/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-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:41:16,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:41:16,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:41:16,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:41:16,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:41:16,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:41:16,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:41:16,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:41:16,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:41:16,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:41:16,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:41:16,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:41:16,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:41:16,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:41:16,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:41:16,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:41:16,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:41:16,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:41:16,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:41:16,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:41:16,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:41:16,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:41:16,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:41:16,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:41:16,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:41:16,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:41:16,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:41:16,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:41:16,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:41:16,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:41:16,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:41:16,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:41:16,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:41:16,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:41:16,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:41:16,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:41:16,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:41:16,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:41:16,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:41:17,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:41:17,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:41:17,002 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-SemanticLbe.epf [2022-12-12 18:41:17,038 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:41:17,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:41:17,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:41:17,040 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:41:17,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:41:17,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:41:17,042 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:41:17,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:41:17,042 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:41:17,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:41:17,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:41:17,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:41:17,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:41:17,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:41:17,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:41:17,043 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:41:17,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:41:17,044 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:41:17,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:41:17,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:41:17,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:41:17,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:41:17,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:41:17,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:41:17,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:41:17,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:41:17,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:41:17,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:41:17,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:41:17,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:41:17,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:41:17,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:41:17,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:41:17,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:41:17,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:41:17,409 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:41:17,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2022-12-12 18:41:18,602 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:41:18,816 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:41:18,816 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2022-12-12 18:41:18,829 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f815f69e/05b0422ab24b4fe9a76684353541904e/FLAG425321eb5 [2022-12-12 18:41:18,843 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f815f69e/05b0422ab24b4fe9a76684353541904e [2022-12-12 18:41:18,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:41:18,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:41:18,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:41:18,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:41:18,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:41:18,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:41:18" (1/1) ... [2022-12-12 18:41:18,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e57c279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:18, skipping insertion in model container [2022-12-12 18:41:18,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:41:18" (1/1) ... [2022-12-12 18:41:18,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:41:18,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:41:19,052 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/safe002_tso.i[945,958] [2022-12-12 18:41:19,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:41:19,240 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:41:19,253 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/safe002_tso.i[945,958] [2022-12-12 18:41:19,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,288 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:41:19,301 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:41:19,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:41:19,346 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:41:19,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19 WrapperNode [2022-12-12 18:41:19,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:41:19,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:41:19,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:41:19,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:41:19,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,404 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-12 18:41:19,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:41:19,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:41:19,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:41:19,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:41:19,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:41:19,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:41:19,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:41:19,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:41:19,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (1/1) ... [2022-12-12 18:41:19,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:41:19,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:41:19,481 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) [2022-12-12 18:41:19,503 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 [2022-12-12 18:41:19,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:41:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 18:41:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:41:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:41:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:41:19,525 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 18:41:19,525 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 18:41:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 18:41:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 18:41:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 18:41:19,526 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 18:41:19,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:41:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 18:41:19,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:41:19,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:41:19,528 