/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/weaver/spaghetti.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 20:11:19,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 20:11:19,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 20:11:19,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 20:11:19,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 20:11:19,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 20:11:19,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 20:11:19,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 20:11:19,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 20:11:19,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 20:11:19,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 20:11:19,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 20:11:19,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 20:11:19,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 20:11:19,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 20:11:19,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 20:11:19,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 20:11:19,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 20:11:19,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 20:11:19,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 20:11:19,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 20:11:19,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 20:11:19,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 20:11:19,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 20:11:19,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 20:11:19,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 20:11:19,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 20:11:19,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 20:11:19,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 20:11:19,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 20:11:19,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 20:11:19,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 20:11:19,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 20:11:19,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 20:11:19,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 20:11:19,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 20:11:19,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 20:11:19,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 20:11:19,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 20:11:19,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 20:11:19,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 20:11:19,708 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 [2022-12-11 20:11:19,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 20:11:19,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 20:11:19,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 20:11:19,733 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 20:11:19,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 20:11:19,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 20:11:19,734 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 20:11:19,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 20:11:19,734 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 20:11:19,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 20:11:19,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 20:11:19,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 20:11:19,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 20:11:19,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 20:11:19,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 20:11:19,735 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 20:11:19,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 20:11:19,736 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 20:11:19,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 20:11:19,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 20:11:19,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 20:11:19,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 20:11:19,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 20:11:19,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:11:19,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 20:11:19,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 20:11:19,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 20:11:19,736 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 20:11:19,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 20:11:19,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 20:11:19,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 20:11:19,737 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 20:11:19,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 20:11:19,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 20:11:19,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 20:11:19,989 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 20:11:19,989 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 20:11:19,990 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c [2022-12-11 20:11:21,072 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 20:11:21,241 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 20:11:21,241 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c [2022-12-11 20:11:21,246 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae01f7e8/72963d018ac2413ba4a23e62dc640d36/FLAGdd886a8b2 [2022-12-11 20:11:21,256 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae01f7e8/72963d018ac2413ba4a23e62dc640d36 [2022-12-11 20:11:21,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 20:11:21,259 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 20:11:21,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 20:11:21,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 20:11:21,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 20:11:21,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6594253a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21, skipping insertion in model container [2022-12-11 20:11:21,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 20:11:21,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 20:11:21,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,366 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,374 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,379 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c[3221,3234] [2022-12-11 20:11:21,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:11:21,387 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 20:11:21,395 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,400 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:11:21,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:11:21,404 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c[3221,3234] [2022-12-11 20:11:21,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:11:21,414 INFO L208 MainTranslator]: Completed translation [2022-12-11 20:11:21,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21 WrapperNode [2022-12-11 20:11:21,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 20:11:21,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 20:11:21,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 20:11:21,415 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 20:11:21,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,440 INFO L138 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2022-12-11 20:11:21,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 20:11:21,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 20:11:21,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 20:11:21,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 20:11:21,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,469 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 20:11:21,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 20:11:21,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 20:11:21,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 20:11:21,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (1/1) ... [2022-12-11 20:11:21,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:11:21,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:11:21,516 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) [2022-12-11 20:11:21,571 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 [2022-12-11 20:11:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 20:11:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 20:11:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 20:11:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 20:11:21,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 20:11:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-11 20:11:21,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-11 20:11:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-11 20:11:21,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-11 20:11:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 20:11:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 20:11:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 20:11:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 20:11:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 20:11:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 