/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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 09:36:42,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 09:36:42,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 09:36:42,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 09:36:42,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 09:36:42,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 09:36:42,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 09:36:42,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 09:36:42,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 09:36:42,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 09:36:42,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 09:36:42,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 09:36:42,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 09:36:42,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 09:36:42,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 09:36:42,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 09:36:42,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 09:36:42,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 09:36:42,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 09:36:42,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 09:36:42,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 09:36:42,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 09:36:42,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 09:36:42,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 09:36:42,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 09:36:42,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 09:36:42,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 09:36:42,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 09:36:42,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 09:36:42,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 09:36:42,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 09:36:42,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 09:36:42,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 09:36:42,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 09:36:42,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 09:36:42,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 09:36:42,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 09:36:42,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 09:36:42,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 09:36:42,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 09:36:42,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 09:36:42,384 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-RepeatedSemanticLbeWithPredicates.epf [2022-12-13 09:36:42,412 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 09:36:42,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 09:36:42,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 09:36:42,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 09:36:42,414 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 09:36:42,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 09:36:42,415 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 09:36:42,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 09:36:42,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 09:36:42,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 09:36:42,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 09:36:42,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 09:36:42,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 09:36:42,416 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 09:36:42,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 09:36:42,416 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 09:36:42,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 09:36:42,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 09:36:42,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 09:36:42,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 09:36:42,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 09:36:42,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:36:42,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 09:36:42,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 09:36:42,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 09:36:42,418 INFO L138 SettingsManager]: * Use conditional commutativity for large block encoding in concurrent analysis=CONDITIONAL_CONJUNCTIVE [2022-12-13 09:36:42,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 09:36:42,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 09:36:42,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 09:36:42,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 09:36:42,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 09:36:42,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 09:36:42,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 09:36:42,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 09:36:42,693 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 09:36:42,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2022-12-13 09:36:43,703 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 09:36:43,994 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 09:36:43,995 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2022-12-13 09:36:44,036 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d072d2d4f/77523c6ad5d0430aa25207cb36fb11f5/FLAG11fbfd83c [2022-12-13 09:36:44,050 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d072d2d4f/77523c6ad5d0430aa25207cb36fb11f5 [2022-12-13 09:36:44,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 09:36:44,053 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 09:36:44,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 09:36:44,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 09:36:44,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 09:36:44,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a40a4ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44, skipping insertion in model container [2022-12-13 09:36:44,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 09:36:44,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 09:36:44,245 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-wmm/safe021_tso.i[945,958] [2022-12-13 09:36:44,367 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,368 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,369 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,382 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:36:44,390 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 09:36:44,404 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i[945,958] [2022-12-13 09:36:44,423 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,424 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,425 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,429 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 09:36:44,430 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 09:36:44,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 09:36:44,475 INFO L208 MainTranslator]: Completed translation [2022-12-13 09:36:44,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44 WrapperNode [2022-12-13 09:36:44,475 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 09:36:44,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 09:36:44,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 09:36:44,476 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 09:36:44,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,517 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-13 09:36:44,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 09:36:44,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 09:36:44,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 09:36:44,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 09:36:44,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,555 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 09:36:44,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 09:36:44,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 09:36:44,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 09:36:44,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (1/1) ... [2022-12-13 09:36:44,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 09:36:44,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 09:36:44,597 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) [2022-12-13 09:36:44,600 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 [2022-12-13 09:36:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 09:36:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 09:36:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 09:36:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 09:36:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 09:36:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 09:36:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 