/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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 11:58:50,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 11:58:50,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 11:58:50,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 11:58:50,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 11:58:50,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 11:58:50,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 11:58:50,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 11:58:50,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 11:58:50,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 11:58:50,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 11:58:50,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 11:58:50,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 11:58:50,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 11:58:50,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 11:58:50,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 11:58:50,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 11:58:50,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 11:58:50,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 11:58:50,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 11:58:50,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 11:58:50,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 11:58:50,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 11:58:50,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 11:58:50,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 11:58:50,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 11:58:50,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 11:58:50,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 11:58:50,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 11:58:50,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 11:58:50,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 11:58:50,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 11:58:50,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 11:58:50,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 11:58:50,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 11:58:50,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 11:58:50,356 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 11:58:50,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 11:58:50,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 11:58:50,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 11:58:50,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 11:58:50,371 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 11:58:50,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 11:58:50,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 11:58:50,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 11:58:50,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 11:58:50,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 11:58:50,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 11:58:50,388 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 11:58:50,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 11:58:50,388 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 11:58:50,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 11:58:50,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 11:58:50,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 11:58:50,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 11:58:50,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 11:58:50,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 11:58:50,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 11:58:50,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 11:58:50,389 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 11:58:50,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 11:58:50,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 11:58:50,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 11:58:50,389 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 11:58:50,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 11:58:50,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 11:58:50,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 11:58:50,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 11:58:50,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 11:58:50,390 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 11:58:50,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 11:58:50,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 11:58:50,390 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 11:58:50,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 11:58:50,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 11:58:50,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 11:58:50,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 11:58:50,637 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 11:58:50,637 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 11:58:50,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 11:58:51,577 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 11:58:51,856 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 11:58:51,856 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 11:58:51,869 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4250889a8/47483ae45ae04b7a83fda199f439a9b6/FLAG5d6b032fa [2022-12-12 11:58:51,887 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4250889a8/47483ae45ae04b7a83fda199f439a9b6 [2022-12-12 11:58:51,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 11:58:51,890 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 11:58:51,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 11:58:51,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 11:58:51,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 11:58:51,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:58:51" (1/1) ... [2022-12-12 11:58:51,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6742b50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:51, skipping insertion in model container [2022-12-12 11:58:51,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:58:51" (1/1) ... [2022-12-12 11:58:51,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 11:58:51,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 11:58:52,015 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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 11:58:52,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,148 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 11:58:52,172 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 11:58:52,184 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/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-12 11:58:52,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,217 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 11:58:52,224 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 11:58:52,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 11:58:52,258 INFO L208 MainTranslator]: Completed translation [2022-12-12 11:58:52,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52 WrapperNode [2022-12-12 11:58:52,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 11:58:52,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 11:58:52,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 11:58:52,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 11:58:52,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,304 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-12 11:58:52,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 11:58:52,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 11:58:52,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 11:58:52,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 11:58:52,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,337 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 11:58:52,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 11:58:52,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 11:58:52,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 11:58:52,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (1/1) ... [2022-12-12 11:58:52,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 11:58:52,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 11:58:52,379 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 11:58:52,411 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 11:58:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 11:58:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 11:58:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 11:58:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 11:58:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 11:58:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-12 11:58:52,450 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-12 11:58:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-12 11:58:52,450 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-12 11:58:52,450 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-12 11:58:52,450 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-12 11:58:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 11:58:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 11:58:52,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 11:58:52,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 11:58:52,452 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 11:58:52,571 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 11:58:52,572 