20:11:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 20:11:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 20:11:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 20:11:21,595 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 20:11:21,674 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 20:11:21,676 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 20:11:21,809 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 20:11:21,819 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 20:11:21,819 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-11 20:11:21,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:11:21 BoogieIcfgContainer [2022-12-11 20:11:21,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 20:11:21,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 20:11:21,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 20:11:21,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 20:11:21,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 08:11:21" (1/3) ... [2022-12-11 20:11:21,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c2462b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:11:21, skipping insertion in model container [2022-12-11 20:11:21,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:11:21" (2/3) ... [2022-12-11 20:11:21,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c2462b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:11:21, skipping insertion in model container [2022-12-11 20:11:21,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:11:21" (3/3) ... [2022-12-11 20:11:21,834 INFO L112 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2022-12-11 20:11:21,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 20:11:21,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 20:11:21,846 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 20:11:21,932 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-11 20:11:21,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 121 transitions, 274 flow [2022-12-11 20:11:22,011 INFO L130 PetriNetUnfolder]: 9/117 cut-off events. [2022-12-11 20:11:22,011 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-11 20:11:22,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 117 events. 9/117 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2022-12-11 20:11:22,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 121 transitions, 274 flow [2022-12-11 20:11:22,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 105 transitions, 234 flow [2022-12-11 20:11:22,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 20:11:22,042 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;@7d34bd88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 20:11:22,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-11 20:11:22,074 INFO L130 PetriNetUnfolder]: 9/104 cut-off events. [2022-12-11 20:11:22,074 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-11 20:11:22,074 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:22,075 INFO L214 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] [2022-12-11 20:11:22,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 20:11:22,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1392267176, now seen corresponding path program 1 times [2022-12-11 20:11:22,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:22,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121152567] [2022-12-11 20:11:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:22,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:22,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:22,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121152567] [2022-12-11 20:11:22,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121152567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:22,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:22,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-11 20:11:22,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649873054] [2022-12-11 20:11:22,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:22,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-11 20:11:22,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:22,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-11 20:11:22,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-11 20:11:22,296 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 121 [2022-12-11 20:11:22,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 105 transitions, 234 flow. Second operand has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2022-12-11 20:11:22,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:22,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 121 [2022-12-11 20:11:22,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:22,369 INFO L130 PetriNetUnfolder]: 21/133 cut-off events. [2022-12-11 20:11:22,370 INFO L131 PetriNetUnfolder]: For 27/28 co-relation queries the response was YES. [2022-12-11 20:11:22,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 133 events. 21/133 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 230 event pairs, 9 based on Foata normal form. 34/157 useless extension candidates. Maximal degree in co-relation 118. Up to 28 conditions per place. [2022-12-11 20:11:22,372 INFO L137 encePairwiseOnDemand]: 116/121 looper letters, 10 selfloop transitions, 0 changer transitions 1/100 dead transitions. [2022-12-11 20:11:22,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 100 transitions, 244 flow [2022-12-11 20:11:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-11 20:11:22,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-11 20:11:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 225 transitions. [2022-12-11 20:11:22,384 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9297520661157025 [2022-12-11 20:11:22,385 INFO L175 Difference]: Start difference. First operand has 109 places, 105 transitions, 234 flow. Second operand 2 states and 225 transitions. [2022-12-11 20:11:22,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 100 transitions, 244 flow [2022-12-11 20:11:22,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 100 transitions, 228 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-11 20:11:22,394 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 206 flow [2022-12-11 20:11:22,395 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2022-12-11 20:11:22,400 INFO L295 CegarLoopForPetriNet]: 109 programPoint places, -7 predicate places. [2022-12-11 20:11:22,400 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 206 flow [2022-12-11 20:11:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.0) internal successors, (222), 2 states have internal predecessors, (222), 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) [2022-12-11 20:11:22,401 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:22,401 INFO L214 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] [2022-12-11 20:11:22,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 20:11:22,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 20:11:22,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:22,403 INFO L85 PathProgramCache]: Analyzing trace with hash 851614434, now seen corresponding path program 1 times [2022-12-11 20:11:22,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:22,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681811642] [2022-12-11 20:11:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:22,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:22,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681811642] [2022-12-11 20:11:22,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681811642] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:22,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:22,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 20:11:22,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898469702] [2022-12-11 20:11:22,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:22,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 20:11:22,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:22,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 20:11:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:11:22,880 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 121 [2022-12-11 20:11:22,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 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) [2022-12-11 20:11:22,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:22,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 121 [2022-12-11 20:11:22,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:23,216 INFO L130 PetriNetUnfolder]: 960/1940 cut-off events. [2022-12-11 20:11:23,217 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2022-12-11 20:11:23,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 1940 events. 