/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 11:59:20,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 11:59:20,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 11:59:20,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 11:59:20,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 11:59:20,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 11:59:20,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 11:59:20,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 11:59:20,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 11:59:20,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 11:59:20,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 11:59:20,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 11:59:20,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 11:59:20,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 11:59:20,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 11:59:20,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 11:59:20,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 11:59:20,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 11:59:20,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 11:59:20,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 11:59:20,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 11:59:20,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 11:59:20,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 11:59:20,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 11:59:20,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 11:59:20,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 11:59:20,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 11:59:20,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 11:59:20,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 11:59:20,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 11:59:20,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 11:59:20,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 11:59:20,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 11:59:20,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 11:59:20,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 11:59:20,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 11:59:20,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 11:59:20,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 11:59:20,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 11:59:20,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 11:59:20,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 11:59:20,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 11:59:20,249 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 11:59:20,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 11:59:20,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 11:59:20,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 11:59:20,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 11:59:20,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 11:59:20,252 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 11:59:20,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 11:59:20,252 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 11:59:20,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 11:59:20,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 11:59:20,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 11:59:20,254 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 11:59:20,254 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 11:59:20,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 11:59:20,254 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 11:59:20,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 11:59:20,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 11:59:20,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 11:59:20,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 11:59:20,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 11:59:20,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 11:59:20,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 11:59:20,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 11:59:20,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 11:59:20,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 11:59:20,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 11:59:20,256 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 11:59:20,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 11:59:20,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 11:59:20,256 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 11:59:20,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 11:59:20,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 11:59:20,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 11:59:20,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 11:59:20,595 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 11:59:20,595 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 11:59:20,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.i [2022-12-12 11:59:21,693 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 11:59:21,965 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 11:59:21,965 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.i [2022-12-12 11:59:21,986 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c4a0163/4090b4e386a94d28a259057768e134e9/FLAG6dd1b5ee8 [2022-12-12 11:59:21,997 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c4a0163/4090b4e386a94d28a259057768e134e9 [2022-12-12 11:59:21,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 11:59:22,000 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 11:59:22,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 11:59:22,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 11:59:22,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 11:59:22,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:59:21" (1/1) ... [2022-12-12 11:59:22,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380fdff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22, skipping insertion in model container [2022-12-12 11:59:22,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:59:21" (1/1) ... [2022-12-12 11:59:22,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 11:59:22,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 11:59:22,181 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.i[945,958] [2022-12-12 11:59:22,344 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,344 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,345 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,347 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,348 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,351 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,360 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,361 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,363 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 11:59:22,374 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 11:59:22,388 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.i[945,958] [2022-12-12 11:59:22,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,416 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:59:22,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:59:22,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 11:59:22,463 INFO L208 MainTranslator]: Completed translation [2022-12-12 11:59:22,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22 WrapperNode [2022-12-12 11:59:22,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 11:59:22,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 11:59:22,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 11:59:22,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 11:59:22,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,519 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-12 11:59:22,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 11:59:22,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 11:59:22,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 11:59:22,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 11:59:22,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 11:59:22,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 11:59:22,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 11:59:22,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 11:59:22,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (1/1) ... [2022-12-12 11:59:22,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 11:59:22,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:59:22,597 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 11:59:22,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 11:59:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 11:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 11:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 11:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 11:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 11:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 11:59:22,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 11:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 11:59:22,640 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 11:59:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 11:59:22,641 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 11:59:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 11:59:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 