/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 13:16:05,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:16:05,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:16:05,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:16:05,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:16:05,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:16:05,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:16:05,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:16:05,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:16:05,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:16:05,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:16:05,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:16:05,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:16:05,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:16:05,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:16:05,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:16:05,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:16:05,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:16:05,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:16:05,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:16:05,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:16:05,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:16:05,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:16:05,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:16:05,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:16:05,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:16:05,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:16:05,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:16:05,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:16:05,227 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:16:05,227 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:16:05,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:16:05,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:16:05,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:16:05,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:16:05,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:16:05,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:16:05,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:16:05,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:16:05,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:16:05,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:16:05,239 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-13 13:16:05,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:16:05,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:16:05,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:16:05,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:16:05,270 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:16:05,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:16:05,271 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:16:05,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:16:05,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:16:05,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:16:05,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:16:05,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:16:05,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:16:05,273 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:16:05,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:16:05,273 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:16:05,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:16:05,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:16:05,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:16:05,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 13:16:05,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:16:05,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:16:05,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:16:05,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:16:05,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:16:05,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:16:05,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:16:05,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 13:16:05,275 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 13:16:05,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:16:05,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:16:05,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:16:05,620 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:16:05,620 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:16:05,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2022-12-13 13:16:06,796 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:16:07,052 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:16:07,053 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2022-12-13 13:16:07,060 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c58299ec/82131e60ff9f482787fd8b399d5d593f/FLAG7d21c782b [2022-12-13 13:16:07,079 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c58299ec/82131e60ff9f482787fd8b399d5d593f [2022-12-13 13:16:07,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:16:07,083 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 13:16:07,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:16:07,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:16:07,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:16:07,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@653aa544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07, skipping insertion in model container [2022-12-13 13:16:07,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:16:07,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:16:07,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,255 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,256 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,259 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,265 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,266 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,282 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,289 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,295 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-12-13 13:16:07,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:16:07,308 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:16:07,318 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,321 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,323 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,327 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,328 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,329 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:16:07,333 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:16:07,350 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2022-12-13 13:16:07,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:16:07,369 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:16:07,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07 WrapperNode [2022-12-13 13:16:07,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:16:07,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:16:07,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:16:07,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:16:07,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,409 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 174 [2022-12-13 13:16:07,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:16:07,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:16:07,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:16:07,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:16:07,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,433 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:16:07,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:16:07,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:16:07,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:16:07,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (1/1) ... [2022-12-13 13:16:07,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:16:07,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 