" (1/3) ... [2022-12-05 18:23:26,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd00afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:23:26, skipping insertion in model container [2022-12-05 18:23:26,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:26" (2/3) ... [2022-12-05 18:23:26,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd00afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:23:26, skipping insertion in model container [2022-12-05 18:23:26,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:23:26" (3/3) ... [2022-12-05 18:23:26,479 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2022-12-05 18:23:26,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:23:26,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 18:23:26,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:23:26,628 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2022-12-05 18:23:26,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 195 transitions, 497 flow [2022-12-05 18:23:26,735 INFO L130 PetriNetUnfolder]: 7/132 cut-off events. [2022-12-05 18:23:26,736 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-05 18:23:26,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 132 events. 7/132 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2022-12-05 18:23:26,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 195 transitions, 497 flow [2022-12-05 18:23:26,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 121 transitions, 293 flow [2022-12-05 18:23:26,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:23:26,762 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=false, 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;@474756db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:23:26,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-05 18:23:26,796 INFO L130 PetriNetUnfolder]: 6/120 cut-off events. [2022-12-05 18:23:26,797 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-05 18:23:26,797 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:26,798 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:26,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-05 18:23:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:26,802 INFO L85 PathProgramCache]: Analyzing trace with hash -939903771, now seen corresponding path program 1 times [2022-12-05 18:23:26,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:26,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687762342] [2022-12-05 18:23:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:26,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:27,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:27,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687762342] [2022-12-05 18:23:27,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687762342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:23:27,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:23:27,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 18:23:27,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121153802] [2022-12-05 18:23:27,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:27,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 18:23:27,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 18:23:27,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 18:23:27,395 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 197 [2022-12-05 18:23:27,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 121 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:27,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:27,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 197 [2022-12-05 18:23:27,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:27,497 INFO L130 PetriNetUnfolder]: 5/124 cut-off events. [2022-12-05 18:23:27,497 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-12-05 18:23:27,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 124 events. 5/124 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 52 event pairs, 0 based on Foata normal form. 1/119 useless extension candidates. Maximal degree in co-relation 129. Up to 26 conditions per place. [2022-12-05 18:23:27,500 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 25 selfloop transitions, 0 changer transitions 4/124 dead transitions. [2022-12-05 18:23:27,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 124 transitions, 357 flow [2022-12-05 18:23:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 18:23:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 18:23:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 795 transitions. [2022-12-05 18:23:27,515 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8071065989847716 [2022-12-05 18:23:27,516 INFO L175 Difference]: Start difference. First operand has 134 places, 121 transitions, 293 flow. Second operand 5 states and 795 transitions. [2022-12-05 18:23:27,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 124 transitions, 357 flow [2022-12-05 18:23:27,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 124 transitions, 323 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-05 18:23:27,521 INFO L231 Difference]: Finished difference. Result has 129 places, 120 transitions, 263 flow [2022-12-05 18:23:27,523 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=129, PETRI_TRANSITIONS=120} [2022-12-05 18:23:27,525 INFO L294 CegarLoopForPetriNet]: 134 programPoint places, -5 predicate places. [2022-12-05 18:23:27,526 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 120 transitions, 263 flow [2022-12-05 18:23:27,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.8) internal successors, (784), 5 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:27,526 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:27,526 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:27,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:23:27,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-05 18:23:27,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:27,528 INFO L85 PathProgramCache]: Analyzing trace with hash -855854056, now seen corresponding path program 1 times [2022-12-05 18:23:27,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:27,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525805114] [2022-12-05 18:23:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:27,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:27,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:27,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525805114] [2022-12-05 18:23:27,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525805114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:23:27,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:23:27,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 18:23:27,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588356501] [2022-12-05 18:23:27,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:27,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 18:23:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:27,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 18:23:27,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 18:23:27,802 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 197 [2022-12-05 18:23:27,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 120 transitions, 263 flow. Second operand has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:27,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:27,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 197 [2022-12-05 18:23:27,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:28,091 INFO L130 PetriNetUnfolder]: 580/1366 cut-off events. [2022-12-05 18:23:28,092 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-05 18:23:28,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2335 conditions, 1366 events. 