11:59:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 11:59:22,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 11:59:22,643 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 11:59:22,830 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 11:59:22,832 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 11:59:23,039 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 11:59:23,045 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 11:59:23,046 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 11:59:23,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:59:23 BoogieIcfgContainer [2022-12-12 11:59:23,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 11:59:23,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 11:59:23,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 11:59:23,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 11:59:23,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 11:59:21" (1/3) ... [2022-12-12 11:59:23,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ca83c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:59:23, skipping insertion in model container [2022-12-12 11:59:23,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:59:22" (2/3) ... [2022-12-12 11:59:23,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ca83c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:59:23, skipping insertion in model container [2022-12-12 11:59:23,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:59:23" (3/3) ... [2022-12-12 11:59:23,058 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_tso.i [2022-12-12 11:59:23,079 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 11:59:23,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 11:59:23,079 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 11:59:23,166 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 11:59:23,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 11:59:23,266 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-12 11:59:23,267 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 11:59:23,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-12 11:59:23,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 11:59:23,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-12 11:59:23,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 11:59:23,298 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1890e3ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 11:59:23,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 11:59:23,328 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2022-12-12 11:59:23,328 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 11:59:23,328 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:59:23,329 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:59:23,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 11:59:23,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:59:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2225101, now seen corresponding path program 1 times [2022-12-12 11:59:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:59:23,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863009813] [2022-12-12 11:59:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:59:23,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:59:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:59:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:59:24,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:59:24,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863009813] [2022-12-12 11:59:24,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863009813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:59:24,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:59:24,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 11:59:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861654862] [2022-12-12 11:59:24,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:59:24,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 11:59:24,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:59:24,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 11:59:24,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 11:59:24,084 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-12 11:59:24,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:24,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:59:24,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-12 11:59:24,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:59:24,487 INFO L130 PetriNetUnfolder]: 330/811 cut-off events. [2022-12-12 11:59:24,488 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-12 11:59:24,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 811 events. 330/811 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4481 event pairs, 4 based on Foata normal form. 34/819 useless extension candidates. Maximal degree in co-relation 1365. Up to 176 conditions per place. [2022-12-12 11:59:24,507 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 25 selfloop transitions, 6 changer transitions 47/129 dead transitions. [2022-12-12 11:59:24,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 129 transitions, 429 flow [2022-12-12 11:59:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 11:59:24,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 11:59:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 903 transitions. [2022-12-12 11:59:24,539 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8171945701357466 [2022-12-12 11:59:24,543 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-12-12 11:59:24,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 129 transitions, 429 flow [2022-12-12 11:59:24,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 414 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-12 11:59:24,551 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 129 transitions, 414 flow [2022-12-12 11:59:24,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 64.85714285714286) internal successors, (454), 7 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:24,551 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:59:24,552 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:59:24,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 11:59:24,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 11:59:24,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:59:24,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1045840660, now seen corresponding path program 1 times [2022-12-12 11:59:24,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:59:24,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916333545] [2022-12-12 11:59:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:59:24,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:59:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:59:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:59:24,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:59:24,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916333545] [2022-12-12 11:59:24,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916333545] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:59:24,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:59:24,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 11:59:24,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992239840] [2022-12-12 11:59:24,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:59:24,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 11:59:24,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:59:24,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 11:59:24,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 11:59:24,925 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 85 [2022-12-12 11:59:24,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 129 transitions, 414 flow. Second operand has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:24,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:59:24,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 85 [2022-12-12 11:59:24,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:59:25,581 INFO L130 PetriNetUnfolder]: 1013/2293 cut-off events. [2022-12-12 11:59:25,581 INFO L131 PetriNetUnfolder]: For 226/1025 co-relation queries the response was YES. [2022-12-12 11:59:25,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 2293 events. 