09:36:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 09:36:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 09:36:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 09:36:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 09:36:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 09:36:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 09:36:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 09:36:44,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 09:36:44,630 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 09:36:44,721 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 09:36:44,722 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 09:36:44,908 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 09:36:44,912 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 09:36:44,913 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 09:36:44,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:36:44 BoogieIcfgContainer [2022-12-13 09:36:44,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 09:36:44,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 09:36:44,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 09:36:44,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 09:36:44,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:36:44" (1/3) ... [2022-12-13 09:36:44,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2c39b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:36:44, skipping insertion in model container [2022-12-13 09:36:44,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:36:44" (2/3) ... [2022-12-13 09:36:44,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2c39b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:36:44, skipping insertion in model container [2022-12-13 09:36:44,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:36:44" (3/3) ... [2022-12-13 09:36:44,920 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2022-12-13 09:36:44,934 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 09:36:44,934 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 09:36:44,934 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 09:36:45,002 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 09:36:45,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-13 09:36:45,105 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-13 09:36:45,105 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:36:45,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-13 09:36:45,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-13 09:36:45,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-13 09:36:45,113 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:36:45,123 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-13 09:36:45,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2022-12-13 09:36:45,156 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2022-12-13 09:36:45,157 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:36:45,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 09:36:45,160 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-13 09:36:45,160 INFO L226 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-13 09:36:46,882 INFO L241 LiptonReduction]: Total number of compositions: 53 [2022-12-13 09:36:46,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 09:36:46,910 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=REPEATED_LIPTON_PN, 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;@48950b52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_CONJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 09:36:46,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 09:36:46,913 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-12-13 09:36:46,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:36:46,913 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:36:46,913 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:36:46,914 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 1 more)] === [2022-12-13 09:36:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:36:46,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1273860417, now seen corresponding path program 1 times [2022-12-13 09:36:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:36:46,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17578564] [2022-12-13 09:36:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:36:46,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:36:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:36:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:36:47,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:36:47,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17578564] [2022-12-13 09:36:47,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17578564] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:36:47,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:36:47,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 09:36:47,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942213796] [2022-12-13 09:36:47,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:36:47,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:36:47,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:36:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:36:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:36:47,347 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2022-12-13 09:36:47,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-12-13 09:36:47,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:36:47,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2022-12-13 09:36:47,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:36:47,544 INFO L130 PetriNetUnfolder]: 947/1627 cut-off events. [2022-12-13 09:36:47,544 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 09:36:47,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3184 conditions, 1627 events. 947/1627 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 9808 event pairs, 300 based on Foata normal form. 62/1325 useless extension candidates. Maximal degree in co-relation 3173. Up to 994 conditions per place. [2022-12-13 09:36:47,556 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 28 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2022-12-13 09:36:47,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 158 flow [2022-12-13 09:36:47,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:36:47,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 09:36:47,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2022-12-13 09:36:47,564 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-12-13 09:36:47,565 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 63 flow. Second operand 3 states and 57 transitions. [2022-12-13 09:36:47,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 158 flow [2022-12-13 09:36:47,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 154 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 09:36:47,569 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 96 flow [2022-12-13 09:36:47,570 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2022-12-13 09:36:47,573 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-12-13 09:36:47,573 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:36:47,574 INFO L89 Accepts]: Start accepts. Operand has 37 places, 30 transitions, 96 flow [2022-12-13 09:36:47,576 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:36:47,576 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:36:47,576 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 30 transitions, 96 flow [2022-12-13 09:36:47,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 96 flow [2022-12-13 09:36:47,583 INFO L130 PetriNetUnfolder]: 24/126 cut-off events. [2022-12-13 09:36:47,583 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 09:36:47,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 126 events. 