960/1940 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12201 event pairs, 257 based on Foata normal form. 1/1915 useless extension candidates. Maximal degree in co-relation 3378. Up to 610 conditions per place. [2022-12-11 20:11:23,231 INFO L137 encePairwiseOnDemand]: 107/121 looper letters, 44 selfloop transitions, 13 changer transitions 12/138 dead transitions. [2022-12-11 20:11:23,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 138 transitions, 430 flow [2022-12-11 20:11:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 20:11:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 20:11:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 574 transitions. [2022-12-11 20:11:23,238 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.790633608815427 [2022-12-11 20:11:23,238 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 206 flow. Second operand 6 states and 574 transitions. [2022-12-11 20:11:23,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 138 transitions, 430 flow [2022-12-11 20:11:23,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 138 transitions, 430 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 20:11:23,244 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 300 flow [2022-12-11 20:11:23,245 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2022-12-11 20:11:23,245 INFO L295 CegarLoopForPetriNet]: 109 programPoint places, 2 predicate places. [2022-12-11 20:11:23,245 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 300 flow [2022-12-11 20:11:23,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 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) [2022-12-11 20:11:23,246 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:11:23,246 INFO L214 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] [2022-12-11 20:11:23,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 20:11:23,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-11 20:11:23,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:11:23,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1303664308, now seen corresponding path program 2 times [2022-12-11 20:11:23,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:11:23,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126471355] [2022-12-11 20:11:23,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:11:23,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:11:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:11:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:11:23,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:11:23,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126471355] [2022-12-11 20:11:23,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126471355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:11:23,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:11:23,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 20:11:23,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350426876] [2022-12-11 20:11:23,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:11:23,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 20:11:23,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:11:23,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 20:11:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:11:23,481 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 121 [2022-12-11 20:11:23,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 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) [2022-12-11 20:11:23,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:11:23,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 121 [2022-12-11 20:11:23,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:11:23,739 INFO L130 PetriNetUnfolder]: 1107/2334 cut-off events. [2022-12-11 20:11:23,739 INFO L131 PetriNetUnfolder]: For 1029/1029 co-relation queries the response was YES. [2022-12-11 20:11:23,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5090 conditions, 2334 events. 1107/2334 cut-off events. For 1029/1029 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16188 event pairs, 320 based on Foata normal form. 1/2271 useless extension candidates. Maximal degree in co-relation 5082. Up to 893 conditions per place. [2022-12-11 20:11:23,746 INFO L137 encePairwiseOnDemand]: 108/121 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2022-12-11 20:11:23,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 150 transitions, 622 flow [2022-12-11 20:11:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 20:11:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 20:11:23,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 570 transitions. [2022-12-11 20:11:23,748 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7851239669421488 [2022-12-11 20:11:23,748 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 300 flow. Second operand 6 states and 570 transitions. [2022-12-11 20:11:23,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 150 transitions, 622 flow [2022-12-11 20:11:23,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 150 transitions, 620 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-11 20:11:23,752 INFO L231 Difference]: Finished difference. Result has 110 places, 0 transitions, 0 flow [2022-12-11 20:11:23,752 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=110, PETRI_TRANSITIONS=0} [2022-12-11 20:11:23,753 INFO L295 CegarLoopForPetriNet]: 109 programPoint places, 1 predicate places. [2022-12-11 20:11:23,753 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 0 transitions, 0 flow [2022-12-11 20:11:23,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.33333333333333) internal successors, (524), 6 states have internal predecessors, (524), 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) [2022-12-11 20:11:23,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-12-11 20:11:23,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-12-11 20:11:23,756 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-12-11 20:11:23,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-12-11 20:11:23,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-12-11 20:11:23,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-11 20:11:23,757 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2022-12-11 20:11:23,760 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 20:11:23,760 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 20:11:23,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 08:11:23 BasicIcfg [2022-12-11 20:11:23,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 20:11:23,768 INFO L158 Benchmark]: Toolchain (without parser) took 2508.71ms. Allocated memory was 169.9MB in the beginning and 221.2MB in the end (delta: 51.4MB). Free memory was 145.9MB in the beginning and 112.4MB in the end (delta: 33.5MB). Peak memory consumption was 84.7MB. Max. memory is 8.0GB. [2022-12-11 20:11:23,769 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 169.9MB. Free memory was 147.2MB in the beginning and 147.1MB in the end (delta: 91.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 20:11:23,772 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.93ms. Allocated memory is still 169.9MB. Free memory was 145.7MB in the beginning and 131.6MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-11 20:11:23,773 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.75ms. Allocated memory is still 169.9MB. Free memory was 131.0MB in the beginning and 129.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:11:23,778 INFO L158 Benchmark]: Boogie Preprocessor took 29.39ms. Allocated memory is still 169.9MB. Free memory was 129.5MB in the beginning and 128.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-11 20:11:23,778 INFO L158 Benchmark]: RCFGBuilder took 349.75ms. Allocated memory is still 169.9MB. Free memory was 127.9MB in the beginning and 113.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-11 20:11:23,778 INFO L158 Benchmark]: TraceAbstraction took 1944.92ms. Allocated memory was 169.9MB in the beginning and 221.2MB in the end (delta: 51.4MB). Free memory was 111.6MB in the beginning and 112.4MB in the end (delta: -732.5kB). Peak memory consumption was 50.1MB. Max. memory is 8.0GB. [2022-12-11 20:11:23,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 169.9MB. Free memory was 147.2MB in the beginning and 147.1MB in the end (delta: 91.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 152.93ms. Allocated memory is still 169.9MB. Free memory was 145.7MB in the beginning and 131.6MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.75ms. Allocated memory is still 169.9MB. Free memory was 131.0MB in the beginning and 129.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.39ms. Allocated memory is still 169.9MB. Free memory was 129.5MB in the beginning and 128.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 349.75ms. Allocated memory is still 169.9MB. Free memory was 127.9MB in the beginning and 113.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1944.92ms. Allocated memory was 169.9MB in the beginning and 221.2MB in the end (delta: 51.4MB). Free memory was 111.6MB in the beginning and 112.4MB in the end (delta: -732.5kB). Peak memory consumption was 50.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 127]: 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 9 procedures, 155 locations, 5 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: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 192 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 131 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 302 IncrementalHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 61 mSDtfsCounter, 302 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=300occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 432 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! [2022-12-11 20:11:23,807 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...