1013/2293 cut-off events. For 226/1025 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16793 event pairs, 0 based on Foata normal form. 48/2301 useless extension candidates. Maximal degree in co-relation 5325. Up to 433 conditions per place. [2022-12-12 11:59:25,601 INFO L137 encePairwiseOnDemand]: 73/85 looper letters, 47 selfloop transitions, 18 changer transitions 326/440 dead transitions. [2022-12-12 11:59:25,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 440 transitions, 2442 flow [2022-12-12 11:59:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 11:59:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 11:59:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1163 transitions. [2022-12-12 11:59:25,611 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8048442906574395 [2022-12-12 11:59:25,614 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2022-12-12 11:59:25,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 440 transitions, 2442 flow [2022-12-12 11:59:25,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 440 transitions, 2432 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-12-12 11:59:25,627 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 440 transitions, 2432 flow [2022-12-12 11:59:25,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:25,628 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:59:25,628 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:59:25,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 11:59:25,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 11:59:25,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:59:25,629 INFO L85 PathProgramCache]: Analyzing trace with hash 584572715, now seen corresponding path program 1 times [2022-12-12 11:59:25,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:59:25,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534643957] [2022-12-12 11:59:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:59:25,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:59:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:59:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:59:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:59:25,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534643957] [2022-12-12 11:59:25,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534643957] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:59:25,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:59:25,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 11:59:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691359265] [2022-12-12 11:59:25,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:59:25,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 11:59:25,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:59:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 11:59:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 11:59:25,851 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 85 [2022-12-12 11:59:25,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 440 transitions, 2432 flow. Second operand has 6 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:25,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:59:25,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 85 [2022-12-12 11:59:25,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:59:26,225 INFO L130 PetriNetUnfolder]: 1095/2535 cut-off events. [2022-12-12 11:59:26,225 INFO L131 PetriNetUnfolder]: For 1297/2947 co-relation queries the response was YES. [2022-12-12 11:59:26,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6738 conditions, 2535 events. 1095/2535 cut-off events. For 1297/2947 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 19626 event pairs, 1 based on Foata normal form. 27/2529 useless extension candidates. Maximal degree in co-relation 6704. Up to 426 conditions per place. [2022-12-12 11:59:26,237 INFO L137 encePairwiseOnDemand]: 79/85 looper letters, 28 selfloop transitions, 7 changer transitions 507/612 dead transitions. [2022-12-12 11:59:26,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 612 transitions, 4210 flow [2022-12-12 11:59:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 11:59:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 11:59:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 653 transitions. [2022-12-12 11:59:26,240 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.85359477124183 [2022-12-12 11:59:26,243 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 33 predicate places. [2022-12-12 11:59:26,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 612 transitions, 4210 flow [2022-12-12 11:59:26,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 612 transitions, 4182 flow, removed 14 selfloop flow, removed 0 redundant places. [2022-12-12 11:59:26,254 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 612 transitions, 4182 flow [2022-12-12 11:59:26,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.66666666666667) internal successors, (430), 6 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:26,254 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:59:26,255 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:59:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 11:59:26,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 11:59:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:59:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1382101604, now seen corresponding path program 1 times [2022-12-12 11:59:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:59:26,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127272187] [2022-12-12 11:59:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:59:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:59:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:59:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:59:26,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:59:26,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127272187] [2022-12-12 11:59:26,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127272187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:59:26,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:59:26,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 11:59:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562748835] [2022-12-12 11:59:26,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:59:26,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 11:59:26,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:59:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 11:59:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-12 11:59:26,471 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-12 11:59:26,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 612 transitions, 4182 flow. Second operand has 8 states, 8 states have (on average 65.125) internal successors, (521), 8 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:26,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:59:26,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-12 11:59:26,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:59:27,155 INFO L130 PetriNetUnfolder]: 1469/3628 cut-off events. [2022-12-12 11:59:27,156 INFO L131 PetriNetUnfolder]: For 2137/16831 co-relation queries the response was YES. [2022-12-12 11:59:27,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11668 conditions, 3628 events. 1469/3628 cut-off events. For 2137/16831 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 32493 event pairs, 5 based on Foata normal form. 90/3690 useless extension candidates. Maximal degree in co-relation 11629. Up to 633 conditions per place. [2022-12-12 11:59:27,170 INFO L137 encePairwiseOnDemand]: 73/85 looper letters, 29 selfloop transitions, 11 changer transitions 1003/1095 dead transitions. [2022-12-12 11:59:27,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 1095 transitions, 9848 flow [2022-12-12 11:59:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 11:59:27,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 11:59:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1170 transitions. [2022-12-12 11:59:27,179 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8096885813148789 [2022-12-12 11:59:27,180 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 49 predicate places. [2022-12-12 11:59:27,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 1095 transitions, 9848 flow [2022-12-12 11:59:27,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 1095 transitions, 9648 flow, removed 100 selfloop flow, removed 0 redundant places. [2022-12-12 11:59:27,200 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 1095 transitions, 9648 flow [2022-12-12 11:59:27,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.125) internal successors, (521), 8 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:27,201 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:59:27,201 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:59:27,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 11:59:27,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 11:59:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:59:27,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1938217976, now seen corresponding path program 1 times [2022-12-12 11:59:27,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:59:27,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347982051] [2022-12-12 11:59:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:59:27,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:59:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:59:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:59:27,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:59:27,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347982051] [2022-12-12 11:59:27,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347982051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:59:27,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:59:27,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 11:59:27,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630381912] [2022-12-12 11:59:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:59:27,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 11:59:27,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:59:27,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 11:59:27,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-12 11:59:27,397 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-12 11:59:27,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 1095 transitions, 9648 flow. Second operand has 8 states, 8 states have (on average 65.125) internal successors, (521), 8 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:27,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:59:27,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-12 11:59:27,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:59:28,401 INFO L130 PetriNetUnfolder]: 1585/4491 cut-off events. [2022-12-12 11:59:28,401 INFO L131 PetriNetUnfolder]: For 5051/34556 co-relation queries the response was YES. [2022-12-12 11:59:28,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15799 conditions, 4491 events. 