24/126 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 677 event pairs, 10 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 207. Up to 45 conditions per place. [2022-12-13 09:36:47,586 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 30 transitions, 96 flow [2022-12-13 09:36:47,586 INFO L226 LiptonReduction]: Number of co-enabled transitions 408 [2022-12-13 09:36:47,622 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:36:47,623 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 50 [2022-12-13 09:36:47,623 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 96 flow [2022-12-13 09:36:47,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-12-13 09:36:47,623 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:36:47,623 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:36:47,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 09:36:47,624 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 1 more)] === [2022-12-13 09:36:47,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:36:47,624 INFO L85 PathProgramCache]: Analyzing trace with hash 834967139, now seen corresponding path program 1 times [2022-12-13 09:36:47,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:36:47,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522440238] [2022-12-13 09:36:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:36:47,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:36:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:36:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:36:47,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:36:47,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522440238] [2022-12-13 09:36:47,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522440238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:36:47,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:36:47,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:36:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66497972] [2022-12-13 09:36:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:36:47,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:36:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:36:47,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:36:47,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:36:47,697 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 26 [2022-12-13 09:36:47,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-12-13 09:36:47,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:36:47,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 26 [2022-12-13 09:36:47,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:36:47,799 INFO L130 PetriNetUnfolder]: 898/1544 cut-off events. [2022-12-13 09:36:47,799 INFO L131 PetriNetUnfolder]: For 476/476 co-relation queries the response was YES. [2022-12-13 09:36:47,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 1544 events. 898/1544 cut-off events. For 476/476 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9133 event pairs, 212 based on Foata normal form. 15/1202 useless extension candidates. Maximal degree in co-relation 3613. Up to 795 conditions per place. [2022-12-13 09:36:47,806 INFO L137 encePairwiseOnDemand]: 20/26 looper letters, 32 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2022-12-13 09:36:47,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 210 flow [2022-12-13 09:36:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:36:47,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:36:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2022-12-13 09:36:47,808 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.625 [2022-12-13 09:36:47,808 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 96 flow. Second operand 4 states and 65 transitions. [2022-12-13 09:36:47,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 210 flow [2022-12-13 09:36:47,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 09:36:47,810 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 124 flow [2022-12-13 09:36:47,810 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2022-12-13 09:36:47,811 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-12-13 09:36:47,811 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:36:47,811 INFO L89 Accepts]: Start accepts. Operand has 41 places, 32 transitions, 124 flow [2022-12-13 09:36:47,812 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:36:47,812 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:36:47,812 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 32 transitions, 124 flow [2022-12-13 09:36:47,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 32 transitions, 124 flow [2022-12-13 09:36:47,818 INFO L130 PetriNetUnfolder]: 21/110 cut-off events. [2022-12-13 09:36:47,818 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-13 09:36:47,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 110 events. 21/110 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 521 event pairs, 4 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 214. Up to 40 conditions per place. [2022-12-13 09:36:47,819 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 32 transitions, 124 flow [2022-12-13 09:36:47,819 INFO L226 LiptonReduction]: Number of co-enabled transitions 424 [2022-12-13 09:36:47,822 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:36:47,823 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 12 [2022-12-13 09:36:47,823 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 124 flow [2022-12-13 09:36:47,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-12-13 09:36:47,823 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:36:47,823 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:36:47,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 09:36:47,824 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 1 more)] === [2022-12-13 09:36:47,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:36:47,824 INFO L85 PathProgramCache]: Analyzing trace with hash 834966767, now seen corresponding path program 1 times [2022-12-13 09:36:47,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:36:47,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195788336] [2022-12-13 09:36:47,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:36:47,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:36:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:36:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:36:47,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:36:47,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195788336] [2022-12-13 09:36:47,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195788336] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:36:47,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:36:47,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 09:36:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956140353] [2022-12-13 09:36:47,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:36:47,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 09:36:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:36:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 09:36:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 09:36:47,884 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 26 [2022-12-13 09:36:47,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-12-13 09:36:47,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:36:47,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 26 [2022-12-13 09:36:47,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:36:47,993 INFO L130 PetriNetUnfolder]: 773/1393 cut-off events. [2022-12-13 09:36:47,993 INFO L131 PetriNetUnfolder]: For 874/874 co-relation queries the response was YES. [2022-12-13 09:36:47,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3402 conditions, 1393 events. 773/1393 cut-off events. For 874/874 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8475 event pairs, 425 based on Foata normal form. 8/1078 useless extension candidates. Maximal degree in co-relation 3387. Up to 1154 conditions per place. [2022-12-13 09:36:47,999 INFO L137 encePairwiseOnDemand]: 22/26 looper letters, 30 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2022-12-13 09:36:47,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 240 flow [2022-12-13 09:36:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 09:36:48,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 09:36:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2022-12-13 09:36:48,001 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2022-12-13 09:36:48,001 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 124 flow. Second operand 3 states and 54 transitions. [2022-12-13 09:36:48,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 240 flow [2022-12-13 09:36:48,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 09:36:48,003 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 162 flow [2022-12-13 09:36:48,003 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2022-12-13 09:36:48,004 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-13 09:36:48,004 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:36:48,004 INFO L89 Accepts]: Start accepts. Operand has 43 places, 35 transitions, 162 flow [2022-12-13 09:36:48,005 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:36:48,005 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:36:48,005 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 35 transitions, 162 flow [2022-12-13 09:36:48,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 35 transitions, 162 flow [2022-12-13 09:36:48,010 INFO L130 PetriNetUnfolder]: 15/94 cut-off events. [2022-12-13 09:36:48,010 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-12-13 09:36:48,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 94 events. 