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 18:41:19,702 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:41:19,704 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:41:19,879 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:41:19,885 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:41:19,885 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 18:41:19,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:41:19 BoogieIcfgContainer [2022-12-12 18:41:19,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:41:19,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:41:19,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:41:19,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:41:19,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:41:18" (1/3) ... [2022-12-12 18:41:19,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14afcc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:41:19, skipping insertion in model container [2022-12-12 18:41:19,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:41:19" (2/3) ... [2022-12-12 18:41:19,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14afcc58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:41:19, skipping insertion in model container [2022-12-12 18:41:19,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:41:19" (3/3) ... [2022-12-12 18:41:19,895 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2022-12-12 18:41:19,909 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:41:19,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 18:41:19,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:41:19,973 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 18:41:20,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 18:41:20,053 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-12 18:41:20,053 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:41:20,057 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. [2022-12-12 18:41:20,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 18:41:20,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-12 18:41:20,062 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:41:20,086 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-12 18:41:20,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2022-12-12 18:41:20,124 INFO L130 PetriNetUnfolder]: 1/70 cut-off events. [2022-12-12 18:41:20,125 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:41:20,125 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. [2022-12-12 18:41:20,127 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2022-12-12 18:41:20,128 INFO L226 LiptonReduction]: Number of co-enabled transitions 1044 [2022-12-12 18:41:22,331 INFO L241 LiptonReduction]: Total number of compositions: 53 [2022-12-12 18:41:22,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:41:22,358 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@283207b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:41:22,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 18:41:22,363 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-12-12 18:41:22,363 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:41:22,364 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:22,364 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:22,364 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)] === [2022-12-12 18:41:22,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1488658015, now seen corresponding path program 1 times [2022-12-12 18:41:22,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:22,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236748146] [2022-12-12 18:41:22,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:22,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:22,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:22,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236748146] [2022-12-12 18:41:22,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236748146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:22,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:22,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 18:41:22,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543131162] [2022-12-12 18:41:22,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:22,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:41:22,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:22,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:41:22,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:41:22,915 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:41:22,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-12-12 18:41:22,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:22,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:41:22,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:23,214 INFO L130 PetriNetUnfolder]: 1244/2099 cut-off events. [2022-12-12 18:41:23,214 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-12 18:41:23,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4115 conditions, 2099 events. 1244/2099 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11889 event pairs, 409 based on Foata normal form. 87/1762 useless extension candidates. Maximal degree in co-relation 4104. Up to 1212 conditions per place. [2022-12-12 18:41:23,232 INFO L137 encePairwiseOnDemand]: 19/27 looper letters, 31 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2022-12-12 18:41:23,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 175 flow [2022-12-12 18:41:23,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:41:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:41:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-12-12 18:41:23,243 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7160493827160493 [2022-12-12 18:41:23,247 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2022-12-12 18:41:23,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 43 transitions, 175 flow [2022-12-12 18:41:23,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 43 transitions, 175 flow [2022-12-12 18:41:23,259 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 43 transitions, 175 flow [2022-12-12 18:41:23,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-12-12 18:41:23,260 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:23,260 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:23,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:41:23,260 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)] === [2022-12-12 18:41:23,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:23,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1096242255, now seen corresponding path program 1 times [2022-12-12 18:41:23,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:23,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975074363] [2022-12-12 18:41:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:23,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:23,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:23,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975074363] [2022-12-12 18:41:23,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975074363] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:23,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:23,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:41:23,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245259363] [2022-12-12 18:41:23,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:23,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:41:23,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:23,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:41:23,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:41:23,449 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:41:23,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 43 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2022-12-12 18:41:23,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:23,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:41:23,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:23,655 INFO L130 PetriNetUnfolder]: 1162/1947 cut-off events. [2022-12-12 18:41:23,656 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-12 18:41:23,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 1947 events. 