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 11:58:52,743 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 11:58:52,749 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 11:58:52,749 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 11:58:52,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:58:52 BoogieIcfgContainer [2022-12-12 11:58:52,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 11:58:52,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 11:58:52,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 11:58:52,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 11:58:52,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 11:58:51" (1/3) ... [2022-12-12 11:58:52,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b6a0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:58:52, skipping insertion in model container [2022-12-12 11:58:52,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:58:52" (2/3) ... [2022-12-12 11:58:52,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b6a0c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:58:52, skipping insertion in model container [2022-12-12 11:58:52,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:58:52" (3/3) ... [2022-12-12 11:58:52,757 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-12 11:58:52,772 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 11:58:52,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 11:58:52,773 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 11:58:52,828 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 11:58:52,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 11:58:52,892 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-12-12 11:58:52,893 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 11:58:52,896 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 11:58:52,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2022-12-12 11:58:52,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2022-12-12 11:58:52,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 11:58:52,908 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;@622d69cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 11:58:52,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 11:58:52,926 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2022-12-12 11:58:52,926 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 11:58:52,926 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:58:52,927 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 11:58:52,927 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 11:58:52,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:58:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash 2225101, now seen corresponding path program 1 times [2022-12-12 11:58:52,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:58:52,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146889301] [2022-12-12 11:58:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:58:52,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:58:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:58:53,626 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 11:58:53,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:58:53,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146889301] [2022-12-12 11:58:53,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146889301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:58:53,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:58:53,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 11:58:53,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952498312] [2022-12-12 11:58:53,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:58:53,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 11:58:53,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:58:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 11:58:53,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 11:58:53,664 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-12 11:58:53,670 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 11:58:53,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:58:53,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-12 11:58:53,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:58:53,953 INFO L130 PetriNetUnfolder]: 257/689 cut-off events. [2022-12-12 11:58:53,954 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-12 11:58:53,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 689 events. 257/689 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3841 event pairs, 38 based on Foata normal form. 28/693 useless extension candidates. Maximal degree in co-relation 1135. Up to 124 conditions per place. [2022-12-12 11:58:53,960 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 27 selfloop transitions, 6 changer transitions 50/134 dead transitions. [2022-12-12 11:58:53,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 134 transitions, 452 flow [2022-12-12 11:58:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 11:58:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 11:58:53,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 908 transitions. [2022-12-12 11:58:53,973 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8217194570135746 [2022-12-12 11:58:53,976 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 12 predicate places. [2022-12-12 11:58:53,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 134 transitions, 452 flow [2022-12-12 11:58:53,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 134 transitions, 436 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-12 11:58:53,983 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 134 transitions, 436 flow [2022-12-12 11:58:53,983 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 11:58:53,983 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:58:53,983 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 11:58:53,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 11:58:53,984 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 11:58:53,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:58:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash -167567346, now seen corresponding path program 1 times [2022-12-12 11:58:53,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:58:53,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925858263] [2022-12-12 11:58:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:58:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:58:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:58:54,224 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 11:58:54,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:58:54,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925858263] [2022-12-12 11:58:54,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925858263] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:58:54,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:58:54,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 11:58:54,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973084097] [2022-12-12 11:58:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:58:54,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 11:58:54,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:58:54,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 11:58:54,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 11:58:54,228 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-12 11:58:54,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 134 transitions, 436 flow. Second operand has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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 11:58:54,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:58:54,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-12 11:58:54,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:58:54,476 INFO L130 PetriNetUnfolder]: 279/874 cut-off events. [2022-12-12 11:58:54,476 INFO L131 PetriNetUnfolder]: For 42/220 co-relation queries the response was YES. [2022-12-12 11:58:54,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 874 events. 279/874 cut-off events. For 42/220 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5825 event pairs, 2 based on Foata normal form. 24/882 useless extension candidates. Maximal degree in co-relation 1914. Up to 131 conditions per place. [2022-12-12 11:58:54,482 INFO L137 encePairwiseOnDemand]: 75/85 looper letters, 32 selfloop transitions, 14 changer transitions 174/271 dead transitions. [2022-12-12 11:58:54,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 271 transitions, 1428 flow [2022-12-12 11:58:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 11:58:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 11:58:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 904 transitions. [2022-12-12 11:58:54,484 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8180995475113122 [2022-12-12 11:58:54,484 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 21 predicate places. [2022-12-12 11:58:54,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 271 transitions, 1428 flow [2022-12-12 11:58:54,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 271 transitions, 1420 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-12 11:58:54,489 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 271 transitions, 1420 flow [2022-12-12 11:58:54,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.0) internal successors, (455), 7 states have internal predecessors, (455), 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 11:58:54,489 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:58:54,489 