15/94 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 423 event pairs, 3 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 203. Up to 32 conditions per place. [2022-12-13 09:36:48,011 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 35 transitions, 162 flow [2022-12-13 09:36:48,011 INFO L226 LiptonReduction]: Number of co-enabled transitions 448 [2022-12-13 09:36:48,014 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:36:48,015 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 11 [2022-12-13 09:36:48,015 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 162 flow [2022-12-13 09:36:48,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2022-12-13 09:36:48,016 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:36:48,016 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:36:48,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 09:36:48,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 09:36:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:36:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash 114177037, now seen corresponding path program 1 times [2022-12-13 09:36:48,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:36:48,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481651652] [2022-12-13 09:36:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:36:48,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:36:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:36:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:36:48,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:36:48,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481651652] [2022-12-13 09:36:48,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481651652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:36:48,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:36:48,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:36:48,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383230809] [2022-12-13 09:36:48,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:36:48,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:36:48,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:36:48,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:36:48,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:36:48,082 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 26 [2022-12-13 09:36:48,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-12-13 09:36:48,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:36:48,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 26 [2022-12-13 09:36:48,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:36:48,212 INFO L130 PetriNetUnfolder]: 1013/1852 cut-off events. [2022-12-13 09:36:48,212 INFO L131 PetriNetUnfolder]: For 1457/1510 co-relation queries the response was YES. [2022-12-13 09:36:48,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4371 conditions, 1852 events. 1013/1852 cut-off events. For 1457/1510 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 12017 event pairs, 227 based on Foata normal form. 97/1482 useless extension candidates. Maximal degree in co-relation 4354. Up to 614 conditions per place. [2022-12-13 09:36:48,221 INFO L137 encePairwiseOnDemand]: 22/26 looper letters, 28 selfloop transitions, 4 changer transitions 10/53 dead transitions. [2022-12-13 09:36:48,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 292 flow [2022-12-13 09:36:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 09:36:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 09:36:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2022-12-13 09:36:48,223 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6634615384615384 [2022-12-13 09:36:48,223 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 162 flow. Second operand 4 states and 69 transitions. [2022-12-13 09:36:48,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 292 flow [2022-12-13 09:36:48,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 285 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 09:36:48,225 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 142 flow [2022-12-13 09:36:48,225 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2022-12-13 09:36:48,226 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2022-12-13 09:36:48,226 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:36:48,226 INFO L89 Accepts]: Start accepts. Operand has 47 places, 31 transitions, 142 flow [2022-12-13 09:36:48,227 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:36:48,227 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:36:48,227 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 31 transitions, 142 flow [2022-12-13 09:36:48,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 31 transitions, 142 flow [2022-12-13 09:36:48,231 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-13 09:36:48,231 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-12-13 09:36:48,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 64 events. 5/64 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 236 event pairs, 2 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 140. Up to 16 conditions per place. [2022-12-13 09:36:48,232 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 31 transitions, 142 flow [2022-12-13 09:36:48,232 INFO L226 LiptonReduction]: Number of co-enabled transitions 362 [2022-12-13 09:36:48,276 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 09:36:48,277 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 51 [2022-12-13 09:36:48,277 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 144 flow [2022-12-13 09:36:48,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2022-12-13 09:36:48,277 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:36:48,277 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:36:48,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 09:36:48,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 09:36:48,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:36:48,278 INFO L85 PathProgramCache]: Analyzing trace with hash 171108599, now seen corresponding path program 1 times [2022-12-13 09:36:48,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:36:48,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133503450] [2022-12-13 09:36:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:36:48,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:36:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:36:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:36:48,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:36:48,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133503450] [2022-12-13 09:36:48,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133503450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:36:48,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:36:48,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 09:36:48,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537223961] [2022-12-13 09:36:48,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:36:48,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:36:48,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:36:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:36:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:36:48,361 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 26 [2022-12-13 09:36:48,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2022-12-13 09:36:48,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:36:48,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 26 [2022-12-13 09:36:48,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:36:48,553 INFO L130 PetriNetUnfolder]: 1325/2195 cut-off events. [2022-12-13 09:36:48,553 INFO L131 PetriNetUnfolder]: For 4394/4476 co-relation queries the response was YES. [2022-12-13 09:36:48,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5812 conditions, 2195 events. 1325/2195 cut-off events. For 4394/4476 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 13759 event pairs, 467 based on Foata normal form. 106/1250 useless extension candidates. Maximal degree in co-relation 5792. Up to 1645 conditions per place. [2022-12-13 09:36:48,563 INFO L137 encePairwiseOnDemand]: 14/26 looper letters, 40 selfloop transitions, 17 changer transitions 10/75 dead transitions. [2022-12-13 09:36:48,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 458 flow [2022-12-13 09:36:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 09:36:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 09:36:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2022-12-13 09:36:48,564 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2022-12-13 09:36:48,564 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 144 flow. Second operand 5 states and 90 transitions. [2022-12-13 09:36:48,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 458 flow [2022-12-13 09:36:48,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 401 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-12-13 09:36:48,568 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 249 flow [2022-12-13 09:36:48,568 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2022-12-13 09:36:48,569 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2022-12-13 09:36:48,569 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:36:48,569 INFO L89 Accepts]: Start accepts. Operand has 48 places, 46 transitions, 249 flow [2022-12-13 09:36:48,569 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:36:48,569 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:36:48,569 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 249 flow [2022-12-13 09:36:48,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 249 flow [2022-12-13 09:36:48,654 INFO L130 PetriNetUnfolder]: 878/1511 cut-off events. [2022-12-13 09:36:48,654 INFO L131 PetriNetUnfolder]: For 1035/1611 co-relation queries the response was YES. [2022-12-13 09:36:48,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4578 conditions, 1511 events. 