1162/1947 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10401 event pairs, 112 based on Foata normal form. 20/1561 useless extension candidates. Maximal degree in co-relation 5631. Up to 1152 conditions per place. [2022-12-12 18:41:23,670 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 47 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2022-12-12 18:41:23,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 351 flow [2022-12-12 18:41:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:41:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:41:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2022-12-12 18:41:23,673 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2022-12-12 18:41:23,674 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-12-12 18:41:23,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 60 transitions, 351 flow [2022-12-12 18:41:23,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 60 transitions, 351 flow [2022-12-12 18:41:23,687 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 60 transitions, 351 flow [2022-12-12 18:41:23,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 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) [2022-12-12 18:41:23,688 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:23,688 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:23,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:41:23,688 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)] === [2022-12-12 18:41:23,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash -376252985, now seen corresponding path program 1 times [2022-12-12 18:41:23,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:23,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465306670] [2022-12-12 18:41:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:23,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:23,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:23,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465306670] [2022-12-12 18:41:23,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465306670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:23,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:23,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:41:23,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743499734] [2022-12-12 18:41:23,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:23,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:41:23,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:23,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:41:23,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:41:23,889 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:41:23,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 60 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2022-12-12 18:41:23,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:23,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:41:23,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:24,123 INFO L130 PetriNetUnfolder]: 1250/2122 cut-off events. [2022-12-12 18:41:24,124 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-12-12 18:41:24,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8035 conditions, 2122 events. 1250/2122 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 12002 event pairs, 39 based on Foata normal form. 95/1767 useless extension candidates. Maximal degree in co-relation 8018. Up to 1353 conditions per place. [2022-12-12 18:41:24,136 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 50 selfloop transitions, 8 changer transitions 39/103 dead transitions. [2022-12-12 18:41:24,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 103 transitions, 809 flow [2022-12-12 18:41:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:41:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:41:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 81 transitions. [2022-12-12 18:41:24,137 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6 [2022-12-12 18:41:24,138 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-12-12 18:41:24,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 103 transitions, 809 flow [2022-12-12 18:41:24,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 64 transitions, 497 flow [2022-12-12 18:41:24,148 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 64 transitions, 497 flow [2022-12-12 18:41:24,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2022-12-12 18:41:24,149 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:24,149 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:24,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 18:41:24,149 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)] === [2022-12-12 18:41:24,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash -450430627, now seen corresponding path program 1 times [2022-12-12 18:41:24,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:24,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959164579] [2022-12-12 18:41:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:24,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:24,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:24,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959164579] [2022-12-12 18:41:24,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959164579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:24,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:24,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:41:24,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553957002] [2022-12-12 18:41:24,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:24,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:41:24,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:41:24,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:41:24,238 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:41:24,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 64 transitions, 497 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 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) [2022-12-12 18:41:24,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:24,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:41:24,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:24,355 INFO L130 PetriNetUnfolder]: 610/1043 cut-off events. [2022-12-12 18:41:24,356 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-12 18:41:24,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4981 conditions, 1043 events. 610/1043 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4841 event pairs, 33 based on Foata normal form. 9/834 useless extension candidates. Maximal degree in co-relation 4961. Up to 718 conditions per place. [2022-12-12 18:41:24,364 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 63 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2022-12-12 18:41:24,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 766 flow [2022-12-12 18:41:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:41:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:41:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2022-12-12 18:41:24,365 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2022-12-12 18:41:24,366 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2022-12-12 18:41:24,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 79 transitions, 766 flow [2022-12-12 18:41:24,373 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 79 transitions, 766 flow [2022-12-12 18:41:24,374 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 79 transitions, 766 flow [2022-12-12 18:41:24,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 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) [2022-12-12 18:41:24,374 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:24,374 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:24,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 18:41:24,375 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)] === [2022-12-12 18:41:24,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:24,375 INFO L85 PathProgramCache]: Analyzing trace with hash -468862669, now seen corresponding path program 1 times [2022-12-12 18:41:24,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:24,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257870499] [2022-12-12 18:41:24,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:24,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:24,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:24,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257870499] [2022-12-12 18:41:24,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257870499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:24,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:24,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:41:24,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792559904] [2022-12-12 18:41:24,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:24,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:41:24,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:24,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:41:24,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:41:24,484 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:41:24,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 79 transitions, 766 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 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) [2022-12-12 18:41:24,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:24,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:41:24,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:24,608 INFO L130 PetriNetUnfolder]: 581/1002 cut-off events. [2022-12-12 18:41:24,608 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-12-12 18:41:24,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5697 conditions, 1002 events. 