580/1366 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7098 event pairs, 123 based on Foata normal form. 1/1282 useless extension candidates. Maximal degree in co-relation 2329. Up to 520 conditions per place. [2022-12-05 18:23:28,102 INFO L137 encePairwiseOnDemand]: 187/197 looper letters, 51 selfloop transitions, 7 changer transitions 12/146 dead transitions. [2022-12-05 18:23:28,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 146 transitions, 467 flow [2022-12-05 18:23:28,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 18:23:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 18:23:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 701 transitions. [2022-12-05 18:23:28,103 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7116751269035533 [2022-12-05 18:23:28,104 INFO L175 Difference]: Start difference. First operand has 129 places, 120 transitions, 263 flow. Second operand 5 states and 701 transitions. [2022-12-05 18:23:28,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 146 transitions, 467 flow [2022-12-05 18:23:28,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 146 transitions, 461 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-05 18:23:28,111 INFO L231 Difference]: Finished difference. Result has 131 places, 126 transitions, 315 flow [2022-12-05 18:23:28,111 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=131, PETRI_TRANSITIONS=126} [2022-12-05 18:23:28,112 INFO L294 CegarLoopForPetriNet]: 134 programPoint places, -3 predicate places. [2022-12-05 18:23:28,112 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 126 transitions, 315 flow [2022-12-05 18:23:28,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:28,112 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:28,113 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:28,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:23:28,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-12-05 18:23:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:28,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2064282252, now seen corresponding path program 2 times [2022-12-05 18:23:28,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:28,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821284658] [2022-12-05 18:23:28,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:28,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:28,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:28,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821284658] [2022-12-05 18:23:28,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821284658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:23:28,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:23:28,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 18:23:28,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579757870] [2022-12-05 18:23:28,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:28,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 18:23:28,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 18:23:28,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-05 18:23:28,432 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 197 [2022-12-05 18:23:28,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 126 transitions, 315 flow. Second operand has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:28,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:28,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 197 [2022-12-05 18:23:28,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:28,699 INFO L130 PetriNetUnfolder]: 525/1363 cut-off events. [2022-12-05 18:23:28,699 INFO L131 PetriNetUnfolder]: For 633/695 co-relation queries the response was YES. [2022-12-05 18:23:28,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1363 events. 525/1363 cut-off events. For 633/695 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7571 event pairs, 192 based on Foata normal form. 11/1291 useless extension candidates. Maximal degree in co-relation 2923. Up to 655 conditions per place. [2022-12-05 18:23:28,703 INFO L137 encePairwiseOnDemand]: 186/197 looper letters, 0 selfloop transitions, 0 changer transitions 145/145 dead transitions. [2022-12-05 18:23:28,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 145 transitions, 526 flow [2022-12-05 18:23:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 18:23:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 18:23:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 922 transitions. [2022-12-05 18:23:28,705 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.668600435097897 [2022-12-05 18:23:28,705 INFO L175 Difference]: Start difference. First operand has 131 places, 126 transitions, 315 flow. Second operand 7 states and 922 transitions. [2022-12-05 18:23:28,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 145 transitions, 526 flow [2022-12-05 18:23:28,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 145 transitions, 502 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-05 18:23:28,710 INFO L231 Difference]: Finished difference. Result has 129 places, 0 transitions, 0 flow [2022-12-05 18:23:28,711 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=129, PETRI_TRANSITIONS=0} [2022-12-05 18:23:28,712 INFO L294 CegarLoopForPetriNet]: 134 programPoint places, -5 predicate places. [2022-12-05 18:23:28,712 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 0 transitions, 0 flow [2022-12-05 18:23:28,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:28,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2022-12-05 18:23:28,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2022-12-05 18:23:28,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2022-12-05 18:23:28,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2022-12-05 18:23:28,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2022-12-05 18:23:28,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 12 remaining) [2022-12-05 18:23:28,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2022-12-05 18:23:28,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-12-05 18:23:28,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2022-12-05 18:23:28,718 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2022-12-05 18:23:28,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2022-12-05 18:23:28,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-05 18:23:28,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:23:28,719 INFO L458 BasicCegarLoop]: Path program histogram: [2, 1] [2022-12-05 18:23:28,721 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 18:23:28,721 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 18:23:28,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 06:23:28 BasicIcfg [2022-12-05 18:23:28,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 18:23:28,726 INFO L158 Benchmark]: Toolchain (without parser) took 3181.86ms. Allocated memory was 195.0MB in the beginning and 256.9MB in the end (delta: 61.9MB). Free memory was 168.1MB in the beginning and 106.9MB in the end (delta: 61.1MB). Peak memory consumption was 124.4MB. Max. memory is 8.0GB. [2022-12-05 18:23:28,727 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory was 171.4MB in the beginning and 171.2MB in the end (delta: 219.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 18:23:28,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.62ms. Allocated memory is still 195.0MB. Free memory was 167.9MB in the beginning and 134.3MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-12-05 18:23:28,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.85ms. Allocated memory is still 195.0MB. Free memory was 134.3MB in the beginning and 131.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-05 18:23:28,730 INFO L158 Benchmark]: Boogie Preprocessor took 28.67ms. Allocated memory is still 195.0MB. Free memory was 131.7MB in the beginning and 130.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 18:23:28,730 INFO L158 Benchmark]: RCFGBuilder took 370.17ms. Allocated memory is still 195.0MB. Free memory was 130.1MB in the beginning and 113.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-05 18:23:28,730 INFO L158 Benchmark]: TraceAbstraction took 2249.66ms. Allocated memory was 195.0MB in the beginning and 256.9MB in the end (delta: 61.9MB). Free memory was 112.8MB in the beginning and 106.9MB in the end (delta: 5.9MB). Peak memory consumption was 68.8MB. Max. memory is 8.0GB. [2022-12-05 18:23:28,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory was 171.4MB in the beginning and 171.2MB in the end (delta: 219.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 485.62ms. Allocated memory is still 195.0MB. Free memory was 167.9MB in the beginning and 134.3MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.85ms. Allocated memory is still 195.0MB. Free memory was 134.3MB in the beginning and 131.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.67ms. Allocated memory is still 195.0MB. Free memory was 131.7MB in the beginning and 130.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 370.17ms. Allocated memory is still 195.0MB. Free memory was 130.1MB in the beginning and 113.8MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 2249.66ms. Allocated memory was 195.0MB in the beginning and 256.9MB in the end (delta: 61.9MB). Free memory was 112.8MB in the beginning and 106.9MB in the end (delta: 5.9MB). Peak memory consumption was 68.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1123]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 224 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 193 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 142 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 469 IncrementalHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 51 mSDtfsCounter, 469 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=315occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 343 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 340 ConstructedInterpolants, 0 QuantifiedInterpolants, 716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 18:23:28,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...