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] [2022-12-12 11:58:54,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 11:58:54,490 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 11:58:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:58:54,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1585253923, now seen corresponding path program 1 times [2022-12-12 11:58:54,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:58:54,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028922031] [2022-12-12 11:58:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:58:54,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:58:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:58:54,663 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 11:58:54,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:58:54,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028922031] [2022-12-12 11:58:54,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028922031] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:58:54,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:58:54,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 11:58:54,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491051020] [2022-12-12 11:58:54,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:58:54,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 11:58:54,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:58:54,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 11:58:54,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 11:58:54,666 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2022-12-12 11:58:54,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 271 transitions, 1420 flow. Second operand has 7 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 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 11:58:54,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:58:54,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2022-12-12 11:58:54,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:58:54,940 INFO L130 PetriNetUnfolder]: 427/1312 cut-off events. [2022-12-12 11:58:54,940 INFO L131 PetriNetUnfolder]: For 156/813 co-relation queries the response was YES. [2022-12-12 11:58:54,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3763 conditions, 1312 events. 427/1312 cut-off events. For 156/813 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10244 event pairs, 0 based on Foata normal form. 26/1328 useless extension candidates. Maximal degree in co-relation 3726. Up to 204 conditions per place. [2022-12-12 11:58:54,947 INFO L137 encePairwiseOnDemand]: 74/85 looper letters, 38 selfloop transitions, 20 changer transitions 420/529 dead transitions. [2022-12-12 11:58:54,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 529 transitions, 3928 flow [2022-12-12 11:58:54,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 11:58:54,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 11:58:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 900 transitions. [2022-12-12 11:58:54,950 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8144796380090498 [2022-12-12 11:58:54,951 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 33 predicate places. [2022-12-12 11:58:54,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 529 transitions, 3928 flow [2022-12-12 11:58:54,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 529 transitions, 3920 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-12 11:58:54,959 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 529 transitions, 3920 flow [2022-12-12 11:58:54,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 65.28571428571429) internal successors, (457), 7 states have internal predecessors, (457), 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 11:58:54,960 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:58:54,960 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] [2022-12-12 11:58:54,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 11:58:54,960 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 11:58:54,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:58:54,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1279391419, now seen corresponding path program 1 times [2022-12-12 11:58:54,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:58:54,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857926020] [2022-12-12 11:58:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:58:54,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:58:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:58:55,161 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 11:58:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:58:55,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857926020] [2022-12-12 11:58:55,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857926020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:58:55,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:58:55,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-12 11:58:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368690493] [2022-12-12 11:58:55,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:58:55,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 11:58:55,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:58:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 11:58:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-12 11:58:55,163 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 85 [2022-12-12 11:58:55,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 529 transitions, 3920 flow. Second operand has 8 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 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 11:58:55,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:58:55,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 85 [2022-12-12 11:58:55,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:58:55,593 INFO L130 PetriNetUnfolder]: 994/2522 cut-off events. [2022-12-12 11:58:55,593 INFO L131 PetriNetUnfolder]: For 1136/3604 co-relation queries the response was YES. [2022-12-12 11:58:55,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8848 conditions, 2522 events. 994/2522 cut-off events. For 1136/3604 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 20914 event pairs, 0 based on Foata normal form. 66/2570 useless extension candidates. Maximal degree in co-relation 8807. Up to 398 conditions per place. [2022-12-12 11:58:55,644 INFO L137 encePairwiseOnDemand]: 73/85 looper letters, 34 selfloop transitions, 12 changer transitions 890/985 dead transitions. [2022-12-12 11:58:55,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 985 transitions, 9436 flow [2022-12-12 11:58:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 11:58:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 11:58:55,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1140 transitions. [2022-12-12 11:58:55,650 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7889273356401384 [2022-12-12 11:58:55,651 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 49 predicate places. [2022-12-12 11:58:55,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 985 transitions, 9436 flow [2022-12-12 11:58:55,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 985 transitions, 9004 flow, removed 216 selfloop flow, removed 0 redundant places. [2022-12-12 11:58:55,664 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 985 transitions, 9004 flow [2022-12-12 11:58:55,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 63.125) internal successors, (505), 8 states have internal predecessors, (505), 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 11:58:55,664 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:58:55,664 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 11:58:55,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 11:58:55,664 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 11:58:55,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:58:55,665 INFO L85 PathProgramCache]: Analyzing trace with hash -765149618, now seen corresponding path program 1 times [2022-12-12 11:58:55,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:58:55,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803114239] [2022-12-12 11:58:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:58:55,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:58:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:58:55,780 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 11:58:55,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:58:55,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803114239] [2022-12-12 11:58:55,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803114239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:58:55,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:58:55,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 11:58:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824013502] [2022-12-12 11:58:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:58:55,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 11:58:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:58:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 11:58:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 11:58:55,783 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 85 [2022-12-12 11:58:55,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 985 transitions, 9004 flow. Second operand has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 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 11:58:55,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:58:55,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 85 [2022-12-12 11:58:55,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:58:56,240 INFO L130 PetriNetUnfolder]: 1150/3154 cut-off events. [2022-12-12 11:58:56,240 INFO L131 PetriNetUnfolder]: For 3011/6527 co-relation queries the response was YES. [2022-12-12 11:58:56,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11984 conditions, 3154 events. 