1585/4491 cut-off events. For 5051/34556 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 45784 event pairs, 0 based on Foata normal form. 393/4867 useless extension candidates. Maximal degree in co-relation 15756. Up to 745 conditions per place. [2022-12-12 11:59:28,423 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 21 selfloop transitions, 4 changer transitions 1366/1441 dead transitions. [2022-12-12 11:59:28,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 1441 transitions, 15666 flow [2022-12-12 11:59:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-12 11:59:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-12 11:59:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1703 transitions. [2022-12-12 11:59:28,428 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8014117647058824 [2022-12-12 11:59:28,428 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 73 predicate places. [2022-12-12 11:59:28,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 1441 transitions, 15666 flow [2022-12-12 11:59:28,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1441 transitions, 15484 flow, removed 91 selfloop flow, removed 0 redundant places. [2022-12-12 11:59:28,463 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 1441 transitions, 15484 flow [2022-12-12 11:59:28,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.125) internal successors, (521), 8 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:28,464 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:59:28,464 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:59:28,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 11:59:28,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 11:59:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:59:28,465 INFO L85 PathProgramCache]: Analyzing trace with hash 231336180, now seen corresponding path program 1 times [2022-12-12 11:59:28,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:59:28,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865523363] [2022-12-12 11:59:28,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:59:28,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:59:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:59:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 11:59:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:59:28,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865523363] [2022-12-12 11:59:28,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865523363] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:59:28,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:59:28,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 11:59:28,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846623412] [2022-12-12 11:59:28,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:59:28,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 11:59:28,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:59:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 11:59:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 11:59:28,616 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 85 [2022-12-12 11:59:28,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 1441 transitions, 15484 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:28,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:59:28,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 85 [2022-12-12 11:59:28,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:59:29,461 INFO L130 PetriNetUnfolder]: 1701/5005 cut-off events. [2022-12-12 11:59:29,462 INFO L131 PetriNetUnfolder]: For 9806/40749 co-relation queries the response was YES. [2022-12-12 11:59:29,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19725 conditions, 5005 events. 1701/5005 cut-off events. For 9806/40749 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 53038 event pairs, 0 based on Foata normal form. 241/5227 useless extension candidates. Maximal degree in co-relation 19682. Up to 840 conditions per place. [2022-12-12 11:59:29,492 INFO L137 encePairwiseOnDemand]: 77/85 looper letters, 0 selfloop transitions, 0 changer transitions 1617/1617 dead transitions. [2022-12-12 11:59:29,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 1617 transitions, 19534 flow [2022-12-12 11:59:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 11:59:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 11:59:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 922 transitions. [2022-12-12 11:59:29,496 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8343891402714932 [2022-12-12 11:59:29,497 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 83 predicate places. [2022-12-12 11:59:29,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 1617 transitions, 19534 flow [2022-12-12 11:59:29,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 1617 transitions, 19142 flow, removed 24 selfloop flow, removed 1 redundant places. [2022-12-12 11:59:29,552 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 1617 transitions, 19142 flow [2022-12-12 11:59:29,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 11:59:29,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 11:59:29,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 11:59:29,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 11:59:29,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 11:59:29,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 11:59:29,556 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-12 11:59:29,559 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 11:59:29,559 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 11:59:29,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 11:59:29 BasicIcfg [2022-12-12 11:59:29,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 11:59:29,564 INFO L158 Benchmark]: Toolchain (without parser) took 7564.31ms. Allocated memory was 180.4MB in the beginning and 307.2MB in the end (delta: 126.9MB). Free memory was 145.8MB in the beginning and 85.1MB in the end (delta: 60.8MB). Peak memory consumption was 188.7MB. Max. memory is 8.0GB. [2022-12-12 11:59:29,565 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 11:59:29,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.65ms. Allocated memory is still 180.4MB. Free memory was 145.8MB in the beginning and 122.2MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 11:59:29,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.63ms. Allocated memory is still 180.4MB. Free memory was 122.2MB in the beginning and 120.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 11:59:29,566 INFO L158 Benchmark]: Boogie Preprocessor took 32.73ms. Allocated memory is still 180.4MB. Free memory was 120.6MB in the beginning and 119.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 11:59:29,566 INFO L158 Benchmark]: RCFGBuilder took 493.20ms. Allocated memory is still 180.4MB. Free memory was 119.1MB in the beginning and 104.7MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 11:59:29,567 INFO L158 Benchmark]: TraceAbstraction took 6513.63ms. Allocated memory was 180.4MB in the beginning and 307.2MB in the end (delta: 126.9MB). Free memory was 103.9MB in the beginning and 85.1MB in the end (delta: 18.8MB). Peak memory consumption was 146.8MB. Max. memory is 8.0GB. [2022-12-12 11:59:29,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 462.65ms. Allocated memory is still 180.4MB. Free memory was 145.8MB in the beginning and 122.2MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.63ms. Allocated memory is still 180.4MB. Free memory was 122.2MB in the beginning and 120.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.73ms. Allocated memory is still 180.4MB. Free memory was 120.6MB in the beginning and 119.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 493.20ms. Allocated memory is still 180.4MB. Free memory was 119.1MB in the beginning and 104.7MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 6513.63ms. Allocated memory was 180.4MB in the beginning and 307.2MB in the end (delta: 126.9MB). Free memory was 103.9MB in the beginning and 85.1MB in the end (delta: 18.8MB). Peak memory consumption was 146.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.1s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 417 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 417 mSDsluCounter, 565 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 418 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 562 IncrementalHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 147 mSDtfsCounter, 562 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19142occurred in iteration=6, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 827 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 329 NumberOfCodeBlocks, 329 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 1625 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 11:59:29,586 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...