581/1002 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4673 event pairs, 27 based on Foata normal form. 12/803 useless extension candidates. Maximal degree in co-relation 5674. Up to 677 conditions per place. [2022-12-12 18:41:24,616 INFO L137 encePairwiseOnDemand]: 22/27 looper letters, 72 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2022-12-12 18:41:24,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 85 transitions, 984 flow [2022-12-12 18:41:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:41:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:41:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2022-12-12 18:41:24,618 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2022-12-12 18:41:24,618 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2022-12-12 18:41:24,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 85 transitions, 984 flow [2022-12-12 18:41:24,626 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 85 transitions, 984 flow [2022-12-12 18:41:24,626 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 85 transitions, 984 flow [2022-12-12 18:41:24,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 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) [2022-12-12 18:41:24,626 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:24,627 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:24,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 18:41:24,627 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)] === [2022-12-12 18:41:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1586531691, now seen corresponding path program 1 times [2022-12-12 18:41:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:24,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418692453] [2022-12-12 18:41:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:24,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:24,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418692453] [2022-12-12 18:41:24,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418692453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:24,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:24,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:41:24,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362585917] [2022-12-12 18:41:24,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:24,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:41:24,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:24,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:41:24,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:41:24,721 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:41:24,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 85 transitions, 984 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-12-12 18:41:24,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:24,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:41:24,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:24,899 INFO L130 PetriNetUnfolder]: 831/1444 cut-off events. [2022-12-12 18:41:24,899 INFO L131 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-12-12 18:41:24,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9478 conditions, 1444 events. 831/1444 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7478 event pairs, 27 based on Foata normal form. 36/1153 useless extension candidates. Maximal degree in co-relation 9452. Up to 1019 conditions per place. [2022-12-12 18:41:24,910 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 51 selfloop transitions, 8 changer transitions 50/114 dead transitions. [2022-12-12 18:41:24,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 114 transitions, 1551 flow [2022-12-12 18:41:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:41:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:41:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2022-12-12 18:41:24,913 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2022-12-12 18:41:24,915 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-12-12 18:41:24,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 114 transitions, 1551 flow [2022-12-12 18:41:24,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 64 transitions, 851 flow [2022-12-12 18:41:24,924 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 64 transitions, 851 flow [2022-12-12 18:41:24,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-12-12 18:41:24,924 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:24,924 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:24,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 18:41:24,924 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)] === [2022-12-12 18:41:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1649092791, now seen corresponding path program 2 times [2022-12-12 18:41:24,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:24,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609031930] [2022-12-12 18:41:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:24,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:25,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:25,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609031930] [2022-12-12 18:41:25,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609031930] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:25,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:25,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 18:41:25,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047565255] [2022-12-12 18:41:25,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:25,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:41:25,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:25,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:41:25,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:41:25,030 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:41:25,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 64 transitions, 851 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-12-12 18:41:25,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:25,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:41:25,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:25,160 INFO L130 PetriNetUnfolder]: 551/947 cut-off events. [2022-12-12 18:41:25,160 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-12-12 18:41:25,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7114 conditions, 947 events. 551/947 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4422 event pairs, 30 based on Foata normal form. 36/744 useless extension candidates. Maximal degree in co-relation 7085. Up to 763 conditions per place. [2022-12-12 18:41:25,165 INFO L137 encePairwiseOnDemand]: 22/27 looper letters, 31 selfloop transitions, 3 changer transitions 33/72 dead transitions. [2022-12-12 18:41:25,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 1097 flow [2022-12-12 18:41:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 18:41:25,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 18:41:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2022-12-12 18:41:25,166 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2022-12-12 18:41:25,167 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2022-12-12 18:41:25,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 72 transitions, 1097 flow [2022-12-12 18:41:25,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 39 transitions, 566 flow [2022-12-12 18:41:25,171 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 566 flow [2022-12-12 18:41:25,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-12-12 18:41:25,171 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:25,172 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:25,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 18:41:25,172 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)] === [2022-12-12 18:41:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1078447085, now seen corresponding path program 3 times [2022-12-12 18:41:25,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:25,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342827068] [2022-12-12 18:41:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:25,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:25,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:25,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342827068] [2022-12-12 18:41:25,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342827068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:25,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:25,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:41:25,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548543517] [2022-12-12 18:41:25,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:25,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:41:25,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:25,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:41:25,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:41:25,258 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:41:25,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 566 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2022-12-12 18:41:25,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:25,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:41:25,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:25,392 INFO L130 PetriNetUnfolder]: 637/1036 cut-off events. [2022-12-12 18:41:25,392 INFO L131 PetriNetUnfolder]: For 3112/3168 co-relation queries the response was YES. [2022-12-12 18:41:25,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7733 conditions, 1036 events. 