1150/3154 cut-off events. For 3011/6527 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 28828 event pairs, 0 based on Foata normal form. 75/3218 useless extension candidates. Maximal degree in co-relation 11942. Up to 514 conditions per place. [2022-12-12 11:58:56,251 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 17 selfloop transitions, 4 changer transitions 1156/1231 dead transitions. [2022-12-12 11:58:56,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 1231 transitions, 13566 flow [2022-12-12 11:58:56,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 11:58:56,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 11:58:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 922 transitions. [2022-12-12 11:58:56,253 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8343891402714932 [2022-12-12 11:58:56,254 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 61 predicate places. [2022-12-12 11:58:56,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 1231 transitions, 13566 flow [2022-12-12 11:58:56,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 1231 transitions, 13018 flow, removed 106 selfloop flow, removed 3 redundant places. [2022-12-12 11:58:56,272 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 1231 transitions, 13018 flow [2022-12-12 11:58:56,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 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 11:58:56,273 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 11:58:56,273 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 11:58:56,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 11:58:56,273 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 11:58:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 11:58:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash 534543226, now seen corresponding path program 1 times [2022-12-12 11:58:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 11:58:56,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961648133] [2022-12-12 11:58:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 11:58:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 11:58:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 11:58:56,380 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 11:58:56,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 11:58:56,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961648133] [2022-12-12 11:58:56,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961648133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 11:58:56,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 11:58:56,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 11:58:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013751499] [2022-12-12 11:58:56,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 11:58:56,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 11:58:56,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 11:58:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 11:58:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-12 11:58:56,383 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 85 [2022-12-12 11:58:56,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 1231 transitions, 13018 flow. Second operand has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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 11:58:56,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 11:58:56,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 85 [2022-12-12 11:58:56,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 11:58:56,920 INFO L130 PetriNetUnfolder]: 1284/3750 cut-off events. [2022-12-12 11:58:56,920 INFO L131 PetriNetUnfolder]: For 4646/10604 co-relation queries the response was YES. [2022-12-12 11:58:56,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15573 conditions, 3750 events. 1284/3750 cut-off events. For 4646/10604 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 37087 event pairs, 0 based on Foata normal form. 167/3895 useless extension candidates. Maximal degree in co-relation 15528. Up to 606 conditions per place. [2022-12-12 11:58:56,933 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 0 selfloop transitions, 0 changer transitions 1432/1432 dead transitions. [2022-12-12 11:58:56,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 1432 transitions, 18036 flow [2022-12-12 11:58:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-12 11:58:56,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-12 11:58:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 926 transitions. [2022-12-12 11:58:56,936 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8380090497737557 [2022-12-12 11:58:56,938 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 68 predicate places. [2022-12-12 11:58:56,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 1432 transitions, 18036 flow [2022-12-12 11:58:56,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 1432 transitions, 17183 flow, removed 126 selfloop flow, removed 5 redundant places. [2022-12-12 11:58:56,963 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 1432 transitions, 17183 flow [2022-12-12 11:58:56,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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 11:58:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 11:58:56,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 11:58:56,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 11:58:56,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 11:58:56,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 11:58:56,966 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-12 11:58:56,969 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 11:58:56,969 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 11:58:56,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 11:58:56 BasicIcfg [2022-12-12 11:58:56,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 11:58:56,976 INFO L158 Benchmark]: Toolchain (without parser) took 5086.14ms. Allocated memory was 165.7MB in the beginning and 282.1MB in the end (delta: 116.4MB). Free memory was 140.5MB in the beginning and 165.2MB in the end (delta: -24.7MB). Peak memory consumption was 93.8MB. Max. memory is 8.0GB. [2022-12-12 11:58:56,977 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 11:58:56,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.47ms. Allocated memory is still 165.7MB. Free memory was 139.9MB in the beginning and 116.4MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-12 11:58:56,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.53ms. Allocated memory is still 165.7MB. Free memory was 116.4MB in the beginning and 114.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 11:58:56,980 INFO L158 Benchmark]: Boogie Preprocessor took 33.61ms. Allocated memory is still 165.7MB. Free memory was 114.3MB in the beginning and 112.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 11:58:56,980 INFO L158 Benchmark]: RCFGBuilder took 411.24ms. Allocated memory is still 165.7MB. Free memory was 112.7MB in the beginning and 99.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 11:58:56,980 INFO L158 Benchmark]: TraceAbstraction took 4222.87ms. Allocated memory was 165.7MB in the beginning and 282.1MB in the end (delta: 116.4MB). Free memory was 98.0MB in the beginning and 165.2MB in the end (delta: -67.2MB). Peak memory consumption was 49.7MB. Max. memory is 8.0GB. [2022-12-12 11:58:56,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 368.47ms. Allocated memory is still 165.7MB. Free memory was 139.9MB in the beginning and 116.4MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.53ms. Allocated memory is still 165.7MB. Free memory was 116.4MB in the beginning and 114.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.61ms. Allocated memory is still 165.7MB. Free memory was 114.3MB in the beginning and 112.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 411.24ms. Allocated memory is still 165.7MB. Free memory was 112.7MB in the beginning and 99.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4222.87ms. Allocated memory was 165.7MB in the beginning and 282.1MB in the end (delta: 116.4MB). Free memory was 98.0MB in the beginning and 165.2MB in the end (delta: -67.2MB). Peak memory consumption was 49.7MB. 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: 4.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 443 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 443 mSDsluCounter, 526 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 391 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 442 IncrementalHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 135 mSDtfsCounter, 442 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17183occurred in iteration=6, InterpolantAutomatonStates: 82, 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, 1865 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 329 NumberOfCodeBlocks, 329 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 1853 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 11:58:56,999 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...