13:16:07,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:16:07,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:16:07,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:16:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:16:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:16:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:16:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 13:16:07,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 13:16:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 13:16:07,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 13:16:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 13:16:07,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 13:16:07,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 13:16:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 13:16:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:16:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-13 13:16:07,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-13 13:16:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 13:16:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 13:16:07,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:16:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:16:07,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:16:07,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:16:07,508 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 13:16:07,601 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 13:16:07,603 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:16:07,941 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 13:16:08,074 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:16:08,074 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 13:16:08,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:16:08 BoogieIcfgContainer [2022-12-13 13:16:08,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:16:08,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:16:08,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:16:08,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:16:08,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:16:07" (1/3) ... [2022-12-13 13:16:08,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c93b647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:16:08, skipping insertion in model container [2022-12-13 13:16:08,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:16:07" (2/3) ... [2022-12-13 13:16:08,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c93b647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:16:08, skipping insertion in model container [2022-12-13 13:16:08,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:16:08" (3/3) ... [2022-12-13 13:16:08,083 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2022-12-13 13:16:08,098 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:16:08,098 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:16:08,098 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:16:08,193 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-12-13 13:16:08,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 183 transitions, 406 flow [2022-12-13 13:16:08,322 INFO L130 PetriNetUnfolder]: 14/178 cut-off events. [2022-12-13 13:16:08,322 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 13:16:08,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 178 events. 14/178 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 131 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2022-12-13 13:16:08,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 183 transitions, 406 flow [2022-12-13 13:16:08,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 164 transitions, 358 flow [2022-12-13 13:16:08,339 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:16:08,364 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 164 transitions, 358 flow [2022-12-13 13:16:08,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 164 transitions, 358 flow [2022-12-13 13:16:08,432 INFO L130 PetriNetUnfolder]: 14/164 cut-off events. [2022-12-13 13:16:08,432 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 13:16:08,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 164 events. 14/164 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 130 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2022-12-13 13:16:08,442 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 164 transitions, 358 flow [2022-12-13 13:16:08,442 INFO L226 LiptonReduction]: Number of co-enabled transitions 3806 [2022-12-13 13:16:18,179 INFO L241 LiptonReduction]: Total number of compositions: 126 [2022-12-13 13:16:18,191 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:16:18,196 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=REPEATED_LIPTON_PN, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4af718f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 13:16:18,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 13:16:18,204 INFO L130 PetriNetUnfolder]: 5/37 cut-off events. [2022-12-13 13:16:18,204 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 13:16:18,204 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:16:18,205 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:18,205 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 3 more)] === [2022-12-13 13:16:18,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:18,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1329809375, now seen corresponding path program 1 times [2022-12-13 13:16:18,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:16:18,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915418611] [2022-12-13 13:16:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:18,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:16:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:16:18,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:16:18,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915418611] [2022-12-13 13:16:18,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915418611] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:16:18,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:16:18,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:16:18,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253737983] [2022-12-13 13:16:18,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:16:18,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:16:18,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:16:18,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:16:18,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:16:18,679 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 38 [2022-12-13 13:16:18,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:16:18,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:16:18,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 38 [2022-12-13 13:16:18,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:16:19,499 INFO L130 PetriNetUnfolder]: 6110/7594 cut-off events. [2022-12-13 13:16:19,499 INFO L131 PetriNetUnfolder]: For 287/287 co-relation queries the response was YES. [2022-12-13 13:16:19,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15782 conditions, 7594 events. 6110/7594 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 30199 event pairs, 2980 based on Foata normal form. 0/5304 useless extension candidates. Maximal degree in co-relation 13404. Up to 6012 conditions per place. [2022-12-13 13:16:19,552 INFO L137 encePairwiseOnDemand]: 34/38 looper letters, 52 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2022-12-13 13:16:19,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 266 flow [2022-12-13 13:16:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:16:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:16:19,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2022-12-13 13:16:19,570 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2022-12-13 13:16:19,571 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 106 flow. Second operand 4 states and 64 transitions. [2022-12-13 13:16:19,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 266 flow [2022-12-13 13:16:19,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 238 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-12-13 13:16:19,595 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 100 flow [2022-12-13 13:16:19,597 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2022-12-13 13:16:19,603 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2022-12-13 13:16:19,603 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 13:16:19,604 INFO L89 Accepts]: Start accepts. Operand has 43 places, 39 transitions, 100 flow [2022-12-13 13:16:19,607 INFO L95 Accepts]: Finished accepts. [2022-12-13 13:16:19,607 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:16:19,608 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 39 transitions, 100 flow [2022-12-13 13:16:19,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 39 transitions, 100 flow [2022-12-13 13:16:19,614 INFO L130 PetriNetUnfolder]: 5/39 cut-off events. [2022-12-13 13:16:19,615 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:16:19,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 39 events. 