637/1036 cut-off events. For 3112/3168 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4774 event pairs, 111 based on Foata normal form. 80/868 useless extension candidates. Maximal degree in co-relation 7701. Up to 759 conditions per place. [2022-12-12 18:41:25,399 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 32 selfloop transitions, 18 changer transitions 40/95 dead transitions. [2022-12-12 18:41:25,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 95 transitions, 1519 flow [2022-12-12 18:41:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:41:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:41:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2022-12-12 18:41:25,401 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6592592592592592 [2022-12-12 18:41:25,403 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2022-12-12 18:41:25,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 95 transitions, 1519 flow [2022-12-12 18:41:25,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 55 transitions, 883 flow [2022-12-12 18:41:25,409 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 883 flow [2022-12-12 18:41:25,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2022-12-12 18:41:25,409 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:25,409 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:25,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 18:41:25,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 18:41:25,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:25,410 INFO L85 PathProgramCache]: Analyzing trace with hash -918590037, now seen corresponding path program 1 times [2022-12-12 18:41:25,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:25,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124364235] [2022-12-12 18:41:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:25,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:25,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:25,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124364235] [2022-12-12 18:41:25,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124364235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:25,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:25,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:41:25,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023970717] [2022-12-12 18:41:25,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:25,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:41:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:25,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:41:25,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:41:25,536 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:41:25,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 883 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 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) [2022-12-12 18:41:25,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:25,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:41:25,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:25,688 INFO L130 PetriNetUnfolder]: 464/819 cut-off events. [2022-12-12 18:41:25,689 INFO L131 PetriNetUnfolder]: For 2712/2824 co-relation queries the response was YES. [2022-12-12 18:41:25,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6912 conditions, 819 events. 464/819 cut-off events. For 2712/2824 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4045 event pairs, 86 based on Foata normal form. 90/726 useless extension candidates. Maximal degree in co-relation 6877. Up to 750 conditions per place. [2022-12-12 18:41:25,695 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 27 selfloop transitions, 31 changer transitions 29/92 dead transitions. [2022-12-12 18:41:25,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 1597 flow [2022-12-12 18:41:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 18:41:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 18:41:25,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2022-12-12 18:41:25,696 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2022-12-12 18:41:25,697 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-12-12 18:41:25,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 92 transitions, 1597 flow [2022-12-12 18:41:25,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 63 transitions, 1101 flow [2022-12-12 18:41:25,702 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 63 transitions, 1101 flow [2022-12-12 18:41:25,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 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) [2022-12-12 18:41:25,702 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:25,702 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:25,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 18:41:25,703 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 18:41:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:25,703 INFO L85 PathProgramCache]: Analyzing trace with hash 194500304, now seen corresponding path program 1 times [2022-12-12 18:41:25,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:25,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830779765] [2022-12-12 18:41:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:25,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:25,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:25,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830779765] [2022-12-12 18:41:25,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830779765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:25,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:25,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 18:41:25,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483450702] [2022-12-12 18:41:25,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:25,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 18:41:25,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:25,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 18:41:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 18:41:25,796 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2022-12-12 18:41:25,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 63 transitions, 1101 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2022-12-12 18:41:25,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:25,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2022-12-12 18:41:25,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:25,920 INFO L130 PetriNetUnfolder]: 214/462 cut-off events. [2022-12-12 18:41:25,920 INFO L131 PetriNetUnfolder]: For 1638/1692 co-relation queries the response was YES. [2022-12-12 18:41:25,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4382 conditions, 462 events. 