878/1511 cut-off events. For 1035/1611 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 10228 event pairs, 432 based on Foata normal form. 2/631 useless extension candidates. Maximal degree in co-relation 4561. Up to 1337 conditions per place. [2022-12-13 09:36:48,662 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 46 transitions, 249 flow [2022-12-13 09:36:48,662 INFO L226 LiptonReduction]: Number of co-enabled transitions 490 [2022-12-13 09:36:48,700 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [237] L783-3-->L2: Formula: (and (= (ite (= 0 (ite (= v_~__unbuffered_cnt~0_159 3) 1 0)) 0 1) v_~main$tmp_guard0~0_36) (= (mod v_~main$tmp_guard0~0_36 256) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_25|, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_27|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_33|, ~main$tmp_guard0~0=v_~main$tmp_guard0~0_36, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_main_#t~nondet8#1, ULTIMATE.start_main_#t~pre7#1, ~main$tmp_guard0~0, ULTIMATE.start_assume_abort_if_not_#in~cond#1] and [239] L729-->P0EXIT: Formula: (and (= |v_P0Thread1of1ForFork1_#res.base_25| 0) (= v_~__unbuffered_cnt~0_189 (+ v_~__unbuffered_cnt~0_190 1)) (= |v_P0Thread1of1ForFork1_#res.offset_25| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_190} OutVars{P0Thread1of1ForFork1_#res.offset=|v_P0Thread1of1ForFork1_#res.offset_25|, P0Thread1of1ForFork1_#res.base=|v_P0Thread1of1ForFork1_#res.base_25|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_189} AuxVars[] AssignedVars[P0Thread1of1ForFork1_#res.offset, P0Thread1of1ForFork1_#res.base, ~__unbuffered_cnt~0] [2022-12-13 09:36:48,717 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [237] L783-3-->L2: Formula: (and (= (ite (= 0 (ite (= v_~__unbuffered_cnt~0_159 3) 1 0)) 0 1) v_~main$tmp_guard0~0_36) (= (mod v_~main$tmp_guard0~0_36 256) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_25|, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_27|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_33|, ~main$tmp_guard0~0=v_~main$tmp_guard0~0_36, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_main_#t~nondet8#1, ULTIMATE.start_main_#t~pre7#1, ~main$tmp_guard0~0, ULTIMATE.start_assume_abort_if_not_#in~cond#1] and [185] L744-->L749: Formula: (= v_~__unbuffered_cnt~0_3 (+ v_~__unbuffered_cnt~0_4 1)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_4} OutVars{~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_3} AuxVars[] AssignedVars[~__unbuffered_cnt~0] [2022-12-13 09:36:48,728 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [237] L783-3-->L2: Formula: (and (= (ite (= 0 (ite (= v_~__unbuffered_cnt~0_159 3) 1 0)) 0 1) v_~main$tmp_guard0~0_36) (= (mod v_~main$tmp_guard0~0_36 256) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_25|, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_27|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_33|, ~main$tmp_guard0~0=v_~main$tmp_guard0~0_36, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_main_#t~nondet8#1, ULTIMATE.start_main_#t~pre7#1, ~main$tmp_guard0~0, ULTIMATE.start_assume_abort_if_not_#in~cond#1] and [225] L744-->P1FINAL: Formula: (and (= v_~__unbuffered_cnt~0_65 (+ v_~__unbuffered_cnt~0_66 1)) (= |v_P1Thread1of1ForFork2_#res.base_5| 0) (= |v_P1Thread1of1ForFork2_#res.offset_5| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_66} OutVars{P1Thread1of1ForFork2_#res.offset=|v_P1Thread1of1ForFork2_#res.offset_5|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_65, P1Thread1of1ForFork2_#res.base=|v_P1Thread1of1ForFork2_#res.base_5|} AuxVars[] AssignedVars[P1Thread1of1ForFork2_#res.offset, ~__unbuffered_cnt~0, P1Thread1of1ForFork2_#res.base] [2022-12-13 09:36:48,745 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [237] L783-3-->L2: Formula: (and (= (ite (= 0 (ite (= v_~__unbuffered_cnt~0_159 3) 1 0)) 0 1) v_~main$tmp_guard0~0_36) (= (mod v_~main$tmp_guard0~0_36 256) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_25|, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_27|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_33|, ~main$tmp_guard0~0=v_~main$tmp_guard0~0_36, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_main_#t~nondet8#1, ULTIMATE.start_main_#t~pre7#1, ~main$tmp_guard0~0, ULTIMATE.start_assume_abort_if_not_#in~cond#1] and [179] L729-->L734: Formula: (= v_~__unbuffered_cnt~0_1 (+ v_~__unbuffered_cnt~0_2 1)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_2} OutVars{~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_1} AuxVars[] AssignedVars[~__unbuffered_cnt~0] [2022-12-13 09:36:48,758 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [237] L783-3-->L2: Formula: (and (= (ite (= 0 (ite (= v_~__unbuffered_cnt~0_159 3) 1 0)) 0 1) v_~main$tmp_guard0~0_36) (= (mod v_~main$tmp_guard0~0_36 256) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_25|, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_27|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_33|, ~main$tmp_guard0~0=v_~main$tmp_guard0~0_36, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_main_#t~nondet8#1, ULTIMATE.start_main_#t~pre7#1, ~main$tmp_guard0~0, ULTIMATE.start_assume_abort_if_not_#in~cond#1] and [244] L744-->P1EXIT: Formula: (and (= v_~__unbuffered_cnt~0_209 (+ v_~__unbuffered_cnt~0_210 1)) (= |v_P1Thread1of1ForFork2_#res.base_21| 0) (= 0 |v_P1Thread1of1ForFork2_#res.offset_21|)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_210} OutVars{P1Thread1of1ForFork2_#res.offset=|v_P1Thread1of1ForFork2_#res.offset_21|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_209, P1Thread1of1ForFork2_#res.base=|v_P1Thread1of1ForFork2_#res.base_21|} AuxVars[] AssignedVars[P1Thread1of1ForFork2_#res.offset, ~__unbuffered_cnt~0, P1Thread1of1ForFork2_#res.base] [2022-12-13 09:36:48,776 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [237] L783-3-->L2: Formula: (and (= (ite (= 0 (ite (= v_~__unbuffered_cnt~0_159 3) 1 0)) 0 1) v_~main$tmp_guard0~0_36) (= (mod v_~main$tmp_guard0~0_36 256) |v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159} OutVars{ULTIMATE.start_assume_abort_if_not_~cond#1=|v_ULTIMATE.start_assume_abort_if_not_~cond#1_25|, ULTIMATE.start_main_#t~nondet8#1=|v_ULTIMATE.start_main_#t~nondet8#1_27|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_159, ULTIMATE.start_main_#t~pre7#1=|v_ULTIMATE.start_main_#t~pre7#1_33|, ~main$tmp_guard0~0=v_~main$tmp_guard0~0_36, ULTIMATE.start_assume_abort_if_not_#in~cond#1=|v_ULTIMATE.start_assume_abort_if_not_#in~cond#1_17|} AuxVars[] AssignedVars[ULTIMATE.start_assume_abort_if_not_~cond#1, ULTIMATE.start_main_#t~nondet8#1, ULTIMATE.start_main_#t~pre7#1, ~main$tmp_guard0~0, ULTIMATE.start_assume_abort_if_not_#in~cond#1] and [202] L729-->P0FINAL: Formula: (and (= |v_P0Thread1of1ForFork1_#res.offset_5| 0) (= (+ v_~__unbuffered_cnt~0_26 1) v_~__unbuffered_cnt~0_25) (= |v_P0Thread1of1ForFork1_#res.base_5| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_26} OutVars{P0Thread1of1ForFork1_#res.offset=|v_P0Thread1of1ForFork1_#res.offset_5|, P0Thread1of1ForFork1_#res.base=|v_P0Thread1of1ForFork1_#res.base_5|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_25} AuxVars[] AssignedVars[P0Thread1of1ForFork1_#res.offset, P0Thread1of1ForFork1_#res.base, ~__unbuffered_cnt~0] [2022-12-13 09:36:48,982 INFO L241 LiptonReduction]: Total number of compositions: 2 [2022-12-13 09:36:48,999 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 430 [2022-12-13 09:36:48,999 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 237 flow [2022-12-13 09:36:49,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2022-12-13 09:36:49,000 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:36:49,000 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:36:49,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 09:36:49,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 09:36:49,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:36:49,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1008974418, now seen corresponding path program 1 times [2022-12-13 09:36:49,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:36:49,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041989493] [2022-12-13 