5/39 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 35. Up to 4 conditions per place. [2022-12-13 13:16:19,617 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 39 transitions, 100 flow [2022-12-13 13:16:19,617 INFO L226 LiptonReduction]: Number of co-enabled transitions 484 [2022-12-13 13:16:19,639 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 13:16:19,641 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 38 [2022-12-13 13:16:19,641 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 100 flow [2022-12-13 13:16:19,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:16:19,642 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:16:19,642 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:19,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:16:19,646 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 3 more)] === [2022-12-13 13:16:19,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:19,647 INFO L85 PathProgramCache]: Analyzing trace with hash 200545949, now seen corresponding path program 1 times [2022-12-13 13:16:19,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:16:19,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433696080] [2022-12-13 13:16:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:19,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:16:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:16:19,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:16:19,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433696080] [2022-12-13 13:16:19,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433696080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:16:19,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:16:19,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:16:19,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667986953] [2022-12-13 13:16:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:16:19,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:16:19,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:16:19,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:16:19,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:16:19,849 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 38 [2022-12-13 13:16:19,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 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) [2022-12-13 13:16:19,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:16:19,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 38 [2022-12-13 13:16:19,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:16:20,643 INFO L130 PetriNetUnfolder]: 7432/9228 cut-off events. [2022-12-13 13:16:20,644 INFO L131 PetriNetUnfolder]: For 1624/1624 co-relation queries the response was YES. [2022-12-13 13:16:20,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20378 conditions, 9228 events. 7432/9228 cut-off events. For 1624/1624 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 37524 event pairs, 3779 based on Foata normal form. 0/6511 useless extension candidates. Maximal degree in co-relation 6677. Up to 7480 conditions per place. [2022-12-13 13:16:20,693 INFO L137 encePairwiseOnDemand]: 34/38 looper letters, 54 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2022-12-13 13:16:20,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 268 flow [2022-12-13 13:16:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:16:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:16:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2022-12-13 13:16:20,694 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2022-12-13 13:16:20,695 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 100 flow. Second operand 4 states and 64 transitions. [2022-12-13 13:16:20,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 268 flow [2022-12-13 13:16:20,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 258 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 13:16:20,698 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 108 flow [2022-12-13 13:16:20,698 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2022-12-13 13:16:20,699 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2022-12-13 13:16:20,699 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 13:16:20,699 INFO L89 Accepts]: Start accepts. Operand has 45 places, 40 transitions, 108 flow [2022-12-13 13:16:20,700 INFO L95 Accepts]: Finished accepts. [2022-12-13 13:16:20,700 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:16:20,701 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 40 transitions, 108 flow [2022-12-13 13:16:20,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 40 transitions, 108 flow [2022-12-13 13:16:20,706 INFO L130 PetriNetUnfolder]: 5/40 cut-off events. [2022-12-13 13:16:20,706 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:16:20,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 40 events. 5/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place. [2022-12-13 13:16:20,707 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 40 transitions, 108 flow [2022-12-13 13:16:20,707 INFO L226 LiptonReduction]: Number of co-enabled transitions 526 [2022-12-13 13:16:20,719 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 13:16:20,720 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 21 [2022-12-13 13:16:20,720 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 108 flow [2022-12-13 13:16:20,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 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) [2022-12-13 13:16:20,720 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:16:20,720 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:20,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:16:20,721 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 3 more)] === [2022-12-13 13:16:20,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:20,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1636553750, now seen corresponding path program 1 times [2022-12-13 13:16:20,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:16:20,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764238821] [2022-12-13 13:16:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:20,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:16:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:16:20,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:16:20,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764238821] [2022-12-13 13:16:20,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764238821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:16:20,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:16:20,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:16:20,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035201419] [2022-12-13 13:16:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:16:20,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:16:20,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:16:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:16:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:16:20,815 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 38 [2022-12-13 13:16:20,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:16:20,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:16:20,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 38 [2022-12-13 13:16:20,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:16:21,728 INFO L130 PetriNetUnfolder]: 9317/11685 cut-off events. [2022-12-13 13:16:21,728 INFO L131 PetriNetUnfolder]: For 2916/2916 co-relation queries the response was YES. [2022-12-13 13:16:21,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27111 conditions, 11685 events. 