214/462 cut-off events. For 1638/1692 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2344 event pairs, 11 based on Foata normal form. 96/461 useless extension candidates. Maximal degree in co-relation 4344. Up to 417 conditions per place. [2022-12-12 18:41:25,923 INFO L137 encePairwiseOnDemand]: 15/27 looper letters, 17 selfloop transitions, 40 changer transitions 12/74 dead transitions. [2022-12-12 18:41:25,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 74 transitions, 1417 flow [2022-12-12 18:41:25,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 18:41:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 18:41:25,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2022-12-12 18:41:25,932 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2022-12-12 18:41:25,933 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2022-12-12 18:41:25,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 74 transitions, 1417 flow [2022-12-12 18:41:25,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 62 transitions, 1195 flow [2022-12-12 18:41:25,936 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 1195 flow [2022-12-12 18:41:25,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2022-12-12 18:41:25,937 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:41:25,937 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:25,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 18:41:25,937 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 18:41:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:41:25,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1027391659, now seen corresponding path program 1 times [2022-12-12 18:41:25,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:41:25,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851288986] [2022-12-12 18:41:25,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:41:25,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:41:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:41:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:41:26,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:41:26,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851288986] [2022-12-12 18:41:26,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851288986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:41:26,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:41:26,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:41:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789577284] [2022-12-12 18:41:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:41:26,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:41:26,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:41:26,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:41:26,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:41:26,026 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2022-12-12 18:41:26,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 1195 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-12 18:41:26,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:41:26,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2022-12-12 18:41:26,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:41:26,080 INFO L130 PetriNetUnfolder]: 140/286 cut-off events. [2022-12-12 18:41:26,080 INFO L131 PetriNetUnfolder]: For 1425/1473 co-relation queries the response was YES. [2022-12-12 18:41:26,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 286 events. 140/286 cut-off events. For 1425/1473 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1178 event pairs, 0 based on Foata normal form. 31/245 useless extension candidates. Maximal degree in co-relation 2855. Up to 253 conditions per place. [2022-12-12 18:41:26,081 INFO L137 encePairwiseOnDemand]: 24/27 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2022-12-12 18:41:26,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 1512 flow [2022-12-12 18:41:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:41:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:41:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2022-12-12 18:41:26,083 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2022-12-12 18:41:26,083 INFO L295 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2022-12-12 18:41:26,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 71 transitions, 1512 flow [2022-12-12 18:41:26,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 18:41:26,084 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 18:41:26,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-12-12 18:41:26,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 18:41:26,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 18:41:26,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 18:41:26,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 18:41:26,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 18:41:26,087 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:41:26,090 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 18:41:26,090 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 18:41:26,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 06:41:26 BasicIcfg [2022-12-12 18:41:26,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 18:41:26,094 INFO L158 Benchmark]: Toolchain (without parser) took 7247.59ms. Allocated memory was 183.5MB in the beginning and 235.9MB in the end (delta: 52.4MB). Free memory was 147.0MB in the beginning and 95.7MB in the end (delta: 51.3MB). Peak memory consumption was 104.8MB. Max. memory is 8.0GB. [2022-12-12 18:41:26,094 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 183.5MB. Free memory is still 160.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:41:26,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.01ms. Allocated memory is still 183.5MB. Free memory was 146.2MB in the beginning and 122.9MB in the end (delta: 23.3MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 18:41:26,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.40ms. Allocated memory is still 183.5MB. Free memory was 122.9MB in the beginning and 121.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 18:41:26,097 INFO L158 Benchmark]: Boogie Preprocessor took 33.15ms. Allocated memory is still 183.5MB. Free memory was 121.3MB in the beginning and 119.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 18:41:26,098 INFO L158 Benchmark]: RCFGBuilder took 440.78ms. Allocated memory is still 183.5MB. Free memory was 119.8MB in the beginning and 106.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 18:41:26,098 INFO L158 Benchmark]: TraceAbstraction took 6203.78ms. Allocated memory was 183.5MB in the beginning and 235.9MB in the end (delta: 52.4MB). Free memory was 105.1MB in the beginning and 95.7MB in the end (delta: 9.4MB). Peak memory consumption was 62.8MB. Max. memory is 8.0GB. [2022-12-12 18:41:26,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 183.5MB. Free memory is still 160.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 492.01ms. Allocated memory is still 183.5MB. Free memory was 146.2MB in the beginning and 122.9MB in the end (delta: 23.3MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.40ms. Allocated memory is still 183.5MB. Free memory was 122.9MB in the beginning and 121.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.15ms. Allocated memory is still 183.5MB. Free memory was 121.3MB in the beginning and 119.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 440.78ms. Allocated memory is still 183.5MB. Free memory was 119.8MB in the beginning and 106.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 6203.78ms. Allocated memory was 183.5MB in the beginning and 235.9MB in the end (delta: 52.4MB). Free memory was 105.1MB in the beginning and 95.7MB in the end (delta: 9.4MB). Peak memory consumption was 62.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 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: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 950, independent: 897, independent conditional: 897, independent unconditional: 0, dependent: 53, dependent conditional: 53, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 950, independent: 897, independent conditional: 0, independent unconditional: 897, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 950, independent: 897, independent conditional: 0, independent unconditional: 897, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 950, independent: 897, independent conditional: 0, independent unconditional: 897, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 749, independent: 711, independent conditional: 0, independent unconditional: 711, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 749, independent: 692, independent conditional: 0, independent unconditional: 692, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 131, independent: 45, independent conditional: 0, independent unconditional: 45, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 950, independent: 186, independent conditional: 0, independent unconditional: 186, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 749, unknown conditional: 0, unknown unconditional: 749] , Statistics on independence cache: Total cache size (in pairs): 1093, Positive cache size: 1055, Positive conditional cache size: 0, Positive unconditional cache size: 1055, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - 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: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 283 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 283 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 696 IncrementalHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 25 mSDtfsCounter, 696 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1195occurred in iteration=10, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 4409 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 557 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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! [2022-12-12 18:41:26,116 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...