09:36:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:36:49,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:36:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:36:49,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:36:49,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:36:49,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041989493] [2022-12-13 09:36:49,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041989493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:36:49,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:36:49,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:36:49,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720686941] [2022-12-13 09:36:49,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:36:49,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 09:36:49,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:36:49,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 09:36:49,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 09:36:49,087 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2022-12-13 09:36:49,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-12-13 09:36:49,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:36:49,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2022-12-13 09:36:49,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:36:49,262 INFO L130 PetriNetUnfolder]: 1021/1913 cut-off events. [2022-12-13 09:36:49,262 INFO L131 PetriNetUnfolder]: For 2415/2694 co-relation queries the response was YES. [2022-12-13 09:36:49,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7530 conditions, 1913 events. 1021/1913 cut-off events. For 2415/2694 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 13177 event pairs, 104 based on Foata normal form. 117/1130 useless extension candidates. Maximal degree in co-relation 7510. Up to 1492 conditions per place. [2022-12-13 09:36:49,270 INFO L137 encePairwiseOnDemand]: 14/29 looper letters, 36 selfloop transitions, 29 changer transitions 17/90 dead transitions. [2022-12-13 09:36:49,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 90 transitions, 671 flow [2022-12-13 09:36:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 09:36:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 09:36:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2022-12-13 09:36:49,272 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6264367816091954 [2022-12-13 09:36:49,272 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 237 flow. Second operand 6 states and 109 transitions. [2022-12-13 09:36:49,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 90 transitions, 671 flow [2022-12-13 09:36:49,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 655 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 09:36:49,277 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 438 flow [2022-12-13 09:36:49,278 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2022-12-13 09:36:49,278 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2022-12-13 09:36:49,278 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:36:49,278 INFO L89 Accepts]: Start accepts. Operand has 54 places, 58 transitions, 438 flow [2022-12-13 09:36:49,279 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:36:49,279 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:36:49,279 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 58 transitions, 438 flow [2022-12-13 09:36:49,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 58 transitions, 438 flow [2022-12-13 09:36:49,336 INFO L130 PetriNetUnfolder]: 470/1126 cut-off events. [2022-12-13 09:36:49,337 INFO L131 PetriNetUnfolder]: For 2400/4846 co-relation queries the response was YES. [2022-12-13 09:36:49,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5080 conditions, 1126 events. 470/1126 cut-off events. For 2400/4846 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 9426 event pairs, 90 based on Foata normal form. 6/505 useless extension candidates. Maximal degree in co-relation 5059. Up to 1015 conditions per place. [2022-12-13 09:36:49,346 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 58 transitions, 438 flow [2022-12-13 09:36:49,346 INFO L226 LiptonReduction]: Number of co-enabled transitions 504 [2022-12-13 09:36:49,452 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 09:36:49,453 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 175 [2022-12-13 09:36:49,453 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 57 transitions, 430 flow [2022-12-13 09:36:49,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-12-13 09:36:49,453 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:36:49,453 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:36:49,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 09:36:49,453 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 09:36:49,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:36:49,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1039640557, now seen corresponding path program 1 times [2022-12-13 09:36:49,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:36:49,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672202335] [2022-12-13 09:36:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:36:49,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:36:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:36:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:36:49,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:36:49,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672202335] [2022-12-13 09:36:49,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672202335] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:36:49,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:36:49,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 09:36:49,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426912670] [2022-12-13 09:36:49,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:36:49,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 09:36:49,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:36:49,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 09:36:49,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 09:36:49,548 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2022-12-13 09:36:49,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 57 transitions, 430 flow. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2022-12-13 09:36:49,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:36:49,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2022-12-13 09:36:49,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:36:49,689 INFO L130 PetriNetUnfolder]: 559/1208 cut-off events. [2022-12-13 09:36:49,690 INFO L131 PetriNetUnfolder]: For 2849/3257 co-relation queries the response was YES. [2022-12-13 09:36:49,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6016 conditions, 1208 events. 559/1208 cut-off events. For 2849/3257 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 8561 event pairs, 14 based on Foata normal form. 102/771 useless extension candidates. Maximal degree in co-relation 5992. Up to 925 conditions per place. [2022-12-13 09:36:49,695 INFO L137 encePairwiseOnDemand]: 14/29 looper letters, 24 selfloop transitions, 35 changer transitions 16/83 dead transitions. [2022-12-13 09:36:49,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 736 flow [2022-12-13 09:36:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 09:36:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 09:36:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2022-12-13 09:36:49,697 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2022-12-13 09:36:49,697 INFO L175 Difference]: Start difference. First operand has 54 places, 57 transitions, 430 flow. Second operand 8 states and 112 transitions. [2022-12-13 09:36:49,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 736 flow [2022-12-13 09:36:49,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 670 flow, removed 25 selfloop flow, removed 2 redundant places. [2022-12-13 09:36:49,718 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 439 flow [2022-12-13 09:36:49,718 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=439, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2022-12-13 09:36:49,718 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-12-13 09:36:49,718 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 09:36:49,719 INFO L89 Accepts]: Start accepts. Operand has 62 places, 55 transitions, 439 flow [2022-12-13 09:36:49,719 INFO L95 Accepts]: Finished accepts. [2022-12-13 09:36:49,719 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:36:49,720 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 55 transitions, 439 flow [2022-12-13 09:36:49,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 55 transitions, 439 flow [2022-12-13 09:36:49,781 INFO L130 PetriNetUnfolder]: 182/553 cut-off events. [2022-12-13 09:36:49,782 INFO L131 PetriNetUnfolder]: For 1220/1557 co-relation queries the response was YES. [2022-12-13 09:36:49,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2782 conditions, 553 events. 182/553 cut-off events. For 1220/1557 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 4353 event pairs, 0 based on Foata normal form. 4/278 useless extension candidates. Maximal degree in co-relation 2758. Up to 325 conditions per place. [2022-12-13 09:36:49,786 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 55 transitions, 439 flow [2022-12-13 09:36:49,786 INFO L226 LiptonReduction]: Number of co-enabled transitions 430 [2022-12-13 09:36:49,859 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 09:36:49,860 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 142 [2022-12-13 09:36:49,860 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 391 flow [2022-12-13 09:36:49,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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) [2022-12-13 09:36:49,860 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 09:36:49,860 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:36:49,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 09:36:49,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 09:36:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 09:36:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1872339674, now seen corresponding path program 1 times [2022-12-13 09:36:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 09:36:49,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741646507] [2022-12-13 09:36:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 09:36:49,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 09:36:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 09:36:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 09:36:49,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 09:36:49,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741646507] [2022-12-13 09:36:49,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741646507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 09:36:49,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 09:36:49,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 09:36:49,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719029101] [2022-12-13 09:36:49,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 09:36:49,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 09:36:49,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 09:36:49,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 09:36:49,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 09:36:49,932 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 25 [2022-12-13 09:36:49,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-12-13 09:36:49,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 09:36:49,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 25 [2022-12-13 09:36:49,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 09:36:50,022 INFO L130 PetriNetUnfolder]: 438/785 cut-off events. [2022-12-13 09:36:50,023 INFO L131 PetriNetUnfolder]: For 2526/2591 co-relation queries the response was YES. [2022-12-13 09:36:50,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3874 conditions, 785 events. 438/785 cut-off events. For 2526/2591 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3987 event pairs, 24 based on Foata normal form. 58/638 useless extension candidates. Maximal degree in co-relation 3858. Up to 401 conditions per place. [2022-12-13 09:36:50,026 INFO L137 encePairwiseOnDemand]: 17/25 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2022-12-13 09:36:50,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 79 transitions, 691 flow [2022-12-13 09:36:50,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 09:36:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 09:36:50,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2022-12-13 09:36:50,027 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.592 [2022-12-13 09:36:50,028 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 391 flow. Second operand 5 states and 74 transitions. [2022-12-13 09:36:50,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 79 transitions, 691 flow [2022-12-13 09:36:50,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 79 transitions, 453 flow, removed 30 selfloop flow, removed 10 redundant places. [2022-12-13 09:36:50,050 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2022-12-13 09:36:50,050 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2022-12-13 09:36:50,053 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2022-12-13 09:36:50,053 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 09:36:50,053 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 0 transitions, 0 flow [2022-12-13 09:36:50,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2022-12-13 09:36:50,053 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 09:36:50,053 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 09:36:50,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2022-12-13 09:36:50,054 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2022-12-13 09:36:50,054 INFO L226 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-13 09:36:50,054 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 09:36:50,055 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2 [2022-12-13 09:36:50,056 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-13 09:36:50,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2022-12-13 09:36:50,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 09:36:50,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 09:36:50,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 09:36:50,058 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 09:36:50,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 09:36:50,058 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 09:36:50,060 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 09:36:50,061 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 09:36:50,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:36:50 BasicIcfg [2022-12-13 09:36:50,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 09:36:50,063 INFO L158 Benchmark]: Toolchain (without parser) took 6009.52ms. Allocated memory was 211.8MB in the beginning and 361.8MB in the end (delta: 149.9MB). Free memory was 187.5MB in the beginning and 147.3MB in the end (delta: 40.2MB). Peak memory consumption was 191.4MB. Max. memory is 8.0GB. [2022-12-13 09:36:50,063 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 188.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 09:36:50,063 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.06ms. Allocated memory is still 211.8MB. Free memory was 187.2MB in the beginning and 164.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-13 09:36:50,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.78ms. Allocated memory is still 211.8MB. Free memory was 164.1MB in the beginning and 162.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 09:36:50,063 INFO L158 Benchmark]: Boogie Preprocessor took 38.64ms. Allocated memory is still 211.8MB. Free memory was 162.0MB in the beginning and 160.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 09:36:50,064 INFO L158 Benchmark]: RCFGBuilder took 356.80ms. Allocated memory is still 211.8MB. Free memory was 160.4MB in the beginning and 147.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-13 09:36:50,064 INFO L158 Benchmark]: TraceAbstraction took 5146.30ms. Allocated memory was 211.8MB in the beginning and 361.8MB in the end (delta: 149.9MB). Free memory was 145.7MB in the beginning and 147.3MB in the end (delta: -1.6MB). Peak memory consumption was 149.4MB. Max. memory is 8.0GB. [2022-12-13 09:36:50,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 188.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 420.06ms. Allocated memory is still 211.8MB. Free memory was 187.2MB in the beginning and 164.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.78ms. Allocated memory is still 211.8MB. Free memory was 164.1MB in the beginning and 162.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.64ms. Allocated memory is still 211.8MB. Free memory was 162.0MB in the beginning and 160.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 356.80ms. Allocated memory is still 211.8MB. Free memory was 160.4MB in the beginning and 147.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5146.30ms. Allocated memory was 211.8MB in the beginning and 361.8MB in the end (delta: 149.9MB). Free memory was 145.7MB in the beginning and 147.3MB in the end (delta: -1.6MB). Peak memory consumption was 149.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 79 PlacesBefore, 36 PlacesAfterwards, 70 TransitionsBefore, 27 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1171, independent: 1114, independent conditional: 1114, independent unconditional: 0, dependent: 57, dependent conditional: 57, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 925, independent: 883, independent conditional: 0, independent unconditional: 883, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 925, independent: 883, independent conditional: 0, independent unconditional: 883, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 925, independent: 844, independent conditional: 0, independent unconditional: 844, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 81, independent: 39, independent conditional: 0, independent unconditional: 39, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 152, independent: 76, independent conditional: 0, independent unconditional: 76, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1171, independent: 231, independent conditional: 231, independent unconditional: 0, dependent: 15, dependent conditional: 15, dependent unconditional: 0, unknown: 925, unknown conditional: 925, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 925, Positive cache size: 883, Positive conditional cache size: 883, Positive unconditional cache size: 0, Negative cache size: 42, Negative conditional cache size: 42, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 37 PlacesBefore, 37 PlacesAfterwards, 30 TransitionsBefore, 30 TransitionsAfterwards, 408 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 111, independent: 101, independent conditional: 101, independent unconditional: 0, dependent: 10, dependent conditional: 10, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 69, independent: 62, independent conditional: 3, independent unconditional: 59, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 69, independent: 62, independent conditional: 3, independent unconditional: 59, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 69, independent: 53, independent conditional: 0, independent unconditional: 53, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 13, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 111, independent: 39, independent conditional: 39, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 69, unknown conditional: 69, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 62, Positive conditional cache size: 62, Positive unconditional cache size: 0, Negative cache size: 7, Negative conditional cache size: 7, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 41 PlacesBefore, 41 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 424 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 154, independent: 141, independent conditional: 141, independent unconditional: 0, dependent: 13, dependent conditional: 13, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, independent: 15, independent conditional: 3, independent unconditional: 12, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 17, independent: 15, independent conditional: 3, independent unconditional: 12, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 17, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 154, independent: 126, independent conditional: 126, independent unconditional: 0, dependent: 11, dependent conditional: 11, dependent unconditional: 0, unknown: 17, unknown conditional: 17, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 77, Positive conditional cache size: 77, Positive unconditional cache size: 0, Negative cache size: 9, Negative conditional cache size: 9, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 43 PlacesBefore, 43 PlacesAfterwards, 35 TransitionsBefore, 35 TransitionsAfterwards, 448 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 200, independent: 184, independent conditional: 184, independent unconditional: 0, dependent: 16, dependent conditional: 16, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, independent: 17, independent conditional: 8, independent unconditional: 9, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 19, independent: 17, independent conditional: 8, independent unconditional: 9, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 19, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 200, independent: 167, independent conditional: 167, independent unconditional: 0, dependent: 14, dependent conditional: 14, dependent unconditional: 0, unknown: 19, unknown conditional: 19, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 94, Positive conditional cache size: 94, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 47 PlacesBefore, 46 PlacesAfterwards, 31 TransitionsBefore, 30 TransitionsAfterwards, 362 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 136, independent: 125, independent conditional: 125, independent unconditional: 0, dependent: 11, dependent conditional: 11, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, independent: 13, independent conditional: 13, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 13, independent: 13, independent conditional: 13, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 13, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 136, independent: 112, independent conditional: 112, independent unconditional: 0, dependent: 11, dependent conditional: 11, dependent unconditional: 0, unknown: 13, unknown conditional: 13, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 107, Positive conditional cache size: 107, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 48 PlacesBefore, 47 PlacesAfterwards, 46 TransitionsBefore, 42 TransitionsAfterwards, 490 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 213, independent: 207, independent conditional: 207, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 52, independent: 52, independent conditional: 48, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 52, independent: 52, independent conditional: 48, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 52, independent: 52, independent conditional: 0, independent unconditional: 52, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 213, independent: 155, independent conditional: 155, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 52, unknown conditional: 52, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 159, Positive conditional cache size: 159, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 54 PlacesBefore, 54 PlacesAfterwards, 58 TransitionsBefore, 57 TransitionsAfterwards, 504 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 128, independent: 122, independent conditional: 122, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, independent: 22, independent conditional: 21, independent unconditional: 1, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 22, independent: 22, independent conditional: 21, independent unconditional: 1, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 22, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 128, independent: 100, independent conditional: 100, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 22, unknown conditional: 22, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 192, Positive cache size: 181, Positive conditional cache size: 181, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 61 PlacesBefore, 59 PlacesAfterwards, 55 TransitionsBefore, 50 TransitionsAfterwards, 430 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 158, independent: 152, independent conditional: 152, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 42, independent: 42, independent conditional: 42, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 42, independent: 42, independent conditional: 42, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 42, independent: 42, independent conditional: 0, independent unconditional: 42, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 158, independent: 110, independent conditional: 110, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 42, unknown conditional: 42, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 234, Positive cache size: 223, Positive conditional cache size: 223, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 0 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 234, Positive cache size: 223, Positive conditional cache size: 223, Positive unconditional cache size: 0, Negative cache size: 11, Negative conditional cache size: 11, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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 7 procedures, 108 locations, 4 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: 5.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 191 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 542 IncrementalHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 10 mSDtfsCounter, 542 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=439occurred in iteration=7, InterpolantAutomatonStates: 38, 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, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2022-12-13 09:36:50,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...