9317/11685 cut-off events. For 2916/2916 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 47339 event pairs, 4111 based on Foata normal form. 0/8912 useless extension candidates. Maximal degree in co-relation 12566. Up to 8724 conditions per place. [2022-12-13 13:16:21,776 INFO L137 encePairwiseOnDemand]: 34/38 looper letters, 59 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2022-12-13 13:16:21,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 298 flow [2022-12-13 13:16:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:16:21,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:16:21,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2022-12-13 13:16:21,777 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2022-12-13 13:16:21,778 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 108 flow. Second operand 4 states and 63 transitions. [2022-12-13 13:16:21,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 298 flow [2022-12-13 13:16:21,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 288 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 13:16:21,781 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2022-12-13 13:16:21,781 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2022-12-13 13:16:21,782 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2022-12-13 13:16:21,782 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 13:16:21,782 INFO L89 Accepts]: Start accepts. Operand has 47 places, 41 transitions, 116 flow [2022-12-13 13:16:21,783 INFO L95 Accepts]: Finished accepts. [2022-12-13 13:16:21,783 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:16:21,783 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 41 transitions, 116 flow [2022-12-13 13:16:21,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 41 transitions, 116 flow [2022-12-13 13:16:21,788 INFO L130 PetriNetUnfolder]: 5/41 cut-off events. [2022-12-13 13:16:21,788 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:16:21,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 41 events. 5/41 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 44. Up to 4 conditions per place. [2022-12-13 13:16:21,789 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 41 transitions, 116 flow [2022-12-13 13:16:21,789 INFO L226 LiptonReduction]: Number of co-enabled transitions 572 [2022-12-13 13:16:21,891 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 13:16:21,893 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 111 [2022-12-13 13:16:21,893 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 112 flow [2022-12-13 13:16:21,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:16:21,893 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:16:21,893 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:21,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:16:21,893 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 3 more)] === [2022-12-13 13:16:21,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:21,894 INFO L85 PathProgramCache]: Analyzing trace with hash 662854048, now seen corresponding path program 1 times [2022-12-13 13:16:21,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:16:21,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709358302] [2022-12-13 13:16:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:21,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:16:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 13:16:22,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:16:22,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709358302] [2022-12-13 13:16:22,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709358302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:16:22,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:16:22,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:16:22,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002709236] [2022-12-13 13:16:22,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:16:22,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:16:22,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:16:22,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:16:22,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:16:22,016 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 38 [2022-12-13 13:16:22,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 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) [2022-12-13 13:16:22,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:16:22,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 38 [2022-12-13 13:16:22,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:16:22,976 INFO L130 PetriNetUnfolder]: 8748/11070 cut-off events. [2022-12-13 13:16:22,977 INFO L131 PetriNetUnfolder]: For 4629/4629 co-relation queries the response was YES. [2022-12-13 13:16:22,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28087 conditions, 11070 events. 8748/11070 cut-off events. For 4629/4629 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 41064 event pairs, 4945 based on Foata normal form. 0/8947 useless extension candidates. Maximal degree in co-relation 9637. Up to 8498 conditions per place. [2022-12-13 13:16:23,019 INFO L137 encePairwiseOnDemand]: 34/38 looper letters, 61 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2022-12-13 13:16:23,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 312 flow [2022-12-13 13:16:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:16:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:16:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2022-12-13 13:16:23,021 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2022-12-13 13:16:23,021 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 112 flow. Second operand 4 states and 61 transitions. [2022-12-13 13:16:23,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 312 flow [2022-12-13 13:16:23,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 294 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-13 13:16:23,032 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2022-12-13 13:16:23,032 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2022-12-13 13:16:23,033 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2022-12-13 13:16:23,033 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 13:16:23,033 INFO L89 Accepts]: Start accepts. Operand has 47 places, 41 transitions, 116 flow [2022-12-13 13:16:23,034 INFO L95 Accepts]: Finished accepts. [2022-12-13 13:16:23,034 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:16:23,034 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 41 transitions, 116 flow [2022-12-13 13:16:23,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 41 transitions, 116 flow [2022-12-13 13:16:23,039 INFO L130 PetriNetUnfolder]: 5/41 cut-off events. [2022-12-13 13:16:23,039 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:16:23,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 41 events. 5/41 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2022-12-13 13:16:23,040 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 41 transitions, 116 flow [2022-12-13 13:16:23,040 INFO L226 LiptonReduction]: Number of co-enabled transitions 572 [2022-12-13 13:16:23,045 ERROR L806 SequenceRule]: Run adaptation not supported for post-scripts [2022-12-13 13:16:23,046 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 13:16:23,049 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 16 [2022-12-13 13:16:23,049 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 111 flow [2022-12-13 13:16:23,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 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) [2022-12-13 13:16:23,049 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:16:23,049 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:16:23,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:16:23,049 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 3 more)] === [2022-12-13 13:16:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:16:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash -926088980, now seen corresponding path program 1 times [2022-12-13 13:16:23,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:16:23,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901055243] [2022-12-13 13:16:23,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:16:23,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:16:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:16:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:16:23,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:16:23,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901055243] [2022-12-13 13:16:23,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901055243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:16:23,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:16:23,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:16:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833684864] [2022-12-13 13:16:23,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:16:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:16:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:16:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:16:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:16:23,179 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 38 [2022-12-13 13:16:23,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:16:23,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:16:23,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 38 [2022-12-13 13:16:23,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:16:23,392 INFO L130 PetriNetUnfolder]: 2082/2896 cut-off events. [2022-12-13 13:16:23,392 INFO L131 PetriNetUnfolder]: For 600/976 co-relation queries the response was YES. [2022-12-13 13:16:23,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6802 conditions, 2896 events. 2082/2896 cut-off events. For 600/976 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 10646 event pairs, 1583 based on Foata normal form. 376/2773 useless extension candidates. Maximal degree in co-relation 6646. Up to 2821 conditions per place. [2022-12-13 13:16:23,399 INFO L137 encePairwiseOnDemand]: 35/38 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2022-12-13 13:16:23,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 163 flow [2022-12-13 13:16:23,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:16:23,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:16:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2022-12-13 13:16:23,400 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3157894736842105 [2022-12-13 13:16:23,400 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 111 flow. Second operand 3 states and 36 transitions. [2022-12-13 13:16:23,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 163 flow [2022-12-13 13:16:23,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 159 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 13:16:23,406 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2022-12-13 13:16:23,406 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2022-12-13 13:16:23,407 INFO L295 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2022-12-13 13:16:23,407 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 13:16:23,407 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 0 transitions, 0 flow [2022-12-13 13:16:23,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2022-12-13 13:16:23,408 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 13:16:23,408 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:16:23,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2022-12-13 13:16:23,408 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2022-12-13 13:16:23,408 INFO L226 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-13 13:16:23,408 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 13:16:23,409 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2 [2022-12-13 13:16:23,409 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-13 13:16:23,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:16:23,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-13 13:16:23,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2022-12-13 13:16:23,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-13 13:16:23,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-13 13:16:23,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-12-13 13:16:23,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2022-12-13 13:16:23,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:16:23,413 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 13:16:23,415 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:16:23,416 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:16:23,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:16:23 BasicIcfg [2022-12-13 13:16:23,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:16:23,419 INFO L158 Benchmark]: Toolchain (without parser) took 16336.05ms. Allocated memory was 186.6MB in the beginning and 748.7MB in the end (delta: 562.0MB). Free memory was 162.8MB in the beginning and 256.8MB in the end (delta: -94.0MB). Peak memory consumption was 467.4MB. Max. memory is 8.0GB. [2022-12-13 13:16:23,419 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory was 104.8MB in the beginning and 104.6MB in the end (delta: 131.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-13 13:16:23,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.06ms. Allocated memory is still 186.6MB. Free memory was 162.5MB in the beginning and 148.5MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-13 13:16:23,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.80ms. Allocated memory is still 186.6MB. Free memory was 148.5MB in the beginning and 146.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-13 13:16:23,419 INFO L158 Benchmark]: Boogie Preprocessor took 26.96ms. Allocated memory is still 186.6MB. Free memory was 146.1MB in the beginning and 144.3MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-13 13:16:23,420 INFO L158 Benchmark]: RCFGBuilder took 638.55ms. Allocated memory is still 186.6MB. Free memory was 144.3MB in the beginning and 155.2MB in the end (delta: -10.9MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. [2022-12-13 13:16:23,420 INFO L158 Benchmark]: TraceAbstraction took 15340.04ms. Allocated memory was 186.6MB in the beginning and 748.7MB in the end (delta: 562.0MB). Free memory was 154.2MB in the beginning and 256.8MB in the end (delta: -102.6MB). Peak memory consumption was 458.9MB. Max. memory is 8.0GB. [2022-12-13 13:16:23,421 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory was 104.8MB in the beginning and 104.6MB in the end (delta: 131.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 285.06ms. Allocated memory is still 186.6MB. Free memory was 162.5MB in the beginning and 148.5MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.80ms. Allocated memory is still 186.6MB. Free memory was 148.5MB in the beginning and 146.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.96ms. Allocated memory is still 186.6MB. Free memory was 146.1MB in the beginning and 144.3MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 638.55ms. Allocated memory is still 186.6MB. Free memory was 144.3MB in the beginning and 155.2MB in the end (delta: -10.9MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. * TraceAbstraction took 15340.04ms. Allocated memory was 186.6MB in the beginning and 748.7MB in the end (delta: 562.0MB). Free memory was 154.2MB in the beginning and 256.8MB in the end (delta: -102.6MB). Peak memory consumption was 458.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.7s, 166 PlacesBefore, 49 PlacesAfterwards, 164 TransitionsBefore, 38 TransitionsAfterwards, 3806 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 67 TrivialYvCompositions, 50 ConcurrentYvCompositions, 9 ChoiceCompositions, 126 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2032, independent: 2009, independent conditional: 2009, independent unconditional: 0, dependent: 23, dependent conditional: 23, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2032, independent: 2009, independent conditional: 0, independent unconditional: 2009, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2032, independent: 2009, independent conditional: 0, independent unconditional: 2009, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2032, independent: 2009, independent conditional: 0, independent unconditional: 2009, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1969, independent: 1953, independent conditional: 0, independent unconditional: 1953, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1969, independent: 1953, independent conditional: 0, independent unconditional: 1953, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 80, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2032, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 1969, unknown conditional: 0, unknown unconditional: 1969] , Statistics on independence cache: Total cache size (in pairs): 3077, Positive cache size: 3061, Positive conditional cache size: 0, Positive unconditional cache size: 3061, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 43 PlacesBefore, 43 PlacesAfterwards, 39 TransitionsBefore, 39 TransitionsAfterwards, 484 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 87, independent: 79, independent conditional: 79, independent unconditional: 0, dependent: 8, dependent conditional: 8, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 87, independent: 79, independent conditional: 58, independent unconditional: 21, dependent: 8, dependent conditional: 5, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 87, independent: 79, independent conditional: 27, independent unconditional: 52, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 87, independent: 79, independent conditional: 27, independent unconditional: 52, dependent: 8, dependent conditional: 2, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 67, independent: 60, independent conditional: 20, independent unconditional: 40, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 67, independent: 60, independent conditional: 0, independent unconditional: 60, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 7, dependent conditional: 2, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 11, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 87, independent: 19, independent conditional: 7, independent unconditional: 12, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 67, unknown conditional: 22, unknown unconditional: 45] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 60, Positive conditional cache size: 20, Positive unconditional cache size: 40, Negative cache size: 7, Negative conditional cache size: 2, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 34, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 45 PlacesBefore, 45 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 526 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 109, independent: 99, independent conditional: 99, independent unconditional: 0, dependent: 10, dependent conditional: 10, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 109, independent: 99, independent conditional: 67, independent unconditional: 32, dependent: 10, dependent conditional: 6, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 109, independent: 99, independent conditional: 28, independent unconditional: 71, dependent: 10, dependent conditional: 3, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 109, independent: 99, independent conditional: 28, independent unconditional: 71, dependent: 10, dependent conditional: 3, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 34, independent: 31, independent conditional: 8, independent unconditional: 23, dependent: 3, dependent conditional: 2, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 34, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 2, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 8, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 109, independent: 68, independent conditional: 20, independent unconditional: 48, dependent: 7, dependent conditional: 1, dependent unconditional: 6, unknown: 34, unknown conditional: 10, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 91, Positive conditional cache size: 28, Positive unconditional cache size: 63, Negative cache size: 10, Negative conditional cache size: 4, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 42, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 47 PlacesBefore, 46 PlacesAfterwards, 41 TransitionsBefore, 40 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 203, independent: 187, independent conditional: 187, independent unconditional: 0, dependent: 16, dependent conditional: 16, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 203, independent: 187, independent conditional: 49, independent unconditional: 138, dependent: 16, dependent conditional: 6, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 205, independent: 187, independent conditional: 34, independent unconditional: 153, dependent: 18, dependent conditional: 8, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 205, independent: 187, independent conditional: 34, independent unconditional: 153, dependent: 18, dependent conditional: 8, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 33, independent: 30, independent conditional: 8, independent unconditional: 22, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 33, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 14, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 14, dependent conditional: 14, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 205, independent: 157, independent conditional: 26, independent unconditional: 131, dependent: 15, dependent conditional: 5, dependent unconditional: 10, unknown: 33, unknown conditional: 11, unknown unconditional: 22] , Statistics on independence cache: Total cache size (in pairs): 137, Positive cache size: 124, Positive conditional cache size: 36, Positive unconditional cache size: 88, Negative cache size: 13, Negative conditional cache size: 7, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 15, Maximal queried relation: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 47 PlacesBefore, 47 PlacesAfterwards, 41 TransitionsBefore, 40 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 206, independent: 189, independent conditional: 189, independent unconditional: 0, dependent: 17, dependent conditional: 17, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 206, independent: 189, independent conditional: 51, independent unconditional: 138, dependent: 17, dependent conditional: 5, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 206, independent: 189, independent conditional: 29, independent unconditional: 160, dependent: 17, dependent conditional: 5, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 206, independent: 189, independent conditional: 29, independent unconditional: 160, dependent: 17, dependent conditional: 5, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 21, independent: 20, independent conditional: 7, independent unconditional: 13, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 21, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 206, independent: 169, independent conditional: 22, independent unconditional: 147, dependent: 16, dependent conditional: 4, dependent unconditional: 12, unknown: 21, unknown conditional: 8, unknown unconditional: 13] , Statistics on independence cache: Total cache size (in pairs): 158, Positive cache size: 144, Positive conditional cache size: 43, Positive unconditional cache size: 101, Negative cache size: 14, Negative conditional cache size: 8, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 22, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 0 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 158, Positive cache size: 144, Positive conditional cache size: 43, Positive unconditional cache size: 101, Negative cache size: 14, Negative conditional cache size: 8, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 134]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 219 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 182 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 424 IncrementalHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 2 mSDtfsCounter, 